Add latest changes from gitlab-org/gitlab@master

93 files changed, 1326 insertions, 1728 deletions

diff --git a/app/assets/javascripts/contributors/components/contributors.vue b/app/assets/javascripts/contributors/components/contributors.vue
new file mode 100644
index 00000000000..7dd6b051cb4
--- /dev/null
+++ b/app/assets/javascripts/contributors/components/contributors.vue
@@ -0,0 +1,227 @@
+<script>
+import { __ } from '~/locale';
+import _ from 'underscore';
+import { mapActions, mapState, mapGetters } from 'vuex';
+import { GlLoadingIcon } from '@gitlab/ui';
+import { GlAreaChart } from '@gitlab/ui/dist/charts';
+import { getSvgIconPathContent } from '~/lib/utils/icon_utils';
+import { getDatesInRange } from '~/lib/utils/datetime_utility';
+import { xAxisLabelFormatter, dateFormatter } from '../utils';
+
+export default {
+  components: {
+    GlAreaChart,
+    GlLoadingIcon,
+  },
+  props: {
+    endpoint: {
+      type: String,
+      required: true,
+    },
+    branch: {
+      type: String,
+      required: true,
+    },
+  },
+  data() {
+    return {
+      masterChart: null,
+      individualCharts: [],
+      svgs: {},
+      masterChartHeight: 264,
+      individualChartHeight: 216,
+    };
+  },
+  computed: {
+    ...mapState(['chartData', 'loading']),
+    ...mapGetters(['showChart', 'parsedData']),
+    masterChartData() {
+      const data = {};
+      this.xAxisRange.forEach(date => {
+        data[date] = this.parsedData.total[date] || 0;
+      });
+      return [
+        {
+          name: __('Commits'),
+          data: Object.entries(data),
+        },
+      ];
+    },
+    masterChartOptions() {
+      return {
+        ...this.getCommonChartOptions(true),
+        yAxis: {
+          name: __('Number of commits'),
+        },
+        grid: {
+          bottom: 64,
+          left: 64,
+          right: 20,
+          top: 20,
+        },
+      };
+    },
+    individualChartsData() {
+      const maxNumberOfIndividualContributorsCharts = 100;
+
+      return Object.keys(this.parsedData.byAuthor)
+        .map(name => {
+          const author = this.parsedData.byAuthor[name];
+          return {
+            name,
+            email: author.email,
+            commits: author.commits,
+            dates: [
+              {
+                name: __('Commits'),
+                data: this.xAxisRange.map(date => [date, author.dates[date] || 0]),
+              },
+            ],
+          };
+        })
+        .sort((a, b) => b.commits - a.commits)
+        .slice(0, maxNumberOfIndividualContributorsCharts);
+    },
+    individualChartOptions() {
+      return {
+        ...this.getCommonChartOptions(false),
+        yAxis: {
+          name: __('Commits'),
+          max: this.individualChartYAxisMax,
+        },
+        grid: {
+          bottom: 27,
+          left: 64,
+          right: 20,
+          top: 8,
+        },
+      };
+    },
+    individualChartYAxisMax() {
+      return this.individualChartsData.reduce((acc, item) => {
+        const values = item.dates[0].data.map(value => value[1]);
+        return Math.max(acc, ...values);
+      }, 0);
+    },
+    xAxisRange() {
+      const dates = Object.keys(this.parsedData.total).sort((a, b) => new Date(a) - new Date(b));
+
+      const firstContributionDate = new Date(dates[0]);
+      const lastContributionDate = new Date(dates[dates.length - 1]);
+
+      return getDatesInRange(firstContributionDate, lastContributionDate, dateFormatter);
+    },
+    firstContributionDate() {
+      return this.xAxisRange[0];
+    },
+    lastContributionDate() {
+      return this.xAxisRange[this.xAxisRange.length - 1];
+    },
+    charts() {
+      return _.uniq(this.individualCharts);
+    },
+  },
+  mounted() {
+    this.fetchChartData(this.endpoint);
+  },
+  methods: {
+    ...mapActions(['fetchChartData']),
+    getCommonChartOptions(isMasterChart) {
+      return {
+        xAxis: {
+          type: 'time',
+          name: '',
+          data: this.xAxisRange,
+          axisLabel: {
+            formatter: xAxisLabelFormatter,
+            showMaxLabel: false,
+            showMinLabel: false,
+          },
+          boundaryGap: false,
+          splitNumber: isMasterChart ? 24 : 18,
+          // 28 days
+          minInterval: 28 * 86400 * 1000,
+          min: this.firstContributionDate,
+          max: this.lastContributionDate,
+        },
+      };
+    },
+    setSvg(name) {
+      return getSvgIconPathContent(name)
+        .then(path => {
+          if (path) {
+            this.$set(this.svgs, name, `path://${path}`);
+          }
+        })
+        .catch(() => {});
+    },
+    onMasterChartCreated(chart) {
+      this.masterChart = chart;
+      this.setSvg('scroll-handle')
+        .then(() => {
+          this.masterChart.setOption({
+            dataZoom: [
+              {
+                type: 'slider',
+                handleIcon: this.svgs['scroll-handle'],
+              },
+            ],
+          });
+        })
+        .catch(() => {});
+      this.masterChart.on('datazoom', _.debounce(this.setIndividualChartsZoom, 200));
+    },
+    onIndividualChartCreated(chart) {
+      this.individualCharts.push(chart);
+    },
+    setIndividualChartsZoom(options) {
+      this.charts.forEach(chart =>
+        chart.setOption(
+          {
+            dataZoom: {
+              start: options.start,
+              end: options.end,
+              show: false,
+            },
+          },
+          { lazyUpdate: true },
+        ),
+      );
+    },
+  },
+};
+</script>
+
+<template>
+  <div>
+    <div v-if="loading" class="contributors-loader text-center">
+      <gl-loading-icon :inline="true" :size="4" />
+    </div>
+
+    <div v-else-if="showChart" class="contributors-charts">
+      <h4>{{ __('Commits to') }} {{ branch }}</h4>
+      <span>{{ __('Excluding merge commits. Limited to 6,000 commits.') }}</span>
+      <div>
+        <gl-area-chart
+          :data="masterChartData"
+          :option="masterChartOptions"
+          :height="masterChartHeight"
+          @created="onMasterChartCreated"
+        />
+      </div>
+
+      <div class="row">
+        <div v-for="contributor in individualChartsData" :key="contributor.name" class="col-6">
+          <h4>{{ contributor.name }}</h4>
+          <p>{{ n__('%d commit', '%d commits', contributor.commits) }} ({{ contributor.email }})</p>
+          <gl-area-chart
+            :data="contributor.dates"
+            :option="individualChartOptions"
+            :height="individualChartHeight"
+            @created="onIndividualChartCreated"
+          />
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
diff --git a/app/assets/javascripts/contributors/index.js b/app/assets/javascripts/contributors/index.js
new file mode 100644
index 00000000000..b6063589734
--- /dev/null
+++ b/app/assets/javascripts/contributors/index.js
@@ -0,0 +1,23 @@
+import Vue from 'vue';
+import ContributorsGraphs from './components/contributors.vue';
+import store from './stores';
+
+export default () => {
+  const el = document.querySelector('.js-contributors-graph');
+
+  if (!el) return null;
+
+  return new Vue({
+    el,
+    store,
+
+    render(createElement) {
+      return createElement(ContributorsGraphs, {
+        props: {
+          endpoint: el.dataset.projectGraphPath,
+          branch: el.dataset.projectBranch,
+        },
+      });
+    },
+  });
+};
diff --git a/app/assets/javascripts/contributors/services/contributors_service.js b/app/assets/javascripts/contributors/services/contributors_service.js
new file mode 100644
index 00000000000..5a8bbb66511
--- /dev/null
+++ b/app/assets/javascripts/contributors/services/contributors_service.js
@@ -0,0 +1,7 @@
+import axios from '~/lib/utils/axios_utils';
+
+export default {
+  fetchChartData(endpoint) {
+    return axios.get(endpoint);
+  },
+};
diff --git a/app/assets/javascripts/contributors/stores/actions.js b/app/assets/javascripts/contributors/stores/actions.js
new file mode 100644
index 00000000000..4138ff24f1d
--- /dev/null
+++ b/app/assets/javascripts/contributors/stores/actions.js
@@ -0,0 +1,20 @@
+import flash from '~/flash';
+import { __ } from '~/locale';
+import service from '../services/contributors_service';
+import * as types from './mutation_types';
+
+export const fetchChartData = ({ commit }, endpoint) => {
+  commit(types.SET_LOADING_STATE, true);
+
+  return service
+    .fetchChartData(endpoint)
+    .then(res => res.data)
+    .then(data => {
+      commit(types.SET_CHART_DATA, data);
+      commit(types.SET_LOADING_STATE, false);
+    })
+    .catch(() => flash(__('An error occurred while loading chart data')));
+};
+
+// prevent babel-plugin-rewire from generating an invalid default during karma tests
+export default () => {};
diff --git a/app/assets/javascripts/contributors/stores/getters.js b/app/assets/javascripts/contributors/stores/getters.js
new file mode 100644
index 00000000000..9e02e3ed9e7
--- /dev/null
+++ b/app/assets/javascripts/contributors/stores/getters.js
@@ -0,0 +1,33 @@
+export const showChart = state => Boolean(!state.loading && state.chartData);
+
+export const parsedData = state => {
+  const byAuthor = {};
+  const total = {};
+
+  state.chartData.forEach(({ date, author_name, author_email }) => {
+    total[date] = total[date] ? total[date] + 1 : 1;
+
+    const authorData = byAuthor[author_name];
+
+    if (!authorData) {
+      byAuthor[author_name] = {
+        email: author_email.toLowerCase(),
+        commits: 1,
+        dates: {
+          [date]: 1,
+        },
+      };
+    } else {
+      authorData.commits += 1;
+      authorData.dates[date] = authorData.dates[date] ? authorData.dates[date] + 1 : 1;
+    }
+  });
+
+  return {
+    total,
+    byAuthor,
+  };
+};
+
+// prevent babel-plugin-rewire from generating an invalid default during karma tests
+export default () => {};
diff --git a/app/assets/javascripts/contributors/stores/index.js b/app/assets/javascripts/contributors/stores/index.js
new file mode 100644
index 00000000000..bc739851aa7
--- /dev/null
+++ b/app/assets/javascripts/contributors/stores/index.js
@@ -0,0 +1,18 @@
+import Vue from 'vue';
+import Vuex from 'vuex';
+import state from './state';
+import mutations from './mutations';
+import * as getters from './getters';
+import * as actions from './actions';
+
+Vue.use(Vuex);
+
+export const createStore = () =>
+  new Vuex.Store({
+    actions,
+    mutations,
+    getters,
+    state: state(),
+  });
+
+export default createStore();
diff --git a/app/assets/javascripts/contributors/stores/mutation_types.js b/app/assets/javascripts/contributors/stores/mutation_types.js
new file mode 100644
index 00000000000..62e0a51d5f8
--- /dev/null
+++ b/app/assets/javascripts/contributors/stores/mutation_types.js
@@ -0,0 +1,3 @@
+export const SET_CHART_DATA = 'SET_CHART_DATA';
+export const SET_LOADING_STATE = 'SET_LOADING_STATE';
+export const SET_ACTIVE_BRANCH = 'SET_ACTIVE_BRANCH';
diff --git a/app/assets/javascripts/contributors/stores/mutations.js b/app/assets/javascripts/contributors/stores/mutations.js
new file mode 100644
index 00000000000..f1f460d072d
--- /dev/null
+++ b/app/assets/javascripts/contributors/stores/mutations.js
@@ -0,0 +1,17 @@
+import * as types from './mutation_types';
+
+export default {
+  [types.SET_LOADING_STATE](state, value) {
+    state.loading = value;
+  },
+  [types.SET_CHART_DATA](state, chartData) {
+    Object.assign(state, {
+      chartData,
+    });
+  },
+  [types.SET_ACTIVE_BRANCH](state, branch) {
+    Object.assign(state, {
+      branch,
+    });
+  },
+};
diff --git a/app/assets/javascripts/contributors/stores/state.js b/app/assets/javascripts/contributors/stores/state.js
new file mode 100644
index 00000000000..1dc1a3c7b75
--- /dev/null
+++ b/app/assets/javascripts/contributors/stores/state.js
@@ -0,0 +1,5 @@
+export default () => ({
+  loading: false,
+  chartData: null,
+  branch: 'master',
+});
diff --git a/app/assets/javascripts/contributors/utils.js b/app/assets/javascripts/contributors/utils.js
new file mode 100644
index 00000000000..7d8932ce495
--- /dev/null
+++ b/app/assets/javascripts/contributors/utils.js
@@ -0,0 +1,30 @@
+import { getMonthNames } from '~/lib/utils/datetime_utility';
+
+/**
+ * Converts provided string to date and returns formatted value as a year for date in January and month name for the rest
+ * @param {String}
+ * @returns {String}  - formatted value
+ *
+ * xAxisLabelFormatter('01-12-2019') will return '2019'
+ * xAxisLabelFormatter('02-12-2019') will return 'Feb'
+ * xAxisLabelFormatter('07-12-2019') will return 'Jul'
+ */
+export const xAxisLabelFormatter = val => {
+  const date = new Date(val);
+  const month = date.getUTCMonth();
+  const year = date.getUTCFullYear();
+  return month === 0 ? `${year}` : getMonthNames(true)[month];
+};
+
+/**
+ * Formats provided date to YYYY-MM-DD format
+ * @param {Date}
+ * @returns {String}  - formatted value
+ */
+export const dateFormatter = date => {
+  const year = date.getUTCFullYear();
+  const month = date.getUTCMonth();
+  const day = date.getUTCDate();
+
+  return `${year}-${`0${month + 1}`.slice(-2)}-${`0${day}`.slice(-2)}`;
+};
diff --git a/app/assets/javascripts/lib/utils/datetime_utility.js b/app/assets/javascripts/lib/utils/datetime_utility.js
index 37b0215f6f9..e2d188103bc 100644
--- a/app/assets/javascripts/lib/utils/datetime_utility.js
+++ b/app/assets/javascripts/lib/utils/datetime_utility.js
@@ -564,3 +564,26 @@ export const getDateInPast = (date, daysInPast) => {
 
 export const beginOfDayTime = 'T00:00:00Z';
 export const endOfDayTime = 'T23:59:59Z';
+
+/**
+ * @param {Date} d1
+ * @param {Date} d2
+ * @param {Function} formatter
+ * @return {Any[]} an array of formatted dates between 2 given dates (including start&end date)
+ */
+export const getDatesInRange = (d1, d2, formatter = x => x) => {
+  if (!(d1 instanceof Date) || !(d2 instanceof Date)) {
+    return [];
+  }
+  let startDate = d1.getTime();
+  const endDate = d2.getTime();
+  const oneDay = 24 * 3600 * 1000;
+  const range = [d1];
+
+  while (startDate < endDate) {
+    startDate += oneDay;
+    range.push(new Date(startDate));
+  }
+
+  return range.map(formatter);
+};
diff --git a/app/assets/javascripts/pages/projects/graphs/show/index.js b/app/assets/javascripts/pages/projects/graphs/show/index.js
index f79c386b59e..09d9c78c446 100644
--- a/app/assets/javascripts/pages/projects/graphs/show/index.js
+++ b/app/assets/javascripts/pages/projects/graphs/show/index.js
@@ -1,25 +1,3 @@
-import $ from 'jquery';
-import flash from '~/flash';
-import { __ } from '~/locale';
-import axios from '~/lib/utils/axios_utils';
-import ContributorsStatGraph from './stat_graph_contributors';
+import initContributorsGraphs from '~/contributors';
 
