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import { createLocalVue, shallowMount } from '@vue/test-utils';
import { GlLineChart } from '@gitlab/ui/dist/charts';
import { GlAlert } from '@gitlab/ui';
import VueApollo from 'vue-apollo';
import createMockApollo from 'jest/helpers/mock_apollo_helper';
import PipelinesChart from '~/analytics/instance_statistics/components/pipelines_chart.vue';
import pipelinesStatsQuery from '~/analytics/instance_statistics/graphql/queries/pipeline_stats.query.graphql';
import ChartSkeletonLoader from '~/vue_shared/components/resizable_chart/skeleton_loader.vue';
import { mockCountsData1, mockCountsData2 } from '../mock_data';
import { getApolloResponse } from '../apollo_mock_data';
const localVue = createLocalVue();
localVue.use(VueApollo);
describe('PipelinesChart', () => {
let wrapper;
let queryHandler;
const createApolloProvider = pipelineStatsHandler => {
return createMockApollo([[pipelinesStatsQuery, pipelineStatsHandler]]);
};
const createComponent = apolloProvider => {
return shallowMount(PipelinesChart, {
localVue,
apolloProvider,
});
};
afterEach(() => {
wrapper.destroy();
wrapper = null;
});
const findLoader = () => wrapper.find(ChartSkeletonLoader);
const findChart = () => wrapper.find(GlLineChart);
const findAlert = () => wrapper.find(GlAlert);
describe('while loading', () => {
beforeEach(() => {
queryHandler = jest.fn().mockReturnValue(new Promise(() => {}));
const apolloProvider = createApolloProvider(queryHandler);
wrapper = createComponent(apolloProvider);
});
it('requests data', () => {
expect(queryHandler).toBeCalledTimes(1);
});
it('displays the skeleton loader', () => {
expect(findLoader().exists()).toBe(true);
});
it('hides the chart', () => {
expect(findChart().exists()).toBe(false);
});
it('does not show an error', () => {
expect(findAlert().exists()).toBe(false);
});
});
describe('without data', () => {
beforeEach(() => {
const emptyResponse = getApolloResponse();
queryHandler = jest.fn().mockResolvedValue(emptyResponse);
const apolloProvider = createApolloProvider(queryHandler);
wrapper = createComponent(apolloProvider);
});
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(() => {
const response = getApolloResponse({
pipelinesTotal: mockCountsData1,
pipelinesSucceeded: mockCountsData2,
pipelinesFailed: mockCountsData2,
pipelinesCanceled: mockCountsData1,
pipelinesSkipped: mockCountsData1,
});
queryHandler = jest.fn().mockResolvedValue(response);
const apolloProvider = createApolloProvider(queryHandler);
wrapper = createComponent(apolloProvider);
});
it('requests data', () => {
expect(queryHandler).toBeCalledTimes(1);
});
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')).toMatchSnapshot();
});
it('does not show an error', () => {
expect(findAlert().exists()).toBe(false);
});
});
describe('when fetching more data', () => {
const recordedAt = '2020-08-01';
describe('when the fetchMore query returns data', () => {
beforeEach(async () => {
const newData = { recordedAt, count: 5 };
const firstResponse = getApolloResponse({
pipelinesTotal: mockCountsData2,
pipelinesSucceeded: mockCountsData2,
pipelinesFailed: mockCountsData1,
pipelinesCanceled: mockCountsData2,
pipelinesSkipped: mockCountsData2,
hasNextPage: true,
});
const secondResponse = getApolloResponse({
pipelinesTotal: [newData],
pipelinesSucceeded: [newData],
pipelinesFailed: [newData],
pipelinesCanceled: [newData],
pipelinesSkipped: [newData],
hasNextPage: false,
});
queryHandler = jest
.fn()
.mockResolvedValueOnce(firstResponse)
.mockResolvedValueOnce(secondResponse);
const apolloProvider = createApolloProvider(queryHandler);
wrapper = createComponent(apolloProvider);
await wrapper.vm.$nextTick();
});
it('requests data twice', () => {
expect(queryHandler).toBeCalledTimes(2);
});
it('passes the data to the line chart', () => {
expect(findChart().props('data')).toMatchSnapshot();
});
});
describe('when the fetchMore query throws an error', () => {
beforeEach(async () => {
const response = getApolloResponse({
pipelinesTotal: mockCountsData2,
pipelinesSucceeded: mockCountsData2,
pipelinesFailed: mockCountsData1,
pipelinesCanceled: mockCountsData2,
pipelinesSkipped: mockCountsData2,
hasNextPage: true,
});
queryHandler = jest.fn().mockResolvedValue(response);
const apolloProvider = createApolloProvider(queryHandler);
wrapper = createComponent(apolloProvider);
jest
.spyOn(wrapper.vm.$apollo.queries.pipelineStats, 'fetchMore')
.mockImplementation(jest.fn().mockRejectedValue());
await wrapper.vm.$nextTick();
});
it('calls fetchMore', () => {
expect(wrapper.vm.$apollo.queries.pipelineStats.fetchMore).toHaveBeenCalledTimes(1);
});
it('show an error message', () => {
expect(findAlert().text()).toBe(
'Could not load the pipelines chart. Please refresh the page to try again.',
);
});
});
});
});
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