Load participants async

1 files changed, 174 insertions, 0 deletions

diff --git a/spec/javascripts/sidebar/participants_spec.js b/spec/javascripts/sidebar/participants_spec.js
new file mode 100644
index 00000000000..30cc549c7c0
--- /dev/null
+++ b/spec/javascripts/sidebar/participants_spec.js
@@ -0,0 +1,174 @@
+import Vue from 'vue';
+import participants from '~/sidebar/components/participants/participants.vue';
+import mountComponent from '../helpers/vue_mount_component_helper';
+
+const PARTICIPANT = {
+  id: 1,
+  state: 'active',
+  username: 'marcene',
+  name: 'Allie Will',
+  web_url: 'foo.com',
+  avatar_url: 'gravatar.com/avatar/xxx',
+};
+
+const PARTICIPANT_LIST = [
+  PARTICIPANT,
+  { ...PARTICIPANT, id: 2 },
+  { ...PARTICIPANT, id: 3 },
+];
+
+describe('Participants', function () {
+  let vm;
+  let Participants;
+
+  beforeEach(() => {
+    Participants = Vue.extend(participants);
+  });
+
+  afterEach(() => {
+    vm.$destroy();
+  });
+
+  describe('collapsed sidebar state', () => {
+    it('shows loading spinner when loading', () => {
+      vm = mountComponent(Participants, {
+        loading: true,
+      });
+
+      expect(vm.$el.querySelector('.js-participants-collapsed-loading-icon')).toBeDefined();
+    });
+
+    it('shows participant count when given', () => {
+      vm = mountComponent(Participants, {
+        loading: false,
+        participants: PARTICIPANT_LIST,
+      });
+      const countEl = vm.$el.querySelector('.js-participants-collapsed-count');
+
+      expect(countEl.textContent.trim()).toBe(`${PARTICIPANT_LIST.length}`);
+    });
+
+    it('shows full participant count when there are hidden participants', () => {
+      vm = mountComponent(Participants, {
+        loading: false,
+        participants: PARTICIPANT_LIST,
+        numberOfLessParticipants: 1,
+      });
+      const countEl = vm.$el.querySelector('.js-participants-collapsed-count');
+
+      expect(countEl.textContent.trim()).toBe(`${PARTICIPANT_LIST.length}`);
+    });
+  });
+
+  describe('expanded sidebar state', () => {
+    it('shows loading spinner when loading', () => {
+      vm = mountComponent(Participants, {
+        loading: true,
+      });
+
+      expect(vm.$el.querySelector('.js-participants-expanded-loading-icon')).toBeDefined();
+    });
+
+    it('when only showing visible participants, shows an avatar only for each participant under the limit', (done) => {
+      const numberOfLessParticipants = 2;
+      vm = mountComponent(Participants, {
+        loading: false,
+        participants: PARTICIPANT_LIST,
+        numberOfLessParticipants,
+      });
+      vm.isShowingMoreParticipants = false;
+
+      Vue.nextTick()
+        .then(() => {
+          const participantEls = vm.$el.querySelectorAll('.js-participants-author');
+
+          expect(participantEls.length).toBe(numberOfLessParticipants);
+        })
+        .then(done)
+        .catch(done.fail);
+    });
+
+    it('when only showing all participants, each has an avatar', (done) => {
+      const numberOfLessParticipants = 2;
+      vm = mountComponent(Participants, {
+        loading: false,
+        participants: PARTICIPANT_LIST,
+        numberOfLessParticipants,
+      });
+      vm.isShowingMoreParticipants = true;
+
+      Vue.nextTick()
+        .then(() => {
+          const participantEls = vm.$el.querySelectorAll('.js-participants-author');
+
+          expect(participantEls.length).toBe(PARTICIPANT_LIST.length);
+        })
+        .then(done)
+        .catch(done.fail);
+    });
+
+    it('does not have more participants link when they can all be shown', () => {
+      const numberOfLessParticipants = 100;
+      vm = mountComponent(Participants, {
+        loading: false,
+        participants: PARTICIPANT_LIST,
+        numberOfLessParticipants,
+      });
+      const moreParticipantLink = vm.$el.querySelector('.js-toggle-participants-button');
+
+      expect(PARTICIPANT_LIST.length).toBeLessThan(numberOfLessParticipants);
+      expect(moreParticipantLink).toBeNull();
+    });
+
+    it('when too many participants, has more participants link to show more', (done) => {
+      vm = mountComponent(Participants, {
+        loading: false,
+        participants: PARTICIPANT_LIST,
+        numberOfLessParticipants: 2,
+      });
+      vm.isShowingMoreParticipants = false;
+
+      Vue.nextTick()
+        .then(() => {
+          const moreParticipantLink = vm.$el.querySelector('.js-toggle-participants-button');
+
+          expect(moreParticipantLink.textContent.trim()).toBe('+ 1 more');
+        })
+        .then(done)
+        .catch(done.fail);
+    });
+
+    it('when too many participants and already showing them, has more participants link to show less', (done) => {
+      vm = mountComponent(Participants, {
+        loading: false,
+        participants: PARTICIPANT_LIST,
+        numberOfLessParticipants: 2,
+      });
+      vm.isShowingMoreParticipants = true;
+
+      Vue.nextTick()
+        .then(() => {
+          const moreParticipantLink = vm.$el.querySelector('.js-toggle-participants-button');
+
+          expect(moreParticipantLink.textContent.trim()).toBe('- show less');
+        })
+        .then(done)
+        .catch(done.fail);
+    });
+
+    it('clicking more participants link emits event', () => {
+      vm = mountComponent(Participants, {
+        loading: false,
+        participants: PARTICIPANT_LIST,
+        numberOfLessParticipants: 2,
+      });
+      const moreParticipantLink = vm.$el.querySelector('.js-toggle-participants-button');
+
+      expect(vm.isShowingMoreParticipants).toBe(false);
+
+      moreParticipantLink.click();
+
+      expect(vm.isShowingMoreParticipants).toBe(true);
+    });
+  });
+});