-document.addEventListener('DOMContentLoaded', () => {
-  const url = document.querySelector('.js-graphs-show').dataset.projectGraphPath;
-
-  axios
-    .get(url)
-    .then(({ data }) => {
-      const graph = new ContributorsStatGraph();
-      graph.init(data);
-
-      $('#brush_change').change(() => {
-        graph.change_date_header();
-        graph.redraw_authors();
-      });
-
-      $('.stat-graph').fadeIn();
-      $('.loading-graph').hide();
-    })
-    .catch(() => flash(__('Error fetching contributors data.')));
-});
+document.addEventListener('DOMContentLoaded', initContributorsGraphs);
diff --git a/app/assets/javascripts/pages/projects/graphs/show/stat_graph_contributors.js b/app/assets/javascripts/pages/projects/graphs/show/stat_graph_contributors.js
deleted file mode 100644
index 5b873e6b909..00000000000
--- a/app/assets/javascripts/pages/projects/graphs/show/stat_graph_contributors.js
+++ /dev/null
@@ -1,140 +0,0 @@
-/* eslint-disable func-names, no-var, one-var, camelcase, no-param-reassign, no-return-assign */
-
-import $ from 'jquery';
-import _ from 'underscore';
-import { n__, s__, createDateTimeFormat, sprintf } from '~/locale';
-import {
-  ContributorsGraph,
-  ContributorsAuthorGraph,
-  ContributorsMasterGraph,
-} from './stat_graph_contributors_graph';
-import ContributorsStatGraphUtil from './stat_graph_contributors_util';
-
-export default (function() {
-  function ContributorsStatGraph() {
-    this.dateFormat = createDateTimeFormat({ year: 'numeric', month: 'long', day: 'numeric' });
-  }
-
-  ContributorsStatGraph.prototype.init = function(log) {
-    var author_commits, total_commits;
-    this.parsed_log = ContributorsStatGraphUtil.parse_log(log);
-    this.set_current_field('commits');
-    total_commits = ContributorsStatGraphUtil.get_total_data(this.parsed_log, this.field);
-    author_commits = ContributorsStatGraphUtil.get_author_data(this.parsed_log, this.field);
-    this.add_master_graph(total_commits);
-    this.add_authors_graph(author_commits);
-    return this.change_date_header();
-  };
-
-  ContributorsStatGraph.prototype.add_master_graph = function(total_data) {
-    this.master_graph = new ContributorsMasterGraph(total_data);
-    return this.master_graph.draw();
-  };
-
-  ContributorsStatGraph.prototype.add_authors_graph = function(author_data) {
-    var limited_author_data;
-    this.authors = [];
-    limited_author_data = author_data.slice(0, 100);
-    return _.each(
-      limited_author_data,
-      (function(_this) {
-        return function(d) {
-          var author_graph, author_header;
-          author_header = _this.create_author_header(d);
-          $('.contributors-list').append(author_header);
-
-          author_graph = new ContributorsAuthorGraph(d.dates);
-          _this.authors[d.author_name] = author_graph;
-          return author_graph.draw();
-        };
-      })(this),
-    );
-  };
-
-  ContributorsStatGraph.prototype.format_author_commit_info = function(author) {
-    var commits;
-    commits = $('<span/>', {
-      class: 'graph-author-commits-count',
-    });
-    commits.text(n__('%d commit', '%d commits', author.commits));
-    return $('<span/>').append(commits);
-  };
-
-  ContributorsStatGraph.prototype.create_author_header = function(author) {
-    var author_commit_info, author_commit_info_span, author_email, author_name, list_item;
-    list_item = $('<li/>', {
-      class: 'person',
-      style: 'display: block;',
-    });
-    author_name = $(`<h4>${author.author_name}</h4>`);
-    author_email = $(`<p class="graph-author-email">${author.author_email}</p>`);
-    author_commit_info_span = $('<span/>', {
-      class: 'commits',
-    });
-    author_commit_info = this.format_author_commit_info(author);
-    author_commit_info_span.html(author_commit_info);
-    list_item.append(author_name);
-    list_item.append(author_email);
-    list_item.append(author_commit_info_span);
-    return list_item;
-  };
-
-  ContributorsStatGraph.prototype.redraw_master = function() {
-    var total_data;
-    total_data = ContributorsStatGraphUtil.get_total_data(this.parsed_log, this.field);
-    this.master_graph.set_data(total_data);
-    return this.master_graph.redraw();
-  };
-
-  ContributorsStatGraph.prototype.redraw_authors = function() {
-    $('ol').html('');
-
-    const { x_domain } = ContributorsGraph.prototype;
-    const author_commits = ContributorsStatGraphUtil.get_author_data(
-      this.parsed_log,
-      this.field,
-      x_domain,
-    );
-
-    return _.each(
-      author_commits,
-      (function(_this) {
-        return function(d) {
-          _this.redraw_author_commit_info(d);
-          if (_this.authors[d.author_name] != null) {
-            $(_this.authors[d.author_name].list_item).appendTo('ol');
-            _this.authors[d.author_name].set_data(d.dates);
-            return _this.authors[d.author_name].redraw();
-          }
-          return '';
-        };
-      })(this),
-    );
-  };
-
-  ContributorsStatGraph.prototype.set_current_field = function(field) {
-    return (this.field = field);
-  };
-
-  ContributorsStatGraph.prototype.change_date_header = function() {
-    const { x_domain } = ContributorsGraph.prototype;
-    const formattedDateRange = sprintf(s__('ContributorsPage|%{startDate} – %{endDate}'), {
-      startDate: this.dateFormat.format(new Date(x_domain[0])),
-      endDate: this.dateFormat.format(new Date(x_domain[1])),
-    });
-    return $('#date_header').text(formattedDateRange);
-  };
-
-  ContributorsStatGraph.prototype.redraw_author_commit_info = function(author) {
-    var author_commit_info, author_list_item, $author;
-    $author = this.authors[author.author_name];
-    if ($author != null) {
-      author_list_item = $(this.authors[author.author_name].list_item);
-      author_commit_info = this.format_author_commit_info(author);
-      return author_list_item.find('span').html(author_commit_info);
-    }
-    return '';
-  };
-
-  return ContributorsStatGraph;
-})();
diff --git a/app/assets/javascripts/pages/projects/graphs/show/stat_graph_contributors_graph.js b/app/assets/javascripts/pages/projects/graphs/show/stat_graph_contributors_graph.js
deleted file mode 100644
index 86794800f87..00000000000
--- a/app/assets/javascripts/pages/projects/graphs/show/stat_graph_contributors_graph.js
+++ /dev/null
@@ -1,379 +0,0 @@
-/* eslint-disable func-names, no-restricted-syntax, no-use-before-define, no-param-reassign, new-cap, no-underscore-dangle, no-return-assign, no-else-return, no-shadow */
-
-import $ from 'jquery';
-import _ from 'underscore';
-import { extent, max } from 'd3-array';
-import { select, event as d3Event } from 'd3-selection';
-import { scaleTime, scaleLinear } from 'd3-scale';
-import { axisLeft, axisBottom } from 'd3-axis';
-import { area } from 'd3-shape';
-import { brushX } from 'd3-brush';
-import { timeParse } from 'd3-time-format';
-import { dateTickFormat } from '~/lib/utils/tick_formats';
-
-const d3 = {
-  extent,
-  max,
-  select,
-  scaleTime,
-  scaleLinear,
-  axisLeft,
-  axisBottom,
-  area,
-  brushX,
-  timeParse,
-};
-
-const hasProp = {}.hasOwnProperty;
-const extend = function(child, parent) {
-  for (const key in parent) {
-    if (hasProp.call(parent, key)) child[key] = parent[key];
-  }
-  function ctor() {
-    this.constructor = child;
-  }
-  ctor.prototype = parent.prototype;
-  child.prototype = new ctor();
-  child.__super__ = parent.prototype;
-  return child;
-};
-
-export const ContributorsGraph = (function() {
-  function ContributorsGraph() {}
-
-  ContributorsGraph.prototype.MARGIN = {
-    top: 20,
-    right: 10,
-    bottom: 30,
-    left: 40,
-  };
-
-  ContributorsGraph.prototype.x_domain = null;
-
-  ContributorsGraph.prototype.y_domain = null;
-
-  ContributorsGraph.prototype.dates = [];
-
-  ContributorsGraph.prototype.determine_width = function(baseWidth, $parentElement) {
-    const parentPaddingWidth =
-      parseFloat($parentElement.css('padding-left')) +
-      parseFloat($parentElement.css('padding-right'));
-    const marginWidth = this.MARGIN.left + this.MARGIN.right;
-    return baseWidth - parentPaddingWidth - marginWidth;
-  };
-
-  ContributorsGraph.set_x_domain = function(data) {
-    return (ContributorsGraph.prototype.x_domain = data);
-  };
-
-  ContributorsGraph.set_y_domain = function(data) {
-    return (ContributorsGraph.prototype.y_domain = [
-      0,
-      d3.max(data, d => (d.commits = d.commits || d.additions || d.deletions)),
-    ]);
-  };
-
-  ContributorsGraph.init_x_domain = function(data) {
-    return (ContributorsGraph.prototype.x_domain = d3.extent(data, d => d.date));
-  };
-
-  ContributorsGraph.init_y_domain = function(data) {
-    return (ContributorsGraph.prototype.y_domain = [
-      0,
-      d3.max(data, d => (d.commits = d.commits || d.additions || d.deletions)),
-    ]);
-  };
-
-  ContributorsGraph.init_domain = function(data) {
-    ContributorsGraph.init_x_domain(data);
-    return ContributorsGraph.init_y_domain(data);
-  };
-
-  ContributorsGraph.set_dates = function(data) {
-    return (ContributorsGraph.prototype.dates = data);
-  };
-
-  ContributorsGraph.prototype.set_x_domain = function() {
-    return this.x.domain(this.x_domain);
-  };
-
-  ContributorsGraph.prototype.set_y_domain = function() {
-    return this.y.domain(this.y_domain);
-  };
-
-  ContributorsGraph.prototype.set_domain = function() {
-    this.set_x_domain();
-    return this.set_y_domain();
-  };
-
-  ContributorsGraph.prototype.create_scale = function(width, height) {
-    this.x = d3
-      .scaleTime()
-      .range([0, width])
-      .clamp(true);
-    return (this.y = d3
-      .scaleLinear()
-      .range([height, 0])
-      .nice());
-  };
-
-  ContributorsGraph.prototype.draw_x_axis = function() {
-    return this.svg
-      .append('g')
-      .attr('class', 'x axis')
-      .attr('transform', `translate(0, ${this.height})`)
-      .call(this.x_axis);
-  };
-
-  ContributorsGraph.prototype.draw_y_axis = function() {
-    return this.svg
-      .append('g')
-      .attr('class', 'y axis')
-      .call(this.y_axis);
-  };
-
-  ContributorsGraph.prototype.set_data = function(data) {
-    return (this.data = data);
-  };
-
-  return ContributorsGraph;
-})();
-
-export const ContributorsMasterGraph = (function(superClass) {
-  extend(ContributorsMasterGraph, superClass);
-
-  function ContributorsMasterGraph(data1) {
-    const $parentElement = $('#contributors-master');
-
-    this.data = data1;
-    this.update_content = this.update_content.bind(this);
-    this.width = this.determine_width($('.js-graphs-show').width(), $parentElement);
-    this.height = 200;
-    this.x = null;
-    this.y = null;
-    this.x_axis = null;
-    this.y_axis = null;
-    this.area = null;
-    this.svg = null;
-    this.brush = null;
-    this.x_max_domain = null;
-  }
-
-  ContributorsMasterGraph.prototype.process_dates = function(data) {
-    const dates = this.get_dates(data);
-    this.parse_dates(data);
-    return ContributorsGraph.set_dates(dates);
-  };
-
-  ContributorsMasterGraph.prototype.get_dates = function(data) {
-    return _.pluck(data, 'date');
-  };
-
-  ContributorsMasterGraph.prototype.parse_dates = function(data) {
-    const parseDate = d3.timeParse('%Y-%m-%d');
-    return data.forEach(d => (d.date = parseDate(d.date)));
-  };
-
-  ContributorsMasterGraph.prototype.create_scale = function() {
-    return ContributorsMasterGraph.__super__.create_scale.call(this, this.width, this.height);
-  };
-
-  ContributorsMasterGraph.prototype.create_axes = function() {
-    this.x_axis = d3
-      .axisBottom()
-      .scale(this.x)
-      .tickFormat(dateTickFormat);
-    return (this.y_axis = d3
-      .axisLeft()
-      .scale(this.y)
-      .ticks(5));
-  };
-
-  ContributorsMasterGraph.prototype.create_svg = function() {
-    this.svg = d3
-      .select('#contributors-master')
-      .append('svg')
-      .attr('width', this.width + this.MARGIN.left + this.MARGIN.right)
-      .attr('height', this.height + this.MARGIN.top + this.MARGIN.bottom)
-      .attr('class', 'tint-box')
-      .append('g')
-      .attr('transform', `translate(${this.MARGIN.left},${this.MARGIN.top})`);
-    return this.svg;
-  };
-
-  ContributorsMasterGraph.prototype.create_area = function(x, y) {
-    return (this.area = d3
-      .area()
-      .x(d => x(d.date))
-      .y0(this.height)
-      .y1(d => {
-        d.commits = d.commits || d.additions || d.deletions;
-        return y(d.commits);
-      }));
-  };
-
-  ContributorsMasterGraph.prototype.create_brush = function() {
-    return (this.brush = d3
-      .brushX(this.x)
-      .extent([[this.x.range()[0], 0], [this.x.range()[1], this.height]])
-      .on('end', this.update_content));
-  };
-
-  ContributorsMasterGraph.prototype.draw_path = function(data) {
-    return this.svg
-      .append('path')
-      .datum(data)
-      .attr('class', 'area')
-      .attr('d', this.area);
-  };
-
-  ContributorsMasterGraph.prototype.add_brush = function() {
-    return this.svg
-      .append('g')
-      .attr('class', 'selection')
-      .call(this.brush)
-      .selectAll('rect')
-      .attr('height', this.height);
-  };
-
-  ContributorsMasterGraph.prototype.update_content = function() {
-    // d3Event.selection replaces the function brush.empty() calls
-    if (d3Event.selection != null) {
-      ContributorsGraph.set_x_domain(d3Event.selection.map(this.x.invert));
-    } else {
-      ContributorsGraph.set_x_domain(this.x_max_domain);
-    }
-    return $('#brush_change').trigger('change');
-  };
-
-  ContributorsMasterGraph.prototype.draw = function() {
-    this.process_dates(this.data);
-    this.create_scale();
-    this.create_axes();
-    ContributorsGraph.init_domain(this.data);
-    this.x_max_domain = this.x_domain;
-    this.set_domain();
-    this.create_area(this.x, this.y);
-    this.create_svg();
-    this.create_brush();
-    this.draw_path(this.data);
-    this.draw_x_axis();
-    this.draw_y_axis();
-    return this.add_brush();
-  };
-
-  ContributorsMasterGraph.prototype.redraw = function() {
-    this.process_dates(this.data);
-    ContributorsGraph.set_y_domain(this.data);
-    this.set_y_domain();
-    this.svg.select('path').datum(this.data);
-    this.svg.select('path').attr('d', this.area);
-    return this.svg.select('.y.axis').call(this.y_axis);
-  };
-
-  return ContributorsMasterGraph;
-})(ContributorsGraph);
-
-export const ContributorsAuthorGraph = (function(superClass) {
-  extend(ContributorsAuthorGraph, superClass);
-
-  function ContributorsAuthorGraph(data1) {
-    const $parentElements = $('.person');
-
-    this.data = data1;
-    // Don't split graph size in half for mobile devices.
-    if ($(window).width() < 790) {
-      this.width = this.determine_width($('.js-graphs-show').width(), $parentElements);
-    } else {
-      this.width = this.determine_width($('.js-graphs-show').width() / 2, $parentElements);
-    }
-    this.height = 200;
-    this.x = null;
-    this.y = null;
-    this.x_axis = null;
-    this.y_axis = null;
-    this.area = null;
-    this.svg = null;
-    this.list_item = null;
-  }
-
-  ContributorsAuthorGraph.prototype.create_scale = function() {
-    return ContributorsAuthorGraph.__super__.create_scale.call(this, this.width, this.height);
-  };
-
-  ContributorsAuthorGraph.prototype.create_axes = function() {
-    this.x_axis = d3
-      .axisBottom()
-      .scale(this.x)
-      .ticks(8)
-      .tickFormat(dateTickFormat);
-    return (this.y_axis = d3
-      .axisLeft()
-      .scale(this.y)
-      .ticks(5));
-  };
-
-  ContributorsAuthorGraph.prototype.create_area = function(x, y) {
-    return (this.area = d3
-      .area()
-      .x(d => {
-        const parseDate = d3.timeParse('%Y-%m-%d');
-        return x(parseDate(d));
-      })
-      .y0(this.height)
-      .y1(
-        (function(_this) {
-          return function(d) {
-            if (_this.data[d] != null) {
-              return y(_this.data[d]);
-            } else {
-              return y(0);
-            }
-          };
-        })(this),
-      ));
-  };
-
-  ContributorsAuthorGraph.prototype.create_svg = function() {
-    const persons = document.querySelectorAll('.person');
-    this.list_item = persons[persons.length - 1];
-    this.svg = d3
-      .select(this.list_item)
-      .append('svg')
-      .attr('width', this.width + this.MARGIN.left + this.MARGIN.right)
-      .attr('height', this.height + this.MARGIN.top + this.MARGIN.bottom)
-      .attr('class', 'spark')
-      .append('g')
-      .attr('transform', `translate(${this.MARGIN.left},${this.MARGIN.top})`);
-    return this.svg;
-  };
-
-  ContributorsAuthorGraph.prototype.draw_path = function(data) {
-    return this.svg
-      .append('path')
-      .datum(data)
-      .attr('class', 'area-contributor')
-      .attr('d', this.area);
-  };
-
-  ContributorsAuthorGraph.prototype.draw = function() {
-    this.create_scale();
-    this.create_axes();
-    this.set_domain();
-    this.create_area(this.x, this.y);
-    this.create_svg();
-    this.draw_path(this.dates);
-    this.draw_x_axis();
-    return this.draw_y_axis();
-  };
-
-  ContributorsAuthorGraph.prototype.redraw = function() {
-    this.set_domain();
-    this.svg.select('path').datum(this.dates);
-    this.svg.select('path').attr('d', this.area);
-    this.svg.select('.x.axis').call(this.x_axis);
-    return this.svg.select('.y.axis').call(this.y_axis);
-  };
-
-  return ContributorsAuthorGraph;
-})(ContributorsGraph);
diff --git a/app/assets/javascripts/pages/projects/graphs/show/stat_graph_contributors_util.js b/app/assets/javascripts/pages/projects/graphs/show/stat_graph_contributors_util.js
deleted file mode 100644
index a89a13fe37a..00000000000
--- a/app/assets/javascripts/pages/projects/graphs/show/stat_graph_contributors_util.js
+++ /dev/null
@@ -1,143 +0,0 @@
-/* eslint-disable func-names, no-var, one-var, camelcase, no-param-reassign, no-return-assign, consistent-return, no-cond-assign, no-else-return */
-import _ from 'underscore';
-
-export default {
-  parse_log(log) {
-    var by_author, by_email, data, entry, i, len, total, normalized_email;
-    total = {};
-    by_author = {};
-    by_email = {};
-    for (i = 0, len = log.length; i < len; i += 1) {
-      entry = log[i];
-      if (total[entry.date] == null) {
-        this.add_date(entry.date, total);
-      }
-      normalized_email = entry.author_email.toLowerCase();
-      data = by_author[entry.author_name] || by_email[normalized_email];
-      if (data == null) {
-        data = this.add_author(entry, by_author, by_email);
-      }
-      if (!data[entry.date]) {
-        this.add_date(entry.date, data);
-      }
-      this.store_data(entry, total[entry.date], data[entry.date]);
-    }
-    total = _.toArray(total);
-    by_author = _.toArray(by_author);
-    return {
-      total,
-      by_author,
-    };
-  },
-  add_date(date, collection) {
-    collection[date] = {};
-    return (collection[date].date = date);
-  },
-  add_author(author, by_author, by_email) {
-    var data, normalized_email;
-    data = {};
-    data.author_name = author.author_name;
-    data.author_email = author.author_email;
-    normalized_email = author.author_email.toLowerCase();
-    by_author[author.author_name] = data;
-    by_email[normalized_email] = data;
-    return data;
-  },
-  store_data(entry, total, by_author) {
-    this.store_commits(total, by_author);
-    this.store_additions(entry, total, by_author);
-    return this.store_deletions(entry, total, by_author);
-  },
-  store_commits(total, by_author) {
-    this.add(total, 'commits', 1);
-    return this.add(by_author, 'commits', 1);
-  },
-  add(collection, field, value) {
-    if (collection[field] == null) {
-      collection[field] = 0;
-    }
-    return (collection[field] += value);
-  },
-  store_additions(entry, total, by_author) {
-    if (entry.additions == null) {
-      entry.additions = 0;
-    }
-    this.add(total, 'additions', entry.additions);
-    return this.add(by_author, 'additions', entry.additions);
-  },
-  store_deletions(entry, total, by_author) {
-    if (entry.deletions == null) {
-      entry.deletions = 0;
-    }
-    this.add(total, 'deletions', entry.deletions);
-    return this.add(by_author, 'deletions', entry.deletions);
-  },
-  get_total_data(parsed_log, field) {
-    var log, total_data;
-    log = parsed_log.total;
-    total_data = this.pick_field(log, field);
-    return _.sortBy(total_data, d => d.date);
-  },
-  pick_field(log, field) {
-    var total_data;
-    total_data = [];
-    _.each(log, d => total_data.push(_.pick(d, [field, 'date'])));
-    return total_data;
-  },
-  get_author_data(parsed_log, field, date_range) {
-    var author_data, log;
-    if (date_range == null) {
-      date_range = null;
-    }
-    log = parsed_log.by_author;
-    author_data = [];
-    _.each(
-      log,
-      (function(_this) {
-        return function(log_entry) {
-          var parsed_log_entry;
-          parsed_log_entry = _this.parse_log_entry(log_entry, field, date_range);
-          if (!_.isEmpty(parsed_log_entry.dates)) {
-            return author_data.push(parsed_log_entry);
-          }
-        };
-      })(this),
-    );
-    return _.sortBy(author_data, d => d[field]).reverse();
-  },
-  parse_log_entry(log_entry, field, date_range) {
-    var parsed_entry;
-    parsed_entry = {};
-
-    parsed_entry.author_name = log_entry.author_name;
-    parsed_entry.author_email = log_entry.author_email;
-    parsed_entry.dates = {};
-
-    parsed_entry.commits = 0;
-    parsed_entry.additions = 0;
-    parsed_entry.deletions = 0;
-
-    _.each(
-      _.omit(log_entry, 'author_name', 'author_email'),
-      (function(_this) {
-        return function(value) {
-          if (_this.in_range(value.date, date_range)) {
-            parsed_entry.dates[value.date] = value[field];
-            parsed_entry.commits += value.commits;
-            parsed_entry.additions += value.additions;
-            return (parsed_entry.deletions += value.deletions);
-          }
-        };
-      })(this),
-    );
-    return parsed_entry;
-  },
-  in_range(date, date_range) {
-    var ref;
-    if (date_range === null || (date_range[0] <= (ref = new Date(date)) && ref <= date_range[1])) {
-      return true;
-    } else {
-      return false;
-    }
-  },
-};
diff --git a/app/assets/javascripts/pages/projects/shared/permissions/components/settings_panel.vue b/app/assets/javascripts/pages/projects/shared/permissions/components/settings_panel.vue
index 89cac42abae..fcc57da0649 100644
--- a/app/assets/javascripts/pages/projects/shared/permissions/components/settings_panel.vue
+++ b/app/assets/javascripts/pages/projects/shared/permissions/components/settings_panel.vue
@@ -345,8 +345,8 @@ export default {
       <project-setting-row
         v-if="pagesAvailable && pagesAccessControlEnabled"
         :help-path="pagesHelpPath"
-        label="Pages access control"
-        help-text="Access control for the project's static website"
+        :label="s__('ProjectSettings|Pages')"
+        :help-text="__('With GitLab Pages you can host your static websites on GitLab')"
       >
         <project-feature-setting
           v-model="pagesAccessLevel"
diff --git a/app/assets/stylesheets/pages/graph.scss b/app/assets/stylesheets/pages/graph.scss
index 3febf4cf826..a8de8303a19 100644
--- a/app/assets/stylesheets/pages/graph.scss
+++ b/app/assets/stylesheets/pages/graph.scss
@@ -17,21 +17,6 @@
   }
 }
 
