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import { GlAlert } from '@gitlab/ui';
import { GlAreaChart } from '@gitlab/ui/dist/charts';
import { shallowMount } from '@vue/test-utils';
import Vue, { nextTick } from 'vue';
import VueApollo from 'vue-apollo';
import createMockApollo from 'helpers/mock_apollo_helper';
import waitForPromises from 'helpers/wait_for_promises';
import UsersChart from '~/analytics/usage_trends/components/users_chart.vue';
import usersQuery from '~/analytics/usage_trends/graphql/queries/users.query.graphql';
import ChartSkeletonLoader from '~/vue_shared/components/resizable_chart/skeleton_loader.vue';
import { mockQueryResponse } from '../apollo_mock_data';
import {
mockCountsData1,
mockCountsData2,
roundedSortedCountsMonthlyChartData2,
} from '../mock_data';
Vue.use(VueApollo);
describe('UsersChart', () => {
let wrapper;
let queryHandler;
const createComponent = ({
loadingError = false,
loading = false,
users = [],
additionalData = [],
} = {}) => {
queryHandler = mockQueryResponse({ key: 'users', data: users, loading, additionalData });
return shallowMount(UsersChart, {
props: {
startDate: new Date(2020, 9, 26),
endDate: new Date(2020, 10, 1),
totalDataPoints: mockCountsData2.length,
},
apolloProvider: createMockApollo([[usersQuery, queryHandler]]),
data() {
return { loadingError };
},
});
};
const findLoader = () => wrapper.findComponent(ChartSkeletonLoader);
const findAlert = () => wrapper.findComponent(GlAlert);
const findChart = () => wrapper.findComponent(GlAreaChart);
describe('while loading', () => {
beforeEach(() => {
wrapper = createComponent({ loading: true });
});
it('displays the skeleton loader', () => {
expect(findLoader().exists()).toBe(true);
});
it('hides the chart', () => {
expect(findChart().exists()).toBe(false);
});
});
describe('without data', () => {
beforeEach(async () => {
wrapper = createComponent({ users: [] });
await nextTick();
});
it('renders an no data message', () => {
expect(findAlert().text()).toBe('There is no data available.');
});
it('hides the skeleton loader', () => {
expect(findLoader().exists()).toBe(false);
});
it('renders the chart', () => {
expect(findChart().exists()).toBe(false);
});
});
describe('with data', () => {
beforeEach(async () => {
wrapper = createComponent({ users: mockCountsData2 });
await waitForPromises();
});
it('hides the skeleton loader', () => {
expect(findLoader().exists()).toBe(false);
});
it('renders the chart', () => {
expect(findChart().exists()).toBe(true);
});
it('passes the data to the line chart', () => {
expect(findChart().props('data')).toEqual([
{ data: roundedSortedCountsMonthlyChartData2, name: 'Total users' },
]);
});
});
describe('with errors', () => {
beforeEach(async () => {
wrapper = createComponent({ loadingError: true });
await nextTick();
});
it('renders an error message', () => {
expect(findAlert().text()).toBe(
'Could not load the user chart. Please refresh the page to try again.',
);
});
it('hides the skeleton loader', () => {
expect(findLoader().exists()).toBe(false);
});
it('renders the chart', () => {
expect(findChart().exists()).toBe(false);
});
});
describe('when fetching more data', () => {
describe('when the fetchMore query returns data', () => {
beforeEach(async () => {
wrapper = createComponent({
users: mockCountsData2,
additionalData: mockCountsData1,
});
jest.spyOn(wrapper.vm.$apollo.queries.users, 'fetchMore');
await nextTick();
});
it('requests data twice', () => {
expect(queryHandler).toHaveBeenCalledTimes(2);
});
it('calls fetchMore', () => {
expect(wrapper.vm.$apollo.queries.users.fetchMore).toHaveBeenCalledTimes(1);
});
});
describe('when the fetchMore query throws an error', () => {
beforeEach(async () => {
wrapper = createComponent({
users: mockCountsData2,
additionalData: mockCountsData1,
});
jest
.spyOn(wrapper.vm.$apollo.queries.users, 'fetchMore')
.mockImplementation(jest.fn().mockRejectedValue());
await waitForPromises();
});
it('calls fetchMore', () => {
expect(wrapper.vm.$apollo.queries.users.fetchMore).toHaveBeenCalledTimes(1);
});
it('renders an error message', () => {
expect(findAlert().text()).toBe(
'Could not load the user chart. Please refresh the page to try again.',
);
});
});
});
});
|