-.graphs {
-  .graph-author-email {
-    float: right;
-    color: $gl-gray-500;
-  }
-
-  .graph-additions {
-    color: $green-600;
-  }
-
-  .graph-deletions {
-    color: $red-500;
-  }
-}
-
 .svg-graph-container {
   width: 100%;
 
diff --git a/app/assets/stylesheets/pages/stat_graph.scss b/app/assets/stylesheets/pages/stat_graph.scss
deleted file mode 100644
index 31ccdacbc02..00000000000
--- a/app/assets/stylesheets/pages/stat_graph.scss
+++ /dev/null
@@ -1,62 +0,0 @@
-.tint-box {
-  background: $stat-graph-common-bg;
-  position: relative;
-  margin-bottom: 10px;
-}
-
-.area {
-  fill: $green-500;
-  fill-opacity: 0.5;
-}
-
-.axis {
-  font-size: 10px;
-}
-
-#contributors-master {
-  @include media-breakpoint-up(md) {
-    @include make-col-ready();
-    @include make-col(12);
-  }
-}
-
-#contributors {
-  flex: 1;
-
-  .contributors-list {
-    margin: 0 0 10px;
-    list-style: none;
-    padding: 0;
-  }
-
-  .person {
-    @include media-breakpoint-up(md) {
-      @include make-col-ready();
-      @include make-col(6);
-    }
-
-    margin-top: 10px;
-
-    @include media-breakpoint-down(xs) {
-      width: 100%;
-    }
-
-    .spark {
-      display: block;
-      background: $stat-graph-common-bg;
-      width: 100%;
-    }
-
-    .area-contributor {
-      fill: $orange-500;
-    }
-  }
-}
-
-.selection rect {
-  fill-opacity: 0.1;
-  stroke-width: 1px;
-  stroke-opacity: 0.4;
-  shape-rendering: crispedges;
-  stroke-dasharray: 3 3;
-}
diff --git a/app/helpers/issuables_helper.rb b/app/helpers/issuables_helper.rb
index df9d1933271..3c72f41a4c9 100644
--- a/app/helpers/issuables_helper.rb
+++ b/app/helpers/issuables_helper.rb
@@ -281,10 +281,7 @@ module IssuablesHelper
     }
 
     data[:hasClosingMergeRequest] = issuable.merge_requests_count(current_user) != 0 if issuable.is_a?(Issue)
-
-    zoom_links = Gitlab::ZoomLinkExtractor.new(issuable.description).links
-
-    data[:zoomMeetingUrl] = zoom_links.last if zoom_links.any?
+    data[:zoomMeetingUrl] = ZoomMeeting.canonical_meeting_url(issuable) if issuable.is_a?(Issue)
 
     if parent.is_a?(Group)
       data[:groupPath] = parent.path
diff --git a/app/helpers/search_helper.rb b/app/helpers/search_helper.rb
index 978d0a8c8fb..a59cc3282bb 100644
--- a/app/helpers/search_helper.rb
+++ b/app/helpers/search_helper.rb
@@ -273,7 +273,7 @@ module SearchHelper
     sanitize(html, tags: %w(a p ol ul li pre code))
   end
 
-  def search_tabs?(tab)
+  def show_user_search_tab?
     return false if Feature.disabled?(:users_search, default_enabled: true)
 
     if @project
diff --git a/app/models/issue.rb b/app/models/issue.rb
index 91bef81227f..260593c38f4 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -40,6 +40,7 @@ class Issue < ApplicationRecord
 
   has_many :issue_assignees
   has_many :assignees, class_name: "User", through: :issue_assignees
+  has_many :zoom_meetings
 
   validates :project, presence: true
 
diff --git a/app/models/zoom_meeting.rb b/app/models/zoom_meeting.rb
index cb3b5c60e54..a7ecd1e6a2c 100644
--- a/app/models/zoom_meeting.rb
+++ b/app/models/zoom_meeting.rb
@@ -14,4 +14,13 @@ class ZoomMeeting < ApplicationRecord
 
   scope :added_to_issue, -> { where(issue_status: :added) }
   scope :removed_from_issue, -> { where(issue_status: :removed) }
+  scope :canonical, -> (issue) { where(issue: issue).added_to_issue }
+
+  def self.canonical_meeting(issue)
+    canonical(issue)&.take
+  end
+
+  def self.canonical_meeting_url(issue)
+    canonical_meeting(issue)&.url
+  end
 end
diff --git a/app/services/issues/update_service.rb b/app/services/issues/update_service.rb
index 528b1ea61b3..b98a4d2567f 100644
--- a/app/services/issues/update_service.rb
+++ b/app/services/issues/update_service.rb
@@ -61,8 +61,6 @@ module Issues
       if added_mentions.present?
         notification_service.async.new_mentions_in_issue(issue, added_mentions, current_user)
       end
-
-      ZoomNotesService.new(issue, project, current_user, old_description: old_associations[:description]).execute
     end
 
     def handle_task_changes(issuable)
diff --git a/app/services/issues/zoom_link_service.rb b/app/services/issues/zoom_link_service.rb
index 561c86475e5..023d7080e88 100644
--- a/app/services/issues/zoom_link_service.rb
+++ b/app/services/issues/zoom_link_service.rb
@@ -6,32 +6,37 @@ module Issues
       super(issue.project, user)
 
       @issue = issue
+      @added_meeting = ZoomMeeting.canonical_meeting(@issue)
     end
 
     def add_link(link)
       if can_add_link? && (link = parse_link(link))
-        track_meeting_added_event
-        success(_('Zoom meeting added'), append_to_description(link))
+        begin
+          add_zoom_meeting(link)
+          success(_('Zoom meeting added'))
+        rescue ActiveRecord::RecordNotUnique
+          error(_('Failed to add a Zoom meeting'))
+        end
       else
         error(_('Failed to add a Zoom meeting'))
       end
     end
 
-    def can_add_link?
-      can? && !link_in_issue_description?
-    end
-
     def remove_link
       if can_remove_link?
-        track_meeting_removed_event
-        success(_('Zoom meeting removed'), remove_from_description)
+        remove_zoom_meeting
+        success(_('Zoom meeting removed'))
       else
         error(_('Failed to remove a Zoom meeting'))
       end
     end
 
+    def can_add_link?
+      can_update_issue? && !@added_meeting
+    end
+
     def can_remove_link?
-      can? && link_in_issue_description?
+      can_update_issue? && !!@added_meeting
     end
 
     def parse_link(link)
@@ -42,10 +47,6 @@ module Issues
 
     attr_reader :issue
 
-    def issue_description
-      issue.description || ''
-    end
-
     def track_meeting_added_event
       ::Gitlab::Tracking.event('IncidentManagement::ZoomIntegration', 'add_zoom_meeting', label: 'Issue ID', value: issue.id)
     end
@@ -54,39 +55,33 @@ module Issues
       ::Gitlab::Tracking.event('IncidentManagement::ZoomIntegration', 'remove_zoom_meeting', label: 'Issue ID', value: issue.id)
     end
 
-    def success(message, description)
-      ServiceResponse
-        .success(message: message, payload: { description: description })
-    end
-
-    def error(message)
-      ServiceResponse.error(message: message)
+    def add_zoom_meeting(link)
+      ZoomMeeting.create(
+        issue: @issue,
+        project: @issue.project,
+        issue_status: :added,
+        url: link
+      )
+      track_meeting_added_event
+      SystemNoteService.zoom_link_added(@issue, @project, current_user)
     end
 
-    def append_to_description(link)
-      "#{issue_description}\n\n#{link}"
+    def remove_zoom_meeting
+      @added_meeting.update(issue_status: :removed)
+      track_meeting_removed_event
+      SystemNoteService.zoom_link_removed(@issue, @project, current_user)
     end
 
-    def remove_from_description
-      link = parse_link(issue_description)
-      return issue_description unless link
-
-      issue_description.delete_suffix(link).rstrip
+    def success(message)
+      ServiceResponse.success(message: message)
     end
 
-    def link_in_issue_description?
-      link = extract_link_from_issue_description
-      return unless link
-
-      Gitlab::ZoomLinkExtractor.new(link).match?
-    end
-
-    def extract_link_from_issue_description
-      issue_description[/(\S+)\z/, 1]
+    def error(message)
+      ServiceResponse.error(message: message)
     end
 
-    def can?
-      current_user.can?(:update_issue, project)
+    def can_update_issue?
+      can?(current_user, :update_issue, project)
     end
   end
 end
diff --git a/app/services/zoom_notes_service.rb b/app/services/zoom_notes_service.rb
deleted file mode 100644
index 983a7fcacd1..00000000000
--- a/app/services/zoom_notes_service.rb
+++ /dev/null
@@ -1,42 +0,0 @@
-# frozen_string_literal: true
-
-class ZoomNotesService
-  def initialize(issue, project, current_user, old_description: nil)
-    @issue = issue
-    @project = project
-    @current_user = current_user
-    @old_description = old_description
-  end
-
-  def execute
-    return if @issue.description == @old_description
-
-    if zoom_link_added?
-      zoom_link_added_notification
-    elsif zoom_link_removed?
-      zoom_link_removed_notification
-    end
-  end
-
-  private
-
-  def zoom_link_added?
-    has_zoom_link?(@issue.description) && !has_zoom_link?(@old_description)
-  end
-
-  def zoom_link_removed?
-    !has_zoom_link?(@issue.description) && has_zoom_link?(@old_description)
-  end
-
-  def has_zoom_link?(text)
-    Gitlab::ZoomLinkExtractor.new(text).match?
-  end
-
-  def zoom_link_added_notification
-    SystemNoteService.zoom_link_added(@issue, @project, @current_user)
-  end
-
-  def zoom_link_removed_notification
-    SystemNoteService.zoom_link_removed(@issue, @project, @current_user)
-  end
-end
diff --git a/app/views/clusters/clusters/index.html.haml b/app/views/clusters/clusters/index.html.haml
index 9bab3bf56aa..049010cadf4 100644
--- a/app/views/clusters/clusters/index.html.haml
+++ b/app/views/clusters/clusters/index.html.haml
@@ -16,7 +16,7 @@
       .bs-callout.bs-callout-info
         = s_('ClusterIntegration|Clusters are utilized by selecting the nearest ancestor with a matching environment scope. For example, project clusters will override group clusters.')
         %strong
-          = link_to _('More information'), help_page_path('user/group/clusters/', anchor: 'cluster-precedence')
+          = link_to _('More information'), help_page_path('user/group/clusters/index', anchor: 'cluster-precedence')
 
     .clusters-table.js-clusters-list
       .gl-responsive-table-row.table-row-header{ role: "row" }
diff --git a/app/views/projects/graphs/show.html.haml b/app/views/projects/graphs/show.html.haml
index 6e5e4607232..a952db0eea3 100644
--- a/app/views/projects/graphs/show.html.haml
+++ b/app/views/projects/graphs/show.html.haml
@@ -1,26 +1,8 @@
 - page_title _('Contributors')
 
-.js-graphs-show{ 'data-project-graph-path': project_graph_path(@project, current_ref, format: :json) }
-  .sub-header-block
-    .tree-ref-holder.inline.vertical-align-middle
-      = render 'shared/ref_switcher', destination: 'graphs'
-    = link_to s_('Commits|History'), project_commits_path(@project, current_ref), class: 'btn'
+.sub-header-block.bg-gray-light.gl-p-3
+  .tree-ref-holder.inline.vertical-align-middle
+    = render 'shared/ref_switcher', destination: 'graphs'
+  = link_to s_('Commits|History'), project_commits_path(@project, current_ref), class: 'btn'
 
-  .loading-graph
-    .center
-      %h3.page-title
-        %i.fa.fa-spinner.fa-spin
-        = s_('ContributorsPage|Building repository graph.')
-      %p.slead
-        = s_('ContributorsPage|Please wait a moment, this page will automatically refresh when ready.')
-
-  .stat-graph.hide
-    .header.clearfix
-      %h3#date_header.page-title
-      %p.light
-        = s_('ContributorsPage|Commits to %{branch_name}, excluding merge commits. Limited to 6,000 commits.') % { branch_name: @ref }
-      %input#brush_change{ :type => "hidden" }
-    .graphs.row
-      #contributors-master.svg-w-100
-      #contributors.clearfix
-        %ol.contributors-list.svg-w-100.row
+.js-contributors-graph{ class: container_class, 'data-project-graph-path': project_graph_path(@project, current_ref, format: :json),'data-project-branch': current_ref }
diff --git a/app/views/projects/services/edit.html.haml b/app/views/projects/services/edit.html.haml
index fc20bc52d1c..1e7903535c6 100644
--- a/app/views/projects/services/edit.html.haml
+++ b/app/views/projects/services/edit.html.haml
@@ -1,6 +1,7 @@
-- breadcrumb_title s_("ProjectService|Integrations")
+- breadcrumb_title @service.title
 - page_title @service.title, s_("ProjectService|Services")
 - add_to_breadcrumbs(s_("ProjectService|Settings"), edit_project_path(@project))
+- add_to_breadcrumbs(s_("ProjectService|Integrations"), namespace_project_settings_integrations_path)
 
 = render 'deprecated_message' if @service.deprecation_message
 
diff --git a/app/views/search/_category.html.haml b/app/views/search/_category.html.haml
index eae2a491ceb..84198489e41 100644
--- a/app/views/search/_category.html.haml
+++ b/app/views/search/_category.html.haml
@@ -1,5 +1,5 @@
 - users = capture_haml do
-  - if search_tabs?(:members)
+  - if show_user_search_tab?
     = search_filter_link 'users', _("Users")
 
 .scrolling-tabs-container.inner-page-scroll-tabs.is-smaller
diff --git a/changelogs/unreleased/30131-breadcrumb-back-to-integrations-not-correct.yml b/changelogs/unreleased/30131-breadcrumb-back-to-integrations-not-correct.yml
new file mode 100644
index 00000000000..5b8a46b4a88
--- /dev/null
+++ b/changelogs/unreleased/30131-breadcrumb-back-to-integrations-not-correct.yml
@@ -0,0 +1,5 @@
+---
+title: Add missing breadcrumb in Project > Settings > Integrations
+merge_request: 18990
+author:
+type: fixed
diff --git a/changelogs/unreleased/33042-persist-zoom-meetings-added-to-issues-in-the-database-2.yml b/changelogs/unreleased/33042-persist-zoom-meetings-added-to-issues-in-the-database-2.yml
new file mode 100644
index 00000000000..dd7df055c71
--- /dev/null
+++ b/changelogs/unreleased/33042-persist-zoom-meetings-added-to-issues-in-the-database-2.yml
@@ -0,0 +1,5 @@
+---
+title: Store Zoom URLs in a table rather than in the issue description
+merge_request: 18620
+author:
+type: changed
diff --git a/changelogs/unreleased/34944-fix-kubernetes-help-text-link.yml b/changelogs/unreleased/34944-fix-kubernetes-help-text-link.yml
new file mode 100644
index 00000000000..5fd87c43bbc
--- /dev/null
+++ b/changelogs/unreleased/34944-fix-kubernetes-help-text-link.yml
@@ -0,0 +1,5 @@
+---
+title: Fix Kubernetes help text link
+merge_request: 19121
+author:
+type: fixed
diff --git a/changelogs/unreleased/add-inheritable-mixin.yml b/changelogs/unreleased/add-inheritable-mixin.yml
new file mode 100644
index 00000000000..e0fd2326cc5
--- /dev/null
+++ b/changelogs/unreleased/add-inheritable-mixin.yml
@@ -0,0 +1,5 @@
+---
+title: Make `Job`, `Bridge` and `Default` inheritable
+merge_request: 18867
+author:
+type: added
diff --git a/lib/gitlab/ci/config/entry/default.rb b/lib/gitlab/ci/config/entry/default.rb
index 6200d7c7f87..78297ff5846 100644
--- a/lib/gitlab/ci/config/entry/default.rb
+++ b/lib/gitlab/ci/config/entry/default.rb
@@ -11,8 +11,7 @@ module Gitlab
         #
         class Default < ::Gitlab::Config::Entry::Node
           include ::Gitlab::Config::Entry::Configurable
-
-          DuplicateError = Class.new(Gitlab::Config::Loader::FormatError)
+          include ::Gitlab::Config::Entry::Inheritable
 
           ALLOWED_KEYS = %i[before_script image services
                             after_script cache].freeze
@@ -43,29 +42,16 @@ module Gitlab
 
           helpers :before_script, :image, :services, :after_script, :cache
 
-          def compose!(deps = nil)
-            super(self)
-
-            inherit!(deps)
-          end
-
           private
 
-          def inherit!(deps)
-            return unless deps
+          def overwrite_entry(deps, key, current_entry)
+            inherited_entry = deps[key]
 
-            self.class.nodes.each do |key, factory|
-              next unless factory.inheritable?
-
-              root_entry = deps[key]
-              next unless root_entry.specified?
-
-              if self[key].specified?
-                raise DuplicateError, "#{key} is defined in top-level and `default:` entry"
-              end
-
-              @entries[key] = root_entry
+            if inherited_entry.specified? && current_entry.specified?
+              raise InheritError, "#{key} is defined in top-level and `default:` entry"
             end
+
+            inherited_entry unless current_entry.specified?
           end
         end
       end
diff --git a/lib/gitlab/ci/config/entry/job.rb b/lib/gitlab/ci/config/entry/job.rb
index 07d5be86b1e..1298e2d3462 100644
--- a/lib/gitlab/ci/config/entry/job.rb
+++ b/lib/gitlab/ci/config/entry/job.rb
@@ -10,6 +10,7 @@ module Gitlab
         class Job < ::Gitlab::Config::Entry::Node
           include ::Gitlab::Config::Entry::Configurable
           include ::Gitlab::Config::Entry::Attributable
+          include ::Gitlab::Config::Entry::Inheritable
 
           ALLOWED_WHEN = %w[on_success on_failure always manual delayed].freeze
           ALLOWED_KEYS = %i[tags script only except rules type image services
@@ -73,13 +74,16 @@ module Gitlab
             inherit: true
 
           entry :script, Entry::Commands,
-            description: 'Commands that will be executed in this job.'
+            description: 'Commands that will be executed in this job.',
+            inherit: false
 
           entry :stage, Entry::Stage,
-            description: 'Pipeline stage this job will be executed into.'
+            description: 'Pipeline stage this job will be executed into.',
+            inherit: false
 
           entry :type, Entry::Stage,
-            description: 'Deprecated: stage this job will be executed into.'
+            description: 'Deprecated: stage this job will be executed into.',
+            inherit: false
 
           entry :after_script, Entry::Script,
             description: 'Commands that will be executed when finishing job.',
@@ -99,28 +103,36 @@ module Gitlab
 
           entry :only, Entry::Policy,
             description: 'Refs policy this job will be executed for.',
-            default: Entry::Policy::DEFAULT_ONLY
+            default: Entry::Policy::DEFAULT_ONLY,
+            inherit: false
 
           entry :except, Entry::Policy,
-            description: 'Refs policy this job will be executed for.'
+            description: 'Refs policy this job will be executed for.',
+            inherit: false
 
           entry :rules, Entry::Rules,
-            description: 'List of evaluable Rules to determine job inclusion.'
+            description: 'List of evaluable Rules to determine job inclusion.',
+            inherit: false
 
           entry :variables, Entry::Variables,
-            description: 'Environment variables available for this job.'
+            description: 'Environment variables available for this job.',
+            inherit: false
 
           entry :artifacts, Entry::Artifacts,
-            description: 'Artifacts configuration for this job.'
+            description: 'Artifacts configuration for this job.',
+            inherit: false
 
           entry :environment, Entry::Environment,
-            description: 'Environment configuration for this job.'
+            description: 'Environment configuration for this job.',
+            inherit: false
 
           entry :coverage, Entry::Coverage,
-            description: 'Coverage configuration for this job.'
+            description: 'Coverage configuration for this job.',
+            inherit: false
 
           entry :retry, Entry::Retry,
-               description: 'Retry configuration for this job.'
+            description: 'Retry configuration for this job.',
+            inherit: false
 
           helpers :before_script, :script, :stage, :type, :after_script,
                   :cache, :image, :services, :only, :except, :variables,
@@ -155,8 +167,6 @@ module Gitlab
                 @entries.delete(:except)
               end
             end
-
-            inherit!(deps)
           end
 
           def name
@@ -185,21 +195,8 @@ module Gitlab
 
           private
 
-          # We inherit config entries from `default:`
-          # if the entry has the `inherit: true` flag set
-          def inherit!(deps)
-            return unless deps
-
-            self.class.nodes.each do |key, factory|
-              next unless factory.inheritable?
-
-              default_entry = deps.default[key]
-              job_entry = self[key]
-
-              if default_entry.specified? && !job_entry.specified?
-                @entries[key] = default_entry
-              end
-            end
+          def overwrite_entry(deps, key, current_entry)
+            deps.default[key] unless current_entry.specified?
           end
 
           def to_hash
diff --git a/lib/gitlab/ci/templates/Android-Fastlane.gitlab-ci.yml b/lib/gitlab/ci/templates/Android-Fastlane.gitlab-ci.yml
index be584814271..bf5b485f853 100644
--- a/lib/gitlab/ci/templates/Android-Fastlane.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Android-Fastlane.gitlab-ci.yml
@@ -113,9 +113,9 @@ promoteBeta:
 promoteProduction:
   extends: .promote_job
   stage: production
-  # We only allow production promotion on `master` because
+  # We only allow production promotion on the default branch because
   # it has its own production scoped secret variables
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
   script:
     - bundle exec fastlane promote_beta_to_production
diff --git a/lib/gitlab/ci/templates/Docker.gitlab-ci.yml b/lib/gitlab/ci/templates/Docker.gitlab-ci.yml
index 15cdbf63cb1..76453881950 100644
--- a/lib/gitlab/ci/templates/Docker.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Docker.gitlab-ci.yml
@@ -10,7 +10,7 @@ docker-build-master:
     - docker build --pull -t "$CI_REGISTRY_IMAGE" .
     - docker push "$CI_REGISTRY_IMAGE"
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
 
 docker-build:
   # Official docker image.
@@ -24,4 +24,4 @@ docker-build:
     - docker build --pull -t "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG" .
     - docker push "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG"
   except:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Jobs/Deploy.gitlab-ci.yml b/lib/gitlab/ci/templates/Jobs/Deploy.gitlab-ci.yml
index 6de7aace8db..6243adcd57c 100644
--- a/lib/gitlab/ci/templates/Jobs/Deploy.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Jobs/Deploy.gitlab-ci.yml
@@ -25,7 +25,7 @@ review:
     kubernetes: active
   except:
     refs:
-      - master
+      - $CI_DEFAULT_BRANCH
     variables:
       - $REVIEW_DISABLED
 
@@ -49,7 +49,7 @@ stop_review:
     kubernetes: active
   except:
     refs:
-      - master
+      - $CI_DEFAULT_BRANCH
     variables:
       - $REVIEW_DISABLED
 
@@ -74,7 +74,7 @@ staging:
     url: http://$CI_PROJECT_PATH_SLUG-staging.$KUBE_INGRESS_BASE_DOMAIN
   only:
     refs:
-      - master
+      - $CI_DEFAULT_BRANCH
     kubernetes: active
     variables:
       - $STAGING_ENABLED
@@ -99,7 +99,7 @@ canary:
   when: manual
   only:
     refs:
-      - master
+      - $CI_DEFAULT_BRANCH
     kubernetes: active
     variables:
       - $CANARY_ENABLED
@@ -127,7 +127,7 @@ production:
   <<: *production_template
   only:
     refs:
-      - master
+      - $CI_DEFAULT_BRANCH
     kubernetes: active
   except:
     variables:
@@ -142,7 +142,7 @@ production_manual:
   allow_failure: false
   only:
     refs:
-      - master
+      - $CI_DEFAULT_BRANCH
     kubernetes: active
     variables:
       - $STAGING_ENABLED
@@ -152,7 +152,7 @@ production_manual:
       - $INCREMENTAL_ROLLOUT_ENABLED
       - $INCREMENTAL_ROLLOUT_MODE
 
-# This job implements incremental rollout on for every push to `master`.
+# This job implements incremental rollout for every push to the default branch.
 
 .rollout: &rollout_template
   extends: .auto-deploy
@@ -179,7 +179,7 @@ production_manual:
   # This selectors are backward compatible mode with $INCREMENTAL_ROLLOUT_ENABLED (before 11.4)
   only:
     refs:
-      - master
+      - $CI_DEFAULT_BRANCH
     kubernetes: active
     variables:
       - $INCREMENTAL_ROLLOUT_MODE == "manual"
@@ -194,7 +194,7 @@ production_manual:
   start_in: 5 minutes
   only:
     refs:
-      - master
+      - $CI_DEFAULT_BRANCH
     kubernetes: active
     variables:
       - $INCREMENTAL_ROLLOUT_MODE == "timed"
diff --git a/lib/gitlab/ci/templates/Julia.gitlab-ci.yml b/lib/gitlab/ci/templates/Julia.gitlab-ci.yml
index 32d4e07d398..49f35409cf6 100644
--- a/lib/gitlab/ci/templates/Julia.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Julia.gitlab-ci.yml
@@ -64,7 +64,7 @@ pages:
     paths:
       - public
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
 
 # WARNING: This template is using the `julia` images from [Docker
 # Hub][3]. One can use custom Julia images and/or the official ones found
diff --git a/lib/gitlab/ci/templates/Maven.gitlab-ci.yml b/lib/gitlab/ci/templates/Maven.gitlab-ci.yml
index 84bb0ff3b33..b9a3c144d28 100644
--- a/lib/gitlab/ci/templates/Maven.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Maven.gitlab-ci.yml
@@ -6,7 +6,7 @@
 # This template will build and test your projects
 # * Caches downloaded dependencies and plugins between invocation.
 # * Verify but don't deploy merge requests.
-# * Deploy built artifacts from master branch only.
+# * Deploy built artifacts from the default branch only.
 
 variables:
   # This will suppress any download for dependencies and plugins or upload messages which would clutter the console log.
@@ -33,7 +33,7 @@ cache:
   script:
     - 'mvn $MAVEN_CLI_OPTS verify'
   except:
-    - master
+    - $CI_DEFAULT_BRANCH
 
 # Verify merge requests using JDK8
 verify:jdk8:
@@ -42,7 +42,7 @@ verify:jdk8:
 # To deploy packages from CI, create a ci_settings.xml file
 # For deploying packages to GitLab's Maven Repository: See https://docs.gitlab.com/ee/user/project/packages/maven_repository.html#creating-maven-packages-with-gitlab-cicd for more details.
 # Please note: The GitLab Maven Repository is currently only available in GitLab Premium / Ultimate.
-# For `master` branch run `mvn deploy` automatically.
+# For the default branch run `mvn deploy` automatically.
 deploy:jdk8:
   stage: deploy
   script:
@@ -51,4 +51,4 @@ deploy:jdk8:
       fi
     - 'mvn $MAVEN_CLI_OPTS deploy -s ci_settings.xml'
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Mono.gitlab-ci.yml b/lib/gitlab/ci/templates/Mono.gitlab-ci.yml
index 10fb6be6c39..456b2b1b030 100644
--- a/lib/gitlab/ci/templates/Mono.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Mono.gitlab-ci.yml
@@ -25,7 +25,7 @@ before_script:
 release:
   stage: deploy
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
   artifacts:
     paths:
       - build/release/MyProject.exe
diff --git a/lib/gitlab/ci/templates/OpenShift.gitlab-ci.yml b/lib/gitlab/ci/templates/OpenShift.gitlab-ci.yml
index 65abee1f5eb..e25cede0252 100644
--- a/lib/gitlab/ci/templates/OpenShift.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/OpenShift.gitlab-ci.yml
@@ -49,7 +49,7 @@ review:
   only:
     - branches
   except:
-    - master
+    - $CI_DEFAULT_BRANCH
 
 stop-review:
   <<: *deploy
@@ -66,7 +66,7 @@ stop-review:
   only:
     - branches
   except:
-    - master
+    - $CI_DEFAULT_BRANCH
 
 staging:
   <<: *deploy
@@ -78,7 +78,7 @@ staging:
     name: staging
     url: http://$CI_PROJECT_NAME-staging.$OPENSHIFT_DOMAIN
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
 
 production:
   <<: *deploy
@@ -91,4 +91,4 @@ production:
     name: production
     url: http://$CI_PROJECT_NAME.$OPENSHIFT_DOMAIN
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Packer.gitlab-ci.yml b/lib/gitlab/ci/templates/Packer.gitlab-ci.yml
index 0a3cf3dcf77..b942b14d474 100644
--- a/lib/gitlab/ci/templates/Packer.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Packer.gitlab-ci.yml
@@ -25,4 +25,4 @@ build:
     - find . -maxdepth 1 -name '*.json' -print0 | xargs -t0n1 packer build
   when: manual
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Pages/Brunch.gitlab-ci.yml b/lib/gitlab/ci/templates/Pages/Brunch.gitlab-ci.yml
index d2dd3fbfb75..3b79a35c320 100644
--- a/lib/gitlab/ci/templates/Pages/Brunch.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Pages/Brunch.gitlab-ci.yml
@@ -12,4 +12,4 @@ pages:
     paths:
       - public
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Pages/Doxygen.gitlab-ci.yml b/lib/gitlab/ci/templates/Pages/Doxygen.gitlab-ci.yml
index ba422c08614..891cf7d7799 100644
--- a/lib/gitlab/ci/templates/Pages/Doxygen.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Pages/Doxygen.gitlab-ci.yml
@@ -10,4 +10,4 @@ pages:
     paths:
       - public
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Pages/Gatsby.gitlab-ci.yml b/lib/gitlab/ci/templates/Pages/Gatsby.gitlab-ci.yml
index a683561a455..6d151ef853f 100644
--- a/lib/gitlab/ci/templates/Pages/Gatsby.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Pages/Gatsby.gitlab-ci.yml
@@ -14,4 +14,4 @@ pages:
     paths:
       - public
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Pages/HTML.gitlab-ci.yml b/lib/gitlab/ci/templates/Pages/HTML.gitlab-ci.yml
index 92f25280c6e..9d4ee7e1602 100644
--- a/lib/gitlab/ci/templates/Pages/HTML.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Pages/HTML.gitlab-ci.yml
@@ -9,4 +9,4 @@ pages:
     paths:
       - public
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Pages/Harp.gitlab-ci.yml b/lib/gitlab/ci/templates/Pages/Harp.gitlab-ci.yml
index 0e206423fa5..63ca721bd4a 100644
--- a/lib/gitlab/ci/templates/Pages/Harp.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Pages/Harp.gitlab-ci.yml
@@ -12,4 +12,4 @@ pages:
     paths:
       - public
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Pages/Hexo.gitlab-ci.yml b/lib/gitlab/ci/templates/Pages/Hexo.gitlab-ci.yml
index d91a8d7421f..e955628f27e 100644
--- a/lib/gitlab/ci/templates/Pages/Hexo.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Pages/Hexo.gitlab-ci.yml
@@ -14,4 +14,4 @@ pages:
       - node_modules
     key: project
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Pages/Hugo.gitlab-ci.yml b/lib/gitlab/ci/templates/Pages/Hugo.gitlab-ci.yml
index 9a3ecd1c34f..b7330263845 100644
--- a/lib/gitlab/ci/templates/Pages/Hugo.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Pages/Hugo.gitlab-ci.yml
@@ -8,10 +8,10 @@ pages:
     paths:
       - public
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
 
 test:
   script:
     - hugo
   except:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Pages/Hyde.gitlab-ci.yml b/lib/gitlab/ci/templates/Pages/Hyde.gitlab-ci.yml
index 7a441a2f70f..f7d393670ad 100644
--- a/lib/gitlab/ci/templates/Pages/Hyde.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Pages/Hyde.gitlab-ci.yml
@@ -11,7 +11,7 @@ test:
     - pip install hyde
     - hyde gen
   except:
-    - master
+    - $CI_DEFAULT_BRANCH
 
 pages:
   stage: deploy
@@ -22,4 +22,4 @@ pages:
     paths:
       - public
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Pages/Jekyll.gitlab-ci.yml b/lib/gitlab/ci/templates/Pages/Jekyll.gitlab-ci.yml
index e7dacd3a1fc..c82b70eb9b0 100644
--- a/lib/gitlab/ci/templates/Pages/Jekyll.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Pages/Jekyll.gitlab-ci.yml
@@ -17,7 +17,7 @@ test:
     paths:
       - test
   except:
-    - master
+    - $CI_DEFAULT_BRANCH
 
 pages:
   stage: deploy
@@ -27,4 +27,4 @@ pages:
     paths:
       - public
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Pages/Jigsaw.gitlab-ci.yml b/lib/gitlab/ci/templates/Pages/Jigsaw.gitlab-ci.yml
index 2d26b86a328..dda0cc52612 100644
--- a/lib/gitlab/ci/templates/Pages/Jigsaw.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Pages/Jigsaw.gitlab-ci.yml
@@ -34,4 +34,4 @@ pages:
     paths:
       - public
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Pages/Lektor.gitlab-ci.yml b/lib/gitlab/ci/templates/Pages/Lektor.gitlab-ci.yml
index 93ab8e0be0d..ea07a7c3145 100644
--- a/lib/gitlab/ci/templates/Pages/Lektor.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Pages/Lektor.gitlab-ci.yml
@@ -9,4 +9,4 @@ pages:
     paths:
       - public
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Pages/Metalsmith.gitlab-ci.yml b/lib/gitlab/ci/templates/Pages/Metalsmith.gitlab-ci.yml
index 6524405133a..a8815c9885a 100644
--- a/lib/gitlab/ci/templates/Pages/Metalsmith.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Pages/Metalsmith.gitlab-ci.yml
@@ -13,4 +13,4 @@ pages:
     paths:
       - public
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Pages/Middleman.gitlab-ci.yml b/lib/gitlab/ci/templates/Pages/Middleman.gitlab-ci.yml
index 57ac323dfdf..4a1f357e699 100644
--- a/lib/gitlab/ci/templates/Pages/Middleman.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Pages/Middleman.gitlab-ci.yml
@@ -12,7 +12,7 @@ test:
     - bundle install --path vendor
     - bundle exec middleman build
   except:
-    - master
+    - $CI_DEFAULT_BRANCH
 
 pages:
   script:
@@ -24,4 +24,4 @@ pages:
     paths:
       - public
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Pages/Nanoc.gitlab-ci.yml b/lib/gitlab/ci/templates/Pages/Nanoc.gitlab-ci.yml
index 7f037b5f5cf..1b59ee352f6 100644
--- a/lib/gitlab/ci/templates/Pages/Nanoc.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Pages/Nanoc.gitlab-ci.yml
@@ -9,4 +9,4 @@ pages:
     paths:
       - public
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Pages/Octopress.gitlab-ci.yml b/lib/gitlab/ci/templates/Pages/Octopress.gitlab-ci.yml
index 6d912a89bc1..e76363494c1 100644
--- a/lib/gitlab/ci/templates/Pages/Octopress.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Pages/Octopress.gitlab-ci.yml
@@ -12,4 +12,4 @@ pages:
     paths:
       - public
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Pages/SwaggerUI.gitlab-ci.yml b/lib/gitlab/ci/templates/Pages/SwaggerUI.gitlab-ci.yml
index 8fd08ea7995..9093c7e29e2 100644
--- a/lib/gitlab/ci/templates/Pages/SwaggerUI.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Pages/SwaggerUI.gitlab-ci.yml
@@ -26,4 +26,4 @@ pages:
     paths:
       - public
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Python.gitlab-ci.yml b/lib/gitlab/ci/templates/Python.gitlab-ci.yml
index 00b8b94b574..72753e6e9c1 100644
--- a/lib/gitlab/ci/templates/Python.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Python.gitlab-ci.yml
@@ -48,4 +48,4 @@ pages:
     paths:
       - public
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/ci/templates/Swift.gitlab-ci.yml b/lib/gitlab/ci/templates/Swift.gitlab-ci.yml
index ffed7a0fec2..c53ead81c51 100644
--- a/lib/gitlab/ci/templates/Swift.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Swift.gitlab-ci.yml
@@ -22,7 +22,7 @@ archive_project:
     - xcodebuild clean archive -archivePath build/ProjectName -scheme SchemeName
     - xcodebuild -exportArchive -exportFormat ipa -archivePath "build/ProjectName.xcarchive" -exportPath "build/ProjectName.ipa" -exportProvisioningProfile "ProvisioningProfileName"
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
   artifacts:
     paths:
       - build/ProjectName.ipa
diff --git a/lib/gitlab/ci/templates/Terraform.gitlab-ci.yml b/lib/gitlab/ci/templates/Terraform.gitlab-ci.yml
index f374bc7e26a..9dae76489e2 100644
--- a/lib/gitlab/ci/templates/Terraform.gitlab-ci.yml
+++ b/lib/gitlab/ci/templates/Terraform.gitlab-ci.yml
@@ -53,4 +53,4 @@ apply:
     - plan
   when: manual
   only:
-    - master
+    - $CI_DEFAULT_BRANCH
diff --git a/lib/gitlab/config/entry/factory.rb b/lib/gitlab/config/entry/factory.rb
index 8f1f4a81bb5..7c5ffaa7621 100644
--- a/lib/gitlab/config/entry/factory.rb
+++ b/lib/gitlab/config/entry/factory.rb
@@ -9,10 +9,12 @@ module Gitlab
       class Factory
         InvalidFactory = Class.new(StandardError)
 
-        def initialize(entry)
-          @entry = entry
+        attr_reader :entry_class
+
+        def initialize(entry_class)
+          @entry_class = entry_class
           @metadata = {}
-          @attributes = { default: entry.default }
+          @attributes = { default: entry_class.default }
         end
 
         def value(value)
@@ -34,6 +36,10 @@ module Gitlab
           @attributes[:description]
         end
 
+        def inherit
+          @attributes[:inherit]
+        end
+
         def inheritable?
           @attributes[:inherit]
         end
@@ -52,7 +58,7 @@ module Gitlab
           if @value.nil?
             Entry::Unspecified.new(fabricate_unspecified)
           else
-            fabricate(@entry, @value)
+            fabricate(entry_class, @value)
           end
         end
 
@@ -68,12 +74,12 @@ module Gitlab
           if default.nil?
             fabricate(Entry::Undefined)
           else
-            fabricate(@entry, default)
+            fabricate(entry_class, default)
           end
         end
 
-        def fabricate(entry, value = nil)
-          entry.new(value, @metadata) do |node|
+        def fabricate(entry_class, value = nil)
+          entry_class.new(value, @metadata) do |node|
             node.key = @attributes[:key]
             node.parent = @attributes[:parent]
             node.default = @attributes[:default]
diff --git a/lib/gitlab/config/entry/inheritable.rb b/lib/gitlab/config/entry/inheritable.rb
new file mode 100644
index 00000000000..91ca82e6338
--- /dev/null
+++ b/lib/gitlab/config/entry/inheritable.rb
@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Config
+    module Entry
+      ##
+      # Entry that represents an inheritable configs.
+      #
+      module Inheritable
+        InheritError = Class.new(Gitlab::Config::Loader::FormatError)
+
+        def compose!(deps = nil, &blk)
+          super(deps, &blk)
+
+          inherit!(deps)
+        end
+
+        private
+
+        # We inherit config entries from `default:`
+        # if the entry has the `inherit: true` flag set
+        def inherit!(deps)
+          return unless deps
+
+          self.class.nodes.each do |key, factory|
+            next unless factory.inheritable?
+
+            new_entry = overwrite_entry(deps, key, self[key])
+
+            entries[key] = new_entry if new_entry&.specified?
+          end
+        end
+
+        def overwrite_entry(deps, key, current_entry)
+          raise NotImplementedError
+        end
+      end
+    end
+  end
+end
diff --git a/lib/gitlab/import_export/import_export.yml b/lib/gitlab/import_export/import_export.yml
index 141e73e6a47..9c00e3c8910 100644
--- a/lib/gitlab/import_export/import_export.yml
+++ b/lib/gitlab/import_export/import_export.yml
@@ -28,6 +28,7 @@ tree:
         - label:
           - :priorities
       - :issue_assignees
+      - :zoom_meetings
     - snippets:
       - :award_emoji
       - notes:
diff --git a/lib/gitlab/quick_actions/issue_actions.rb b/lib/gitlab/quick_actions/issue_actions.rb
index 404e0c31871..838aefb59f0 100644
--- a/lib/gitlab/quick_actions/issue_actions.rb
+++ b/lib/gitlab/quick_actions/issue_actions.rb
@@ -174,18 +174,14 @@ module Gitlab
         params '<Zoom URL>'
         types Issue
         condition do
-          zoom_link_service.can_add_link?
+          @zoom_service = zoom_link_service
+          @zoom_service.can_add_link?
         end
         parse_params do |link|
-          zoom_link_service.parse_link(link)
+          @zoom_service.parse_link(link)
         end
         command :zoom do |link|
-          result = zoom_link_service.add_link(link)
-
-          if result.success?
-            @updates[:description] = result.payload[:description]
-          end
-
+          result = @zoom_service.add_link(link)
           @execution_message[:zoom] = result.message
         end
 
@@ -194,15 +190,11 @@ module Gitlab
         execution_message _('Zoom meeting removed')
         types Issue
         condition do
-          zoom_link_service.can_remove_link?
+          @zoom_service = zoom_link_service
+          @zoom_service.can_remove_link?
         end
         command :remove_zoom do
-          result = zoom_link_service.remove_link
-
-          if result.success?
-            @updates[:description] = result.payload[:description]
-          end
-
+          result = @zoom_service.remove_link
           @execution_message[:remove_zoom] = result.message
         end
 
diff --git a/locale/gitlab.pot b/locale/gitlab.pot
index 1e47dd679ac..bcce8ab490d 100644
--- a/locale/gitlab.pot
+++ b/locale/gitlab.pot
@@ -4226,6 +4226,9 @@ msgstr ""
 msgid "Commits per weekday"
 msgstr ""
 
+msgid "Commits to"
+msgstr ""
+
 msgid "Commits|An error occurred while fetching merge requests data."
 msgstr ""
 
@@ -4510,18 +4513,6 @@ msgstr ""
 msgid "Contributors"
 msgstr ""
 
-msgid "ContributorsPage|%{startDate} – %{endDate}"
-msgstr ""
-
-msgid "ContributorsPage|Building repository graph."
-msgstr ""
-
-msgid "ContributorsPage|Commits to %{branch_name}, excluding merge commits. Limited to 6,000 commits."
-msgstr ""
-
-msgid "ContributorsPage|Please wait a moment, this page will automatically refresh when ready."
-msgstr ""
-
 msgid "Control emails linked to your account"
 msgstr ""
 
@@ -6465,9 +6456,6 @@ msgstr ""
 msgid "Error deleting  %{issuableType}"
 msgstr ""
 
-msgid "Error fetching contributors data."
-msgstr ""
-
 msgid "Error fetching diverging counts for branches. Please try again."
 msgstr ""
 
@@ -6705,6 +6693,9 @@ msgstr ""
 msgid "Except policy:"
 msgstr ""
 
+msgid "Excluding merge commits. Limited to 6,000 commits."
+msgstr ""
+
 msgid "Existing"
 msgstr ""
 
@@ -11322,6 +11313,9 @@ msgstr ""
 msgid "Number of changes (branches or tags) in a single push to determine whether webhooks and services will be fired or not. Webhooks and services won't be submitted if it surpasses that value."
 msgstr ""
 
+msgid "Number of commits"
+msgstr ""
+
 msgid "Number of commits per MR"
 msgstr ""
 
@@ -12917,6 +12911,9 @@ msgstr ""
 msgid "ProjectSettings|Only signed commits can be pushed to this repository."
 msgstr ""
 
+msgid "ProjectSettings|Pages"
+msgstr ""
+
 msgid "ProjectSettings|Pipelines must succeed"
 msgstr ""
 
@@ -18905,6 +18902,9 @@ msgstr ""
 msgid "Will deploy to"
 msgstr ""
 
+msgid "With GitLab Pages you can host your static websites on GitLab"
+msgstr ""
+
 msgid "With contribution analytics you can have an overview for the activity of issues, merge requests and push events of your organization and its members."
 msgstr ""
 
diff --git a/spec/features/issues/user_creates_issue_spec.rb b/spec/features/issues/user_creates_issue_spec.rb
index a71395c0e47..39ce3415727 100644
--- a/spec/features/issues/user_creates_issue_spec.rb
+++ b/spec/features/issues/user_creates_issue_spec.rb
@@ -92,19 +92,6 @@ describe "User creates issue" do
           .and have_content(label_titles.first)
       end
     end
-
-    context "with Zoom link" do
-      it "adds Zoom button" do
-        issue_title = "Issue containing Zoom meeting link"
-        zoom_url = "https://gitlab.zoom.us/j/123456789"
-
-        fill_in("Title", with: issue_title)
-        fill_in("Description", with: zoom_url)
-        click_button("Submit issue")
-
-        expect(page).to have_link('Join Zoom meeting', href: zoom_url)
-      end
-    end
   end
 
   context "when signed in as user with special characters in their name" do
diff --git a/spec/features/projects/graph_spec.rb b/spec/features/projects/graph_spec.rb
index 6082eb03374..5dabaf20952 100644
--- a/spec/features/projects/graph_spec.rb
+++ b/spec/features/projects/graph_spec.rb
@@ -29,12 +29,6 @@ describe 'Project Graph', :js do
     end
   end
 
-  it 'renders graphs' do
-    visit project_graph_path(project, 'master')
-
-    expect(page).to have_selector('.stat-graph', visible: false)
-  end
-
   context 'commits graph' do
     before do
       visit commits_project_graph_path(project, 'master')
diff --git a/spec/fixtures/lib/gitlab/import_export/project.json b/spec/fixtures/lib/gitlab/import_export/project.json
index fbd752b7403..864933ca1b4 100644
--- a/spec/fixtures/lib/gitlab/import_export/project.json
+++ b/spec/fixtures/lib/gitlab/import_export/project.json
@@ -80,6 +80,17 @@
           "issue_id": 40
         }
       ],
+      "zoom_meetings": [
+        {
+          "id": 1,
+          "project_id": 5,
+          "issue_id": 40,
+          "url": "https://zoom.us/j/123456789",
+          "issue_status": 1,
+          "created_at": "2016-06-14T15:02:04.418Z",
+          "updated_at": "2016-06-14T15:02:04.418Z"
+        }
+      ],
       "milestone": {
         "id": 1,
         "title": "test milestone",
diff --git a/spec/frontend/contributors/component/__snapshots__/contributors_spec.js.snap b/spec/frontend/contributors/component/__snapshots__/contributors_spec.js.snap
new file mode 100644
index 00000000000..b87afdd7eb4
--- /dev/null
+++ b/spec/frontend/contributors/component/__snapshots__/contributors_spec.js.snap
@@ -0,0 +1,47 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Contributors charts should render charts when loading completed and there is chart data 1`] = `
+<div>
+  <div
+    class="contributors-charts"
+  >
+    <h4>
+      Commits to master
+    </h4>
+     
+    <span>
+      Excluding merge commits. Limited to 6,000 commits.
+    </span>
+     
+    <div>
+      <glareachart-stub
+        data="[object Object]"
+        height="264"
+        option="[object Object]"
+      />
+    </div>
+     
+    <div
+      class="row"
+    >
+      <div
+        class="col-6"
+      >
+        <h4>
+          John
+        </h4>
+         
+        <p>
+          2 commits (jawnnypoo@gmail.com)
+        </p>
+         
+        <glareachart-stub
+          data="[object Object]"
+          height="216"
+          option="[object Object]"
+        />
+      </div>
+    </div>
+  </div>
+</div>
+`;
diff --git a/spec/frontend/contributors/component/contributors_spec.js b/spec/frontend/contributors/component/contributors_spec.js
new file mode 100644
index 00000000000..fdba09ed26c
--- /dev/null
+++ b/spec/frontend/contributors/component/contributors_spec.js
@@ -0,0 +1,69 @@
+import Vue from 'vue';
+import { shallowMount, createLocalVue } from '@vue/test-utils';
+import { createStore } from '~/contributors/stores';
+import axios from '~/lib/utils/axios_utils';
+import MockAdapter from 'axios-mock-adapter';
+import ContributorsCharts from '~/contributors/components/contributors.vue';
+
+const localVue = createLocalVue();
+let wrapper;
+let mock;
+let store;
+const Component = Vue.extend(ContributorsCharts);
+const endpoint = 'contributors';
+const branch = 'master';
+const chartData = [
+  { author_name: 'John', author_email: 'jawnnypoo@gmail.com', date: '2019-05-05' },
+  { author_name: 'John', author_email: 'jawnnypoo@gmail.com', date: '2019-03-03' },
+];
+
+function factory() {
+  mock = new MockAdapter(axios);
+  jest.spyOn(axios, 'get');
+  mock.onGet().reply(200, chartData);
+  store = createStore();
+
+  wrapper = shallowMount(Component, {
+    propsData: {
+      endpoint,
+      branch,
+    },
+    stubs: {
+      GlLoadingIcon: true,
+      GlAreaChart: true,
+    },
+    store,
+  });
+}
+
+describe('Contributors charts', () => {
+  beforeEach(() => {
+    factory();
+  });
+
+  afterEach(() => {
+    mock.restore();
+    wrapper.destroy();
+  });
+
+  it('should fetch chart data when mounted', () => {
+    expect(axios.get).toHaveBeenCalledWith(endpoint);
+  });
+
+  it('should display loader whiled loading data', () => {
+    wrapper.vm.$store.state.loading = true;
+    return localVue.nextTick(() => {
+      expect(wrapper.find('.contributors-loader').exists()).toBe(true);
+    });
+  });
+
+  it('should render charts when loading completed and there is chart data', () => {
+    wrapper.vm.$store.state.loading = false;
+    wrapper.vm.$store.state.chartData = chartData;
+    return localVue.nextTick(() => {
+      expect(wrapper.find('.contributors-loader').exists()).toBe(false);
+      expect(wrapper.find('.contributors-charts').exists()).toBe(true);
+      expect(wrapper.element).toMatchSnapshot();
+    });
+  });
+});
diff --git a/spec/frontend/contributors/store/actions_spec.js b/spec/frontend/contributors/store/actions_spec.js
new file mode 100644
index 00000000000..bb017e0ac0f
--- /dev/null
+++ b/spec/frontend/contributors/store/actions_spec.js
@@ -0,0 +1,60 @@
+import axios from '~/lib/utils/axios_utils';
+import MockAdapter from 'axios-mock-adapter';
+import testAction from 'helpers/vuex_action_helper';
+import flashError from '~/flash';
+import * as actions from '~/contributors/stores/actions';
+import * as types from '~/contributors/stores/mutation_types';
+
+jest.mock('~/flash.js');
+
+describe('Contributors store actions', () => {
+  describe('fetchChartData', () => {
+    let mock;
+    const endpoint = '/contributors';
+    const chartData = { '2017-11': 0, '2017-12': 2 };
+
+    beforeEach(() => {
+      mock = new MockAdapter(axios);
+    });
+
+    it('should commit SET_CHART_DATA with received response', done => {
+      mock.onGet().reply(200, chartData);
+
+      testAction(
+        actions.fetchChartData,
+        { endpoint },
+        {},
+        [
+          { type: types.SET_LOADING_STATE, payload: true },
+          { type: types.SET_CHART_DATA, payload: chartData },
+          { type: types.SET_LOADING_STATE, payload: false },
+        ],
+        [],
+        () => {
+          mock.restore();
+          done();
+        },
+      );
+    });
+
+    it('should show flash on API error', done => {
+      mock.onGet().reply(400, 'Not Found');
+
+      testAction(
+        actions.fetchChartData,
+        { endpoint },
+        {},
+        [{ type: types.SET_LOADING_STATE, payload: true }],
+        [],
+        () => {
+          expect(flashError).toHaveBeenCalledWith(expect.stringMatching('error'));
+          mock.restore();
+          done();
+        },
+      );
+    });
+  });
+});
+
+// prevent babel-plugin-rewire from generating an invalid default during karma tests
+export default () => {};
diff --git a/spec/frontend/contributors/store/getters_spec.js b/spec/frontend/contributors/store/getters_spec.js
new file mode 100644
index 00000000000..62ae9b36f87
--- /dev/null
+++ b/spec/frontend/contributors/store/getters_spec.js
@@ -0,0 +1,73 @@
+import * as getters from '~/contributors/stores/getters';
+
+describe('Contributors Store Getters', () => {
+  const state = {};
+
+  describe('showChart', () => {
+    it('should NOT show chart if loading', () => {
+      state.loading = true;
+
+      expect(getters.showChart(state)).toEqual(false);
+    });
+
+    it('should NOT show chart there is not data', () => {
+      state.loading = false;
+      state.chartData = null;
+
+      expect(getters.showChart(state)).toEqual(false);
+    });
+
+    it('should show the chart in case loading complated and there is data', () => {
+      state.loading = false;
+      state.chartData = true;
+
+      expect(getters.showChart(state)).toEqual(true);
+    });
+
+    describe('parsedData', () => {
+      let parsed;
+
+      beforeAll(() => {
+        state.chartData = [
+          { author_name: 'John', author_email: 'jawnnypoo@gmail.com', date: '2019-05-05' },
+          { author_name: 'John', author_email: 'jawnnypoo@gmail.com', date: '2019-05-05' },
+          { author_name: 'Carlson', author_email: 'jawnnypoo@gmail.com', date: '2019-03-03' },
+          { author_name: 'Carlson', author_email: 'jawnnypoo@gmail.com', date: '2019-05-05' },
+          { author_name: 'John', author_email: 'jawnnypoo@gmail.com', date: '2019-04-04' },
+          { author_name: 'John', author_email: 'jawnnypoo@gmail.com', date: '2019-04-04' },
+          { author_name: 'John', author_email: 'jawnnypoo@gmail.com', date: '2019-03-03' },
+        ];
+        parsed = getters.parsedData(state);
+      });
+
+      it('should group contributions by date ', () => {
+        expect(parsed.total).toMatchObject({ '2019-05-05': 3, '2019-03-03': 2, '2019-04-04': 2 });
+      });
+
+      it('should group contributions by author ', () => {
+        expect(parsed.byAuthor).toMatchObject({
+          Carlson: {
+            email: 'jawnnypoo@gmail.com',
+            commits: 2,
+            dates: {
+              '2019-03-03': 1,
+              '2019-05-05': 1,
+            },
+          },
+          John: {
+            email: 'jawnnypoo@gmail.com',
+            commits: 5,
+            dates: {
+              '2019-03-03': 1,
+              '2019-04-04': 2,
+              '2019-05-05': 2,
+            },
+          },
+        });
+      });
+    });
+  });
+});
+
+// prevent babel-plugin-rewire from generating an invalid default during karma tests
+export default () => {};
diff --git a/spec/frontend/contributors/store/mutations_spec.js b/spec/frontend/contributors/store/mutations_spec.js
new file mode 100644
index 00000000000..e9e756d4a65
--- /dev/null
+++ b/spec/frontend/contributors/store/mutations_spec.js
@@ -0,0 +1,40 @@
+import state from '~/contributors/stores/state';
+import mutations from '~/contributors/stores/mutations';
+import * as types from '~/contributors/stores/mutation_types';
+
+describe('Contributors mutations', () => {
+  let stateCopy;
+
+  beforeEach(() => {
+    stateCopy = state();
+  });
+
+  describe('SET_LOADING_STATE', () => {
+    it('should set loading flag', () => {
+      const loading = true;
+      mutations[types.SET_LOADING_STATE](stateCopy, loading);
+
+      expect(stateCopy.loading).toEqual(loading);
+    });
+  });
+
+  describe('SET_CHART_DATA', () => {
+    const chartData = { '2017-11': 0, '2017-12': 2 };
+
+    it('should set chart data', () => {
+      mutations[types.SET_CHART_DATA](stateCopy, chartData);
+
+      expect(stateCopy.chartData).toEqual(chartData);
+    });
+  });
+
+  describe('SET_ACTIVE_BRANCH', () => {
+    it('should set search query', () => {
+      const branch = 'feature-branch';
+
+      mutations[types.SET_ACTIVE_BRANCH](stateCopy, branch);
+
+      expect(stateCopy.branch).toEqual(branch);
+    });
+  });
+});
diff --git a/spec/frontend/contributors/utils_spec.js b/spec/frontend/contributors/utils_spec.js
new file mode 100644
index 00000000000..a2b9154329b
--- /dev/null
+++ b/spec/frontend/contributors/utils_spec.js
@@ -0,0 +1,21 @@
+import * as utils from '~/contributors/utils';
+
+describe('Contributors Util Functions', () => {
+  describe('xAxisLabelFormatter', () => {
+    it('should return year if the date is in January', () => {
+      expect(utils.xAxisLabelFormatter(new Date('01-12-2019'))).toEqual('2019');
+    });
+
+    it('should return month name otherwise', () => {
+      expect(utils.xAxisLabelFormatter(new Date('12-02-2019'))).toEqual('Dec');
+      expect(utils.xAxisLabelFormatter(new Date('07-12-2019'))).toEqual('Jul');
+    });
+  });
+
+  describe('dateFormatter', () => {
+    it('should format provided date to YYYY-MM-DD format', () => {
+      expect(utils.dateFormatter(new Date('December 17, 1995 03:24:00'))).toEqual('1995-12-17');
+      expect(utils.dateFormatter(new Date(1565308800000))).toEqual('2019-08-09');
+    });
+  });
+});
diff --git a/spec/frontend/lib/utils/datetime_utility_spec.js b/spec/frontend/lib/utils/datetime_utility_spec.js
index e2e71229320..149ce331ae5 100644
--- a/spec/frontend/lib/utils/datetime_utility_spec.js
+++ b/spec/frontend/lib/utils/datetime_utility_spec.js
@@ -441,3 +441,34 @@ describe('getDateInPast', () => {
     expect(date).toStrictEqual(new Date(1563235200000));
   });
 });
+
+describe('getDatesInRange', () => {
+  it('returns an empty array if 1st or 2nd argument is not a Date object', () => {
+    const d1 = new Date('2019-01-01');
+    const d2 = 90;
+    const range = datetimeUtility.getDatesInRange(d1, d2);
+
+    expect(range).toEqual([]);
+  });
+
+  it('returns a range of dates between two given dates', () => {
+    const d1 = new Date('2019-01-01');
+    const d2 = new Date('2019-01-31');
+
+    const range = datetimeUtility.getDatesInRange(d1, d2);
+
+    expect(range.length).toEqual(31);
+  });
+
+  it('applies mapper function if provided fro each item in range', () => {
+    const d1 = new Date('2019-01-01');
+    const d2 = new Date('2019-01-31');
+    const formatter = date => date.getDate();
+
+    const range = datetimeUtility.getDatesInRange(d1, d2, formatter);
+
+    range.forEach((formattedItem, index) => {
+      expect(formattedItem).toEqual(index + 1);
+    });
+  });
+});
diff --git a/spec/helpers/issuables_helper_spec.rb b/spec/helpers/issuables_helper_spec.rb
index 2f67ea457a0..1af8b7390bb 100644
--- a/spec/helpers/issuables_helper_spec.rb
+++ b/spec/helpers/issuables_helper_spec.rb
@@ -203,42 +203,53 @@ describe IssuablesHelper do
     end
 
     describe '#zoomMeetingUrl in issue' do
-      let(:issue) { create(:issue, author: user, description: description) }
+      let(:issue) { create(:issue, author: user) }
 
       before do
         assign(:project, issue.project)
       end
 
-      context 'no zoom links in the issue description' do
-        let(:description) { 'issue text' }
-
-        it 'does not set zoomMeetingUrl' do
-          expect(helper.issuable_initial_data(issue))
-              .not_to include(:zoomMeetingUrl)
+      shared_examples 'sets zoomMeetingUrl to nil' do
+        specify do
+          expect(helper.issuable_initial_data(issue)[:zoomMeetingUrl])
+            .to be_nil
         end
       end
 
-      context 'no zoom links in the issue description if it has link but not a zoom link' do
-        let(:description) { 'issue text https://stackoverflow.com/questions/22' }
+      context 'with no "added" zoom mettings' do
+        it_behaves_like 'sets zoomMeetingUrl to nil'
+
+        context 'with multiple removed meetings' do
+          before do
+            create(:zoom_meeting, issue: issue, issue_status: :removed)
+            create(:zoom_meeting, issue: issue, issue_status: :removed)
+          end
 
-        it 'does not set zoomMeetingUrl' do
-          expect(helper.issuable_initial_data(issue))
-              .not_to include(:zoomMeetingUrl)
+          it_behaves_like 'sets zoomMeetingUrl to nil'
         end
       end
 
-      context 'with two zoom links in description' do
-        let(:description) do
-          <<~TEXT
-            issue text and
-            zoom call on https://zoom.us/j/123456789 this url
-            and new zoom url https://zoom.us/s/lastone and some more text
-          TEXT
+      context 'with "added" zoom meeting' do
+        before do
+          create(:zoom_meeting, issue: issue)
         end
 
-        it 'sets zoomMeetingUrl value to the last url' do
-          expect(helper.issuable_initial_data(issue))
-            .to include(zoomMeetingUrl: 'https://zoom.us/s/lastone')
+        shared_examples 'sets zoomMeetingUrl to canonical meeting url' do
+          specify do
+            expect(helper.issuable_initial_data(issue))
+              .to include(zoomMeetingUrl: 'https://zoom.us/j/123456789')
+          end
+        end
+
+        it_behaves_like 'sets zoomMeetingUrl to canonical meeting url'
+
+        context 'with muliple "removed" zoom meetings' do
+          before do
+            create(:zoom_meeting, issue: issue, issue_status: :removed)
+            create(:zoom_meeting, issue: issue, issue_status: :removed)
+          end
+
+          it_behaves_like 'sets zoomMeetingUrl to canonical meeting url'
         end
       end
     end
diff --git a/spec/helpers/search_helper_spec.rb b/spec/helpers/search_helper_spec.rb
index 9e9f87b3407..561cd085ad1 100644
--- a/spec/helpers/search_helper_spec.rb
+++ b/spec/helpers/search_helper_spec.rb
@@ -271,4 +271,50 @@ describe SearchHelper do
       expect(link).to have_css('li[data-foo="bar"]')
     end
   end
+
+  describe '#show_user_search_tab?' do
+    subject { show_user_search_tab? }
+
+    context 'when users_search feature is disabled' do
+      before do
+        stub_feature_flags(users_search: false)
+      end
+
+      it { is_expected.to eq(false) }
+    end
+
+    context 'when project search' do
+      before do
+        @project = :some_project
+
+        expect(self).to receive(:project_search_tabs?)
+          .with(:members)
+          .and_return(:value)
+      end
+
+      it 'delegates to project_search_tabs?' do
+        expect(subject).to eq(:value)
+      end
+    end
+
+    context 'when not project search' do
+      context 'when current_user can read_users_list' do
+        before do
+          allow(self).to receive(:current_user).and_return(:the_current_user)
+          allow(self).to receive(:can?).with(:the_current_user, :read_users_list).and_return(true)
+        end
+
+        it { is_expected.to eq(true) }
+      end
+
+      context 'when current_user cannot read_users_list' do
+        before do
+          allow(self).to receive(:current_user).and_return(:the_current_user)
+          allow(self).to receive(:can?).with(:the_current_user, :read_users_list).and_return(false)
+        end
+
+        it { is_expected.to eq(false) }
+      end
+    end
+  end
 end
diff --git a/spec/javascripts/graphs/stat_graph_contributors_graph_spec.js b/spec/javascripts/graphs/stat_graph_contributors_graph_spec.js
deleted file mode 100644
index 563d134ca81..00000000000
--- a/spec/javascripts/graphs/stat_graph_contributors_graph_spec.js
+++ /dev/null
@@ -1,152 +0,0 @@
-/* eslint-disable jasmine/no-suite-dupes, vars-on-top, no-var */
-
-import { scaleLinear, scaleTime } from 'd3-scale';
-import { timeParse } from 'd3-time-format';
-import {
-  ContributorsGraph,
-  ContributorsMasterGraph,
-} from '~/pages/projects/graphs/show/stat_graph_contributors_graph';
-
-const d3 = { scaleLinear, scaleTime, timeParse };
-
-describe('ContributorsGraph', function() {
-  describe('#set_x_domain', function() {
-    it('set the x_domain', function() {
-      ContributorsGraph.set_x_domain(20);
-
-      expect(ContributorsGraph.prototype.x_domain).toEqual(20);
-    });
-  });
-
-  describe('#set_y_domain', function() {
-    it('sets the y_domain', function() {
-      ContributorsGraph.set_y_domain([{ commits: 30 }]);
-
-      expect(ContributorsGraph.prototype.y_domain).toEqual([0, 30]);
-    });
-  });
-
-  describe('#init_x_domain', function() {
-    it('sets the initial x_domain', function() {
-      ContributorsGraph.init_x_domain([{ date: '2013-01-31' }, { date: '2012-01-31' }]);
-
-      expect(ContributorsGraph.prototype.x_domain).toEqual(['2012-01-31', '2013-01-31']);
-    });
-  });
-
-  describe('#init_y_domain', function() {
-    it('sets the initial y_domain', function() {
-      ContributorsGraph.init_y_domain([{ commits: 30 }]);
-
-      expect(ContributorsGraph.prototype.y_domain).toEqual([0, 30]);
-    });
-  });
-
-  describe('#init_domain', function() {
-    it('calls init_x_domain and init_y_domain', function() {
-      spyOn(ContributorsGraph, 'init_x_domain');
-      spyOn(ContributorsGraph, 'init_y_domain');
-      ContributorsGraph.init_domain();
-
-      expect(ContributorsGraph.init_x_domain).toHaveBeenCalled();
-      expect(ContributorsGraph.init_y_domain).toHaveBeenCalled();
-    });
-  });
-
-  describe('#set_dates', function() {
-    it('sets the dates', function() {
-      ContributorsGraph.set_dates('2013-12-01');
-
-      expect(ContributorsGraph.prototype.dates).toEqual('2013-12-01');
-    });
-  });
-
-  describe('#set_x_domain', function() {
-    it("sets the instance's x domain using the prototype's x_domain", function() {
-      ContributorsGraph.prototype.x_domain = 20;
-      var instance = new ContributorsGraph();
-      instance.x = d3
-        .scaleTime()
-        .range([0, 100])
-        .clamp(true);
-      spyOn(instance.x, 'domain');
-      instance.set_x_domain();
-
-      expect(instance.x.domain).toHaveBeenCalledWith(20);
-    });
-  });
-
-  describe('#set_y_domain', function() {
-    it("sets the instance's y domain using the prototype's y_domain", function() {
-      ContributorsGraph.prototype.y_domain = 30;
-      var instance = new ContributorsGraph();
-      instance.y = d3
-        .scaleLinear()
-        .range([100, 0])
-        .nice();
-      spyOn(instance.y, 'domain');
-      instance.set_y_domain();
-
-      expect(instance.y.domain).toHaveBeenCalledWith(30);
-    });
-  });
-
-  describe('#set_domain', function() {
-    it('calls set_x_domain and set_y_domain', function() {
-      var instance = new ContributorsGraph();
-      spyOn(instance, 'set_x_domain');
-      spyOn(instance, 'set_y_domain');
-      instance.set_domain();
-
-      expect(instance.set_x_domain).toHaveBeenCalled();
-      expect(instance.set_y_domain).toHaveBeenCalled();
-    });
-  });
-
-  describe('#set_data', function() {
-    it('sets the data', function() {
-      var instance = new ContributorsGraph();
-      instance.set_data('20');
-
-      expect(instance.data).toEqual('20');
-    });
-  });
-});
-
-describe('ContributorsMasterGraph', function() {
-  // TODO: fix or remove
-  // describe("#process_dates", function () {
-  //   it("gets and parses dates", function () {
-  //     var graph = new ContributorsMasterGraph();
-  //     var data = 'random data here';
-  //     spyOn(graph, 'parse_dates');
-  //     spyOn(graph, 'get_dates').andReturn("get");
-  //     spyOn(ContributorsGraph,'set_dates').andCallThrough();
-  //     graph.process_dates(data);
-  //     expect(graph.parse_dates).toHaveBeenCalledWith(data);
-  //     expect(graph.get_dates).toHaveBeenCalledWith(data);
-  //     expect(ContributorsGraph.set_dates).toHaveBeenCalledWith("get");
-  //   });
-  // });
-
-  describe('#get_dates', function() {
-    it('plucks the date field from data collection', function() {
-      var graph = new ContributorsMasterGraph();
-      var data = [{ date: '2013-01-01' }, { date: '2012-12-15' }];
-
-      expect(graph.get_dates(data)).toEqual(['2013-01-01', '2012-12-15']);
-    });
-  });
-
-  describe('#parse_dates', function() {
-    it('parses the dates', function() {
-      var graph = new ContributorsMasterGraph();
-      var parseDate = d3.timeParse('%Y-%m-%d');
-      var data = [{ date: '2013-01-01' }, { date: '2012-12-15' }];
-      var correct = [{ date: parseDate(data[0].date) }, { date: parseDate(data[1].date) }];
-      graph.parse_dates(data);
-
-      expect(data).toEqual(correct);
-    });
-  });
-});
diff --git a/spec/javascripts/graphs/stat_graph_contributors_spec.js b/spec/javascripts/graphs/stat_graph_contributors_spec.js
deleted file mode 100644
index 2ebb6845a8b..00000000000
--- a/spec/javascripts/graphs/stat_graph_contributors_spec.js
+++ /dev/null
@@ -1,28 +0,0 @@
-import ContributorsStatGraph from '~/pages/projects/graphs/show/stat_graph_contributors';
-import { ContributorsGraph } from '~/pages/projects/graphs/show/stat_graph_contributors_graph';
-
-import { setLanguage } from '../helpers/locale_helper';
-
-describe('ContributorsStatGraph', () => {
-  describe('change_date_header', () => {
-    beforeAll(() => {
-      setLanguage('de');
-    });
-
-    afterAll(() => {
-      setLanguage(null);
-    });
-
-    it('uses the locale to display date ranges', () => {
-      ContributorsGraph.init_x_domain([{ date: '2013-01-31' }, { date: '2012-01-31' }]);
-      setFixtures('<div id="date_header"></div>');
-      const graph = new ContributorsStatGraph();
-
-      graph.change_date_header();
-
-      expect(document.getElementById('date_header').innerText).toBe(
-        '31. Januar 2012 – 31. Januar 2013',
-      );
-    });
-  });
-});
diff --git a/spec/javascripts/graphs/stat_graph_contributors_util_spec.js b/spec/javascripts/graphs/stat_graph_contributors_util_spec.js
deleted file mode 100644
index 511b660c671..00000000000
--- a/spec/javascripts/graphs/stat_graph_contributors_util_spec.js
+++ /dev/null
@@ -1,298 +0,0 @@
-/* eslint-disable no-var, camelcase, vars-on-top */
-
-import ContributorsStatGraphUtil from '~/pages/projects/graphs/show/stat_graph_contributors_util';
-
-describe('ContributorsStatGraphUtil', function() {
-  describe('#parse_log', function() {
-    it('returns a correctly parsed log', function() {
-      var fake_log = [
-        {
-          author_email: 'karlo@email.com',
-          author_name: 'Karlo Soriano',
-          date: '2013-05-09',
-          additions: 471,
-        },
-        {
-          author_email: 'dzaporozhets@email.com',
-          author_name: 'Dmitriy Zaporozhets',
-          date: '2013-05-08',
-          additions: 6,
-          deletions: 1,
-        },
-        {
-          author_email: 'dzaporozhets@email.com',
-          author_name: 'Dmitriy Zaporozhets',
-          date: '2013-05-08',
-          additions: 19,
-          deletions: 3,
-        },
-        {
-          author_email: 'dzaporozhets@email.com',
-          author_name: 'Dmitriy Zaporozhets',
-          date: '2013-05-08',
-          additions: 29,
-          deletions: 3,
-        },
-      ];
-
-      var correct_parsed_log = {
-        total: [
-          { date: '2013-05-09', additions: 471, deletions: 0, commits: 1 },
-          { date: '2013-05-08', additions: 54, deletions: 7, commits: 3 },
-        ],
-        by_author: [
-          {
-            author_name: 'Karlo Soriano',
-            author_email: 'karlo@email.com',
-            '2013-05-09': { date: '2013-05-09', additions: 471, deletions: 0, commits: 1 },
-          },
-          {
-            author_name: 'Dmitriy Zaporozhets',
-            author_email: 'dzaporozhets@email.com',
-            '2013-05-08': { date: '2013-05-08', additions: 54, deletions: 7, commits: 3 },
-          },
-        ],
-      };
-
-      expect(ContributorsStatGraphUtil.parse_log(fake_log)).toEqual(correct_parsed_log);
-    });
-  });
-
-  describe('#store_data', function() {
-    var fake_entry = { author: 'Karlo Soriano', date: '2013-05-09', additions: 471 };
-    var fake_total = {};
-    var fake_by_author = {};
-
-    it('calls #store_commits', function() {
-      spyOn(ContributorsStatGraphUtil, 'store_commits');
-      ContributorsStatGraphUtil.store_data(fake_entry, fake_total, fake_by_author);
-
-      expect(ContributorsStatGraphUtil.store_commits).toHaveBeenCalled();
-    });
-
-    it('calls #store_additions', function() {
-      spyOn(ContributorsStatGraphUtil, 'store_additions');
-      ContributorsStatGraphUtil.store_data(fake_entry, fake_total, fake_by_author);
-
-      expect(ContributorsStatGraphUtil.store_additions).toHaveBeenCalled();
-    });
-
-    it('calls #store_deletions', function() {
-      spyOn(ContributorsStatGraphUtil, 'store_deletions');
-      ContributorsStatGraphUtil.store_data(fake_entry, fake_total, fake_by_author);
-
-      expect(ContributorsStatGraphUtil.store_deletions).toHaveBeenCalled();
-    });
-  });
-
-  // TODO: fix or remove
-  // describe("#store_commits", function () {
-  //   var fake_total = "fake_total";
-  //   var fake_by_author = "fake_by_author";
-  //
-  //   it("calls #add twice with arguments fake_total and fake_by_author respectively", function () {
-  //     spyOn(ContributorsStatGraphUtil, 'add');
-  //     ContributorsStatGraphUtil.store_commits(fake_total, fake_by_author);
-  //     expect(ContributorsStatGraphUtil.add.argsForCall).toEqual([["fake_total", "commits", 1], ["fake_by_author", "commits", 1]]);
-  //   });
-  // });
-
-  describe('#add', function() {
-    it('adds 1 to current test_field in collection', function() {
-      var fake_collection = { test_field: 10 };
-      ContributorsStatGraphUtil.add(fake_collection, 'test_field', 1);
-
-      expect(fake_collection.test_field).toEqual(11);
-    });
-
-    it('inits and adds 1 if test_field in collection is not defined', function() {
-      var fake_collection = {};
-      ContributorsStatGraphUtil.add(fake_collection, 'test_field', 1);
-
-      expect(fake_collection.test_field).toEqual(1);
-    });
-  });
-
-  // TODO: fix or remove
-  // describe("#store_additions", function () {
-  //   var fake_entry = {additions: 10};
-  //   var fake_total= "fake_total";
-  //   var fake_by_author = "fake_by_author";
-  //   it("calls #add twice with arguments fake_total and fake_by_author respectively", function () {
-  //     spyOn(ContributorsStatGraphUtil, 'add');
-  //     ContributorsStatGraphUtil.store_additions(fake_entry, fake_total, fake_by_author);
-  //     expect(ContributorsStatGraphUtil.add.argsForCall).toEqual([["fake_total", "additions", 10], ["fake_by_author", "additions", 10]]);
-  //   });
-  // });
-
-  // TODO: fix or remove
-  // describe("#store_deletions", function () {
-  //   var fake_entry = {deletions: 10};
-  //   var fake_total= "fake_total";
-  //   var fake_by_author = "fake_by_author";
-  //   it("calls #add twice with arguments fake_total and fake_by_author respectively", function () {
-  //     spyOn(ContributorsStatGraphUtil, 'add');
-  //     ContributorsStatGraphUtil.store_deletions(fake_entry, fake_total, fake_by_author);
-  //     expect(ContributorsStatGraphUtil.add.argsForCall).toEqual([["fake_total", "deletions", 10], ["fake_by_author", "deletions", 10]]);
-  //   });
-  // });
-
-  describe('#add_date', function() {
-    it('adds a date field to the collection', function() {
-      var fake_date = '2013-10-02';
-      var fake_collection = {};
-      ContributorsStatGraphUtil.add_date(fake_date, fake_collection);
-
-      expect(fake_collection[fake_date].date).toEqual('2013-10-02');
-    });
-  });
-
-  describe('#add_author', function() {
-    it('adds an author field to the collection', function() {
-      var fake_author = { author_name: 'Author', author_email: 'fake@email.com' };
-      var fake_author_collection = {};
-      var fake_email_collection = {};
-      ContributorsStatGraphUtil.add_author(
-        fake_author,
-        fake_author_collection,
-        fake_email_collection,
-      );
-
-      expect(fake_author_collection[fake_author.author_name].author_name).toEqual('Author');
-      expect(fake_email_collection[fake_author.author_email].author_name).toEqual('Author');
-    });
-  });
-
-  describe('#get_total_data', function() {
-    it('returns the collection sorted via specified field', function() {
-      var fake_parsed_log = {
-        total: [
-          { date: '2013-05-09', additions: 471, deletions: 0, commits: 1 },
-          { date: '2013-05-08', additions: 54, deletions: 7, commits: 3 },
-        ],
-        by_author: [
-          {
-            author: 'Karlo Soriano',
-            '2013-05-09': { date: '2013-05-09', additions: 471, deletions: 0, commits: 1 },
-          },
-          {
-            author: 'Dmitriy Zaporozhets',
-            '2013-05-08': { date: '2013-05-08', additions: 54, deletions: 7, commits: 3 },
-          },
-        ],
-      };
-      var correct_total_data = [
-        { date: '2013-05-08', commits: 3 },
-        { date: '2013-05-09', commits: 1 },
-      ];
-
-      expect(ContributorsStatGraphUtil.get_total_data(fake_parsed_log, 'commits')).toEqual(
-        correct_total_data,
-      );
-    });
-  });
-
-  describe('#pick_field', function() {
-    it('returns the collection with only the specified field and date', function() {
-      var fake_parsed_log_total = [
-        { date: '2013-05-09', additions: 471, deletions: 0, commits: 1 },
-        { date: '2013-05-08', additions: 54, deletions: 7, commits: 3 },
-      ];
-      ContributorsStatGraphUtil.pick_field(fake_parsed_log_total, 'commits');
-      var correct_pick_field_data = [
-        { date: '2013-05-09', commits: 1 },
-        { date: '2013-05-08', commits: 3 },
-      ];
-
-      expect(ContributorsStatGraphUtil.pick_field(fake_parsed_log_total, 'commits')).toEqual(
-        correct_pick_field_data,
-      );
-    });
-  });
-
-  describe('#get_author_data', function() {
-    it('returns the log by author sorted by specified field', function() {
-      var fake_parsed_log = {
-        total: [
-          { date: '2013-05-09', additions: 471, deletions: 0, commits: 1 },
-          { date: '2013-05-08', additions: 54, deletions: 7, commits: 3 },
-        ],
-        by_author: [
-          {
-            author_name: 'Karlo Soriano',
-            author_email: 'karlo@email.com',
-            '2013-05-09': { date: '2013-05-09', additions: 471, deletions: 0, commits: 1 },
-          },
-          {
-            author_name: 'Dmitriy Zaporozhets',
-            author_email: 'dzaporozhets@email.com',
-            '2013-05-08': { date: '2013-05-08', additions: 54, deletions: 7, commits: 3 },
-          },
-        ],
-      };
-      var correct_author_data = [
-        {
-          author_name: 'Dmitriy Zaporozhets',
-          author_email: 'dzaporozhets@email.com',
-          dates: { '2013-05-08': 3 },
-          deletions: 7,
-          additions: 54,
-          commits: 3,
-        },
-        {
-          author_name: 'Karlo Soriano',
-          author_email: 'karlo@email.com',
-          dates: { '2013-05-09': 1 },
-          deletions: 0,
-          additions: 471,
-          commits: 1,
-        },
-      ];
-
-      expect(ContributorsStatGraphUtil.get_author_data(fake_parsed_log, 'commits')).toEqual(
-        correct_author_data,
-      );
-    });
-  });
-
-  describe('#parse_log_entry', function() {
-    it('adds the corresponding info from the log entry to the author', function() {
-      var fake_log_entry = {
-        author_name: 'Karlo Soriano',
-        author_email: 'karlo@email.com',
-        '2013-05-09': { date: '2013-05-09', additions: 471, deletions: 0, commits: 1 },
-      };
-      var correct_parsed_log = {
-        author_name: 'Karlo Soriano',
-        author_email: 'karlo@email.com',
-        dates: { '2013-05-09': 1 },
-        deletions: 0,
-        additions: 471,
-        commits: 1,
-      };
-
-      expect(ContributorsStatGraphUtil.parse_log_entry(fake_log_entry, 'commits', null)).toEqual(
-        correct_parsed_log,
-      );
-    });
-  });
-
-  describe('#in_range', function() {
-    var date = '2013-05-09';
-    it('returns true if date_range is null', function() {
-      expect(ContributorsStatGraphUtil.in_range(date, null)).toEqual(true);
-    });
-
-    it('returns true if date is in range', function() {
-      var date_range = [new Date('2013-01-01'), new Date('2013-12-12')];
-
-      expect(ContributorsStatGraphUtil.in_range(date, date_range)).toEqual(true);
-    });
-
-    it('returns false if date is not in range', function() {
-      var date_range = [new Date('1999-12-01'), new Date('2000-12-01')];
-
-      expect(ContributorsStatGraphUtil.in_range(date, date_range)).toEqual(false);
-    });
-  });
-});
diff --git a/spec/lib/gitlab/ci/config/entry/default_spec.rb b/spec/lib/gitlab/ci/config/entry/default_spec.rb
index 27d63dbd407..f09df698f68 100644
--- a/spec/lib/gitlab/ci/config/entry/default_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/default_spec.rb
@@ -5,6 +5,18 @@ require 'spec_helper'
 describe Gitlab::Ci::Config::Entry::Default do
   let(:entry) { described_class.new(config) }
 
+  it_behaves_like 'with inheritable CI config' do
+    let(:inheritable_key) { nil }
+    let(:inheritable_class) { Gitlab::Ci::Config::Entry::Root }
+
+    # These are entries defined in Root
+    # that we know that we don't want to inherit
+    # as they do not have sense in context of Default
+    let(:ignored_inheritable_columns) do
+      %i[default include variables stages types]
+    end
+  end
+
   describe '.nodes' do
     it 'returns a hash' do
       expect(described_class.nodes).to be_a(Hash)
@@ -87,7 +99,7 @@ describe Gitlab::Ci::Config::Entry::Default do
 
       it 'raises error' do
         expect { entry.compose!(deps) }.to raise_error(
-          Gitlab::Ci::Config::Entry::Default::DuplicateError)
+          Gitlab::Ci::Config::Entry::Default::InheritError)
       end
     end
 
diff --git a/spec/lib/gitlab/ci/config/entry/job_spec.rb b/spec/lib/gitlab/ci/config/entry/job_spec.rb
index 1c4887e87c4..d3eb5a9663f 100644
--- a/spec/lib/gitlab/ci/config/entry/job_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/job_spec.rb
@@ -5,6 +5,18 @@ require 'spec_helper'
 describe Gitlab::Ci::Config::Entry::Job do
   let(:entry) { described_class.new(config, name: :rspec) }
 
+  it_behaves_like 'with inheritable CI config' do
+    let(:inheritable_key) { 'default' }
+    let(:inheritable_class) { Gitlab::Ci::Config::Entry::Default }
+
+    # These are entries defined in Default
+    # that we know that we don't want to inherit
+    # as they do not have sense in context of Job
+    let(:ignored_inheritable_columns) do
+      %i[]
+    end
+  end
+
   describe '.nodes' do
     context 'when filtering all the entry/node names' do
       subject { described_class.nodes.keys }
diff --git a/spec/lib/gitlab/ci/config/entry/root_spec.rb b/spec/lib/gitlab/ci/config/entry/root_spec.rb
index 7e1a80414d4..8243fcfd162 100644
--- a/spec/lib/gitlab/ci/config/entry/root_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/root_spec.rb
@@ -12,6 +12,11 @@ describe Gitlab::Ci::Config::Entry::Root do
 
     context 'when filtering all the entry/node names' do
       it 'contains the expected node names' do
+        # No inheritable fields should be added to the `Root`
+        #
+        # Inheritable configuration can only be added to `default:`
+        #
+        # The purpose of `Root` is have only globally defined configuration.
         expect(described_class.nodes.keys)
           .to match_array(%i[before_script image services
                              after_script variables cache
diff --git a/spec/lib/gitlab/import_export/all_models.yml b/spec/lib/gitlab/import_export/all_models.yml
index 2e3bc4606b9..3b665d95004 100644
--- a/spec/lib/gitlab/import_export/all_models.yml
+++ b/spec/lib/gitlab/import_export/all_models.yml
@@ -29,6 +29,7 @@ issues:
 - prometheus_alerts
 - prometheus_alert_events
 - self_managed_prometheus_alert_events
+- zoom_meetings
 events:
 - author
 - project
@@ -529,4 +530,6 @@ versions: &version
 - issue
 - designs
 - actions
+zoom_meetings:
+- issue
 design_versions: *version
diff --git a/spec/lib/gitlab/import_export/project_tree_restorer_spec.rb b/spec/lib/gitlab/import_export/project_tree_restorer_spec.rb
index ebd2c6089ce..88a7fbea1d1 100644
--- a/spec/lib/gitlab/import_export/project_tree_restorer_spec.rb
+++ b/spec/lib/gitlab/import_export/project_tree_restorer_spec.rb
@@ -211,6 +211,13 @@ describe Gitlab::ImportExport::ProjectTreeRestorer do
         expect(CustomIssueTrackerService.first).not_to be_nil
       end
 
+      it 'restores zoom meetings' do
+        meetings = @project.issues.first.zoom_meetings
+
+        expect(meetings.count).to eq(1)
+        expect(meetings.first.url).to eq('https://zoom.us/j/123456789')
+      end
+
       context 'Merge requests' do
         it 'always has the new project as a target' do
           expect(MergeRequest.find_by_title('MR1').target_project).to eq(@project)
diff --git a/spec/lib/gitlab/import_export/safe_model_attributes.yml b/spec/lib/gitlab/import_export/safe_model_attributes.yml
index ede8eb4b2bd..3835b23123f 100644
--- a/spec/lib/gitlab/import_export/safe_model_attributes.yml
+++ b/spec/lib/gitlab/import_export/safe_model_attributes.yml
@@ -753,3 +753,11 @@ DesignManagement::Version:
 - sha
 - issue_id
 - author_id
+ZoomMeeting:
+- id
+- issue_id
+- project_id
+- issue_status
+- url
+- created_at
+- updated_at
diff --git a/spec/services/issues/update_service_spec.rb b/spec/services/issues/update_service_spec.rb
index 1eec3b97ea1..21e308e6636 100644
--- a/spec/services/issues/update_service_spec.rb
+++ b/spec/services/issues/update_service_spec.rb
@@ -187,7 +187,6 @@ describe Issues::UpdateService, :mailer do
         it 'creates system note about issue reassign' do
           note = find_note('assigned to')
 
-          expect(note).not_to be_nil
           expect(note.note).to include "assigned to #{user2.to_reference}"
         end
 
@@ -202,14 +201,12 @@ describe Issues::UpdateService, :mailer do
         it 'creates system note about title change' do
           note = find_note('changed title')
 
-          expect(note).not_to be_nil
           expect(note.note).to eq 'changed title from **{-Old-} title** to **{+New+} title**'
         end
 
         it 'creates system note about discussion lock' do
           note = find_note('locked this issue')
 
-          expect(note).not_to be_nil
           expect(note.note).to eq 'locked this issue'
         end
       end
@@ -221,20 +218,10 @@ describe Issues::UpdateService, :mailer do
 
         note = find_note('changed the description')
 
-        expect(note).not_to be_nil
         expect(note.note).to eq('changed the description')
       end
     end
 
-    it 'creates zoom_link_added system note when a zoom link is added to the description' do
-      update_issue(description: 'Changed description https://zoom.us/j/5873603787')
-
-      note = find_note('added a Zoom call')
-
-      expect(note).not_to be_nil
-      expect(note.note).to eq('added a Zoom call to this issue')
-    end
-
     context 'when issue turns confidential' do
       let(:opts) do
         {
@@ -252,7 +239,6 @@ describe Issues::UpdateService, :mailer do
 
         note = find_note('made the issue confidential')
 
-        expect(note).not_to be_nil
         expect(note.note).to eq 'made the issue confidential'
       end
 
diff --git a/spec/services/issues/zoom_link_service_spec.rb b/spec/services/issues/zoom_link_service_spec.rb
index ba3f007c917..ecca9467965 100644
--- a/spec/services/issues/zoom_link_service_spec.rb
+++ b/spec/services/issues/zoom_link_service_spec.rb
@@ -14,27 +14,16 @@ describe Issues::ZoomLinkService do
     project.add_reporter(user)
   end
 
-  shared_context 'with Zoom link' do
+  shared_context '"added" Zoom meeting' do
     before do
-      issue.update!(description: "Description\n\n#{zoom_link}")
+      create(:zoom_meeting, issue: issue)
     end
   end
 
-  shared_context 'with Zoom link not at the end' do
+  shared_context '"removed" zoom meetings' do
     before do
-      issue.update!(description: "Description with #{zoom_link} some where")
-    end
-  end
-
-  shared_context 'without Zoom link' do
-    before do
-      issue.update!(description: "Description\n\nhttp://example.com")
-    end
-  end
-
-  shared_context 'without issue description' do
-    before do
-      issue.update!(description: nil)
+      create(:zoom_meeting, issue: issue, issue_status: :removed)
+      create(:zoom_meeting, issue: issue, issue_status: :removed)
     end
   end
 
@@ -45,11 +34,10 @@ describe Issues::ZoomLinkService do
   end
 
   describe '#add_link' do
-    shared_examples 'can add link' do
-      it 'appends the link to issue description' do
+    shared_examples 'can add meeting' do
+      it 'appends the new meeting to zoom_meetings' do
         expect(result).to be_success
-        expect(result.payload[:description])
-          .to eq("#{issue.description}\n\n#{zoom_link}")
+        expect(ZoomMeeting.canonical_meeting_url(issue)).to eq(zoom_link)
       end
 
       it 'tracks the add event' do
@@ -57,55 +45,63 @@ describe Issues::ZoomLinkService do
           .with('IncidentManagement::ZoomIntegration', 'add_zoom_meeting', label: 'Issue ID', value: issue.id)
         result
       end
+
+      it 'creates a zoom_link_added notification' do
+        expect(SystemNoteService).to receive(:zoom_link_added).with(issue, project, user)
+        expect(SystemNoteService).not_to receive(:zoom_link_removed)
+        result
+      end
     end
 
-    shared_examples 'cannot add link' do
-      it 'cannot add the link' do
+    shared_examples 'cannot add meeting' do
+      it 'cannot add the meeting' do
         expect(result).to be_error
         expect(result.message).to eq('Failed to add a Zoom meeting')
       end
+
+      it 'creates no notification' do
+        expect(SystemNoteService).not_to receive(:zoom_link_added)
+        expect(SystemNoteService).not_to receive(:zoom_link_removed)
+        result
+      end
     end
 
     subject(:result) { service.add_link(zoom_link) }
 
-    context 'without Zoom link in the issue description' do
-      include_context 'without Zoom link'
-      include_examples 'can add link'
+    context 'without existing Zoom meeting' do
+      include_examples 'can add meeting'
 
-      context 'with invalid Zoom link' do
+      context 'with invalid Zoom url' do
         let(:zoom_link) { 'https://not-zoom.link' }
 
-        include_examples 'cannot add link'
+        include_examples 'cannot add meeting'
       end
 
       context 'with insufficient permissions' do
         include_context 'insufficient permissions'
-        include_examples 'cannot add link'
+        include_examples 'cannot add meeting'
       end
     end
 
-    context 'with Zoom link in the issue description' do
-      include_context 'with Zoom link'
-      include_examples 'cannot add link'
+    context 'with "added" Zoom meeting' do
+      include_context '"added" Zoom meeting'
+      include_examples 'cannot add meeting'
+    end
 
-      context 'but not at the end' do
-        include_context 'with Zoom link not at the end'
-        include_examples 'can add link'
+    context 'with "added" Zoom meeting and race condition' do
+      include_context '"added" Zoom meeting'
+      before do
+        allow(service).to receive(:can_add_link?).and_return(true)
       end
-    end
 
-    context 'without issue description' do
-      include_context 'without issue description'
-      include_examples 'can add link'
+      include_examples 'cannot add meeting'
     end
   end
 
   describe '#can_add_link?' do
     subject { service.can_add_link? }
 
-    context 'without Zoom link in the issue description' do
-      include_context 'without Zoom link'
-
+    context 'without "added" zoom meeting' do
       it { is_expected.to eq(true) }
 
       context 'with insufficient permissions' do
@@ -115,81 +111,93 @@ describe Issues::ZoomLinkService do
       end
     end
 
-    context 'with Zoom link in the issue description' do
-      include_context 'with Zoom link'
+    context 'with Zoom meeting in the issue description' do
+      include_context  '"added" Zoom meeting'
 
       it { is_expected.to eq(false) }
     end
   end
 
   describe '#remove_link' do
-    shared_examples 'cannot remove link' do
-      it 'cannot remove the link' do
+    shared_examples 'cannot remove meeting' do
+      it 'cannot remove the meeting' do
         expect(result).to be_error
         expect(result.message).to eq('Failed to remove a Zoom meeting')
       end
-    end
 
-    subject(:result) { service.remove_link }
+      it 'creates no notification' do
+        expect(SystemNoteService).not_to receive(:zoom_link_added)
+        expect(SystemNoteService).not_to receive(:zoom_link_removed)
+        result
+      end
+    end
 
-    context 'with Zoom link in the issue description' do
-      include_context 'with Zoom link'
+    shared_examples 'can remove meeting' do
+      it 'creates no notification' do
+        expect(SystemNoteService).not_to receive(:zoom_link_added).with(issue, project, user)
+        expect(SystemNoteService).to receive(:zoom_link_removed)
+        result
+      end
 
-      it 'removes the link from the issue description' do
+      it 'can remove the meeting' do
         expect(result).to be_success
-        expect(result.payload[:description])
-          .to eq(issue.description.delete_suffix("\n\n#{zoom_link}"))
+        expect(ZoomMeeting.canonical_meeting_url(issue)).to eq(nil)
       end
 
       it 'tracks the remove event' do
         expect(Gitlab::Tracking).to receive(:event)
-          .with('IncidentManagement::ZoomIntegration', 'remove_zoom_meeting', label: 'Issue ID', value: issue.id)
-
+        .with('IncidentManagement::ZoomIntegration', 'remove_zoom_meeting', label: 'Issue ID', value: issue.id)
         result
       end
+    end
 
-      context 'with insufficient permissions' do
-        include_context 'insufficient permissions'
-        include_examples 'cannot remove link'
-      end
+    subject(:result) { service.remove_link }
 
-      context 'but not at the end' do
-        include_context 'with Zoom link not at the end'
-        include_examples 'cannot remove link'
+    context 'with Zoom meeting' do
+      include_context '"added" Zoom meeting'
+
+      context 'removes the link' do
+        include_examples 'can remove meeting'
       end
-    end
 
-    context 'without Zoom link in the issue description' do
-      include_context 'without Zoom link'
-      include_examples 'cannot remove link'
+      context 'with insufficient permissions' do
+        include_context 'insufficient permissions'
+        include_examples 'cannot remove meeting'
+      end
     end
 
-    context 'without issue description' do
-      include_context 'without issue description'
-      include_examples 'cannot remove link'
+    context 'without "added" Zoom meeting' do
+      include_context '"removed" zoom meetings'
+      include_examples 'cannot remove meeting'
     end
   end
 
   describe '#can_remove_link?' do
     subject { service.can_remove_link? }
 
-    context 'with Zoom link in the issue description' do
-      include_context 'with Zoom link'
+    context 'without Zoom meeting' do
+      it { is_expected.to eq(false) }
+    end
+
+    context 'with only "removed" zoom meetings' do
+      include_context '"removed" zoom meetings'
+      it { is_expected.to eq(false) }
+    end
 
+    context 'with "added" Zoom meeting' do
+      include_context '"added" Zoom meeting'
       it { is_expected.to eq(true) }
 
+      context 'with "removed" zoom meetings' do
+        include_context '"removed" zoom meetings'
+        it { is_expected.to eq(true) }
+      end
+
       context 'with insufficient permissions' do
         include_context 'insufficient permissions'
-
         it { is_expected.to eq(false) }
       end
     end
-
-    context 'without Zoom link in the issue description' do
-      include_context 'without Zoom link'
-
-      it { is_expected.to eq(false) }
-    end
   end
 
   describe '#parse_link' do
diff --git a/spec/services/zoom_notes_service_spec.rb b/spec/services/zoom_notes_service_spec.rb
deleted file mode 100644
index 419ecf3f374..00000000000
--- a/spec/services/zoom_notes_service_spec.rb
+++ /dev/null
@@ -1,81 +0,0 @@
-# frozen_string_literal: true
-
-require 'spec_helper'
-
-describe ZoomNotesService do
-  describe '#execute' do
-    let(:issue) { OpenStruct.new(description: description) }
-    let(:project) { Object.new }
-    let(:user) { Object.new }
-    let(:description) { 'an issue description' }
-    let(:old_description) { nil }
-
-    subject { described_class.new(issue, project, user, old_description: old_description) }
-
-    shared_examples 'no notifications' do
-      it "doesn't create notifications" do
-        expect(SystemNoteService).not_to receive(:zoom_link_added)
-        expect(SystemNoteService).not_to receive(:zoom_link_removed)
-
-        subject.execute
-      end
-    end
-
-    it_behaves_like 'no notifications'
-
-    context 'when the zoom link exists in both description and old_description' do
-      let(:description) { 'a changed issue description https://zoom.us/j/123' }
-      let(:old_description) { 'an issue description https://zoom.us/j/123' }
-
-      it_behaves_like 'no notifications'
-    end
-
-    context "when the zoom link doesn't exist in both description and old_description" do
-      let(:description) { 'a changed issue description' }
-      let(:old_description) { 'an issue description' }
-
-      it_behaves_like 'no notifications'
-    end
-
-    context 'when description == old_description' do
-      let(:old_description) { 'an issue description' }
-
-      it_behaves_like 'no notifications'
-    end
-
-    context 'when the description contains a zoom link and old_description is nil' do
-      let(:description) { 'a changed issue description https://zoom.us/j/123' }
-
-      it 'creates a zoom_link_added notification' do
-        expect(SystemNoteService).to receive(:zoom_link_added).with(issue, project, user)
-        expect(SystemNoteService).not_to receive(:zoom_link_removed)
-
-        subject.execute
-      end
-    end
-
-    context 'when the zoom link has been added to the description' do
-      let(:description) { 'a changed issue description https://zoom.us/j/123' }
-      let(:old_description) { 'an issue description' }
-
-      it 'creates a zoom_link_added notification' do
-        expect(SystemNoteService).to receive(:zoom_link_added).with(issue, project, user)
-        expect(SystemNoteService).not_to receive(:zoom_link_removed)
-
-        subject.execute
-      end
-    end
-
-    context 'when the zoom link has been removed from the description' do
-      let(:description) { 'a changed issue description' }
-      let(:old_description) { 'an issue description https://zoom.us/j/123' }
-
-      it 'creates a zoom_link_removed notification' do
-        expect(SystemNoteService).not_to receive(:zoom_link_added).with(issue, project, user)
-        expect(SystemNoteService).to receive(:zoom_link_removed)
-
-        subject.execute
-      end
-    end
-  end
-end
diff --git a/spec/support/shared_examples/lib/gitlab/config/inheritable_shared_examples.rb b/spec/support/shared_examples/lib/gitlab/config/inheritable_shared_examples.rb
new file mode 100644
index 00000000000..556d81133bc
--- /dev/null
+++ b/spec/support/shared_examples/lib/gitlab/config/inheritable_shared_examples.rb
@@ -0,0 +1,105 @@
+# frozen_string_literal: true
+
+RSpec.shared_examples 'with inheritable CI config' do
+  using RSpec::Parameterized::TableSyntax
+
+  let(:ignored_inheritable_columns) { [] }
+
+  it 'does prepend an Inheritable mixin' do
+    expect(described_class).to include_module(Gitlab::Config::Entry::Inheritable)
+  end
+
+  it 'all inheritable entries are covered' do
+    inheritable_entries = inheritable_class.nodes.keys
+    entries = described_class.nodes.keys
+
+    expect(entries + ignored_inheritable_columns).to include(
+      *inheritable_entries)
+  end
+
+  it 'all entries do have inherit flag' do
+    without_inherit_flag = described_class.nodes.map do |key, factory|
+      key if factory.inherit.nil?
+    end.compact
+
+    expect(without_inherit_flag).to be_empty
+  end
+
+  context 'for non-inheritable entries' do
+    where(:entry_key) do
+      described_class.nodes.map do |key, factory|
+        [key] unless factory.inherit
+      end.compact
+    end
+
+    with_them do
+      it 'inheritable_class does not define entry' do
+        expect(inheritable_class.nodes).not_to include(entry_key)
+      end
+    end
+  end
+
+  context 'for inheritable entries' do
+    where(:entry_key, :entry_class) do
+      described_class.nodes.map do |key, factory|
+        [key, factory.entry_class] if factory.inherit
+      end.compact
+    end
+
+    with_them do
+      let(:specified) { double('deps_specified', 'specified?' => true, value: 'specified') }
+      let(:unspecified) { double('unspecified', 'specified?' => false) }
+      let(:inheritable) { double(inheritable_key, '[]' => unspecified) }
+
+      let(:deps) do
+        if inheritable_key
+          double('deps', inheritable_key => inheritable, '[]' => unspecified)
+        else
+          inheritable
+        end
+      end
+
+      it 'inheritable_class does define entry' do
+        expect(inheritable_class.nodes).to include(entry_key)
+        expect(inheritable_class.nodes[entry_key].entry_class).to eq(entry_class)
+      end
+
+      context 'when is specified' do
+        it 'does inherit value' do
+          expect(inheritable).to receive('[]').with(entry_key).and_return(specified)
+
+          entry.compose!(deps)
+
+          expect(entry[entry_key]).to eq(specified)
+        end
+
+        context 'when entry is specified' do
+          let(:entry_specified) do
+            double('entry_specified', 'specified?' => true, value: 'specified', errors: [])
+          end
+
+          it 'does not inherit value' do
+            entry.send(:entries)[entry_key] = entry_specified
+
+            allow(inheritable).to receive('[]').with(entry_key).and_return(specified)
+
+            expect do
+              # we ignore exceptions as `#overwrite_entry`
+              # can raise exception on duplicates
+              entry.compose!(deps) rescue described_class::InheritError
+            end.not_to change { entry[entry_key] }
+          end
+        end
+      end
+
+      context 'when inheritable does not specify' do
+        it 'does not inherit value' do
+          entry.compose!(deps)
+
+          expect(entry[entry_key]).to be_a(
+            Gitlab::Config::Entry::Undefined)
+        end
+      end
+    end
+  end
+end
diff --git a/spec/support/shared_examples/quick_actions/issue/zoom_quick_actions_shared_examples.rb b/spec/support/shared_examples/quick_actions/issue/zoom_quick_actions_shared_examples.rb
index b4a8e3fca4d..92bbc4abe77 100644
--- a/spec/support/shared_examples/quick_actions/issue/zoom_quick_actions_shared_examples.rb
+++ b/spec/support/shared_examples/quick_actions/issue/zoom_quick_actions_shared_examples.rb
@@ -2,22 +2,19 @@
 
 shared_examples 'zoom quick actions' do
   let(:zoom_link) { 'https://zoom.us/j/123456789' }
+  let(:existing_zoom_link) { 'https://zoom.us/j/123456780' }
   let(:invalid_zoom_link) { 'https://invalid-zoom' }
 
-  before do
-    issue.update!(description: description)
-  end
-
   describe '/zoom' do
     shared_examples 'skip silently' do
-      it 'skip addition silently' do
+      it 'skips addition silently' do
         add_note("/zoom #{zoom_link}")
 
         wait_for_requests
 
         expect(page).not_to have_content('Zoom meeting added')
         expect(page).not_to have_content('Failed to add a Zoom meeting')
-        expect(issue.reload.description).to eq(description)
+        expect(ZoomMeeting.canonical_meeting_url(issue.reload)).not_to eq(zoom_link)
       end
     end
 
@@ -28,13 +25,11 @@ shared_examples 'zoom quick actions' do
         wait_for_requests
 
         expect(page).to have_content('Zoom meeting added')
-        expect(issue.reload.description).to end_with(zoom_link)
+        expect(ZoomMeeting.canonical_meeting_url(issue.reload)).to eq(zoom_link)
       end
     end
 
-    context 'without issue description' do
-      let(:description) { nil }
-
+    context 'without zoom_meetings' do
       include_examples 'success'
 
       it 'cannot add invalid zoom link' do
@@ -47,14 +42,18 @@ shared_examples 'zoom quick actions' do
       end
     end
 
-    context 'with Zoom link not at the end of the issue description' do
-      let(:description) { "A link #{zoom_link} not at the end" }
+    context 'with "removed" zoom meeting' do
+      before do
+        create(:zoom_meeting, issue_status: :removed, url: existing_zoom_link, issue: issue)
+      end
 
       include_examples 'success'
     end
 
-    context 'with Zoom link at end of the issue description' do
-      let(:description) { "Text\n#{zoom_link}" }
+    context 'with "added" zoom meeting' do
+      before do
+        create(:zoom_meeting, issue_status: :added, url: existing_zoom_link, issue: issue)
+      end
 
       include_examples 'skip silently'
     end
@@ -62,19 +61,19 @@ shared_examples 'zoom quick actions' do
 
   describe '/remove_zoom' do
     shared_examples 'skip silently' do
-      it 'skip removal silently' do
+      it 'skips removal silently' do
         add_note('/remove_zoom')
 
         wait_for_requests
 
         expect(page).not_to have_content('Zoom meeting removed')
         expect(page).not_to have_content('Failed to remove a Zoom meeting')
-        expect(issue.reload.description).to eq(description)
+        expect(ZoomMeeting.canonical_meeting_url(issue.reload)).to be_nil
       end
     end
 
-    context 'with Zoom link in the description' do
-      let(:description) { "Text with #{zoom_link}\n\n\n#{zoom_link}" }
+    context 'with added zoom meeting' do
+      let!(:added_zoom_meeting) { create(:zoom_meeting, url: zoom_link, issue: issue, issue_status: :added) }
 
       it 'removes last Zoom link' do
         add_note('/remove_zoom')
@@ -82,14 +81,8 @@ shared_examples 'zoom quick actions' do
         wait_for_requests
 
         expect(page).to have_content('Zoom meeting removed')
-        expect(issue.reload.description).to eq("Text with #{zoom_link}")
+        expect(ZoomMeeting.canonical_meeting_url(issue.reload)).to be_nil
       end
     end
-
-    context 'with a Zoom link not at the end of the description' do
-      let(:description) { "A link #{zoom_link} not at the end" }
-
-      include_examples 'skip silently'
-    end
   end
 end