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import { GlAlert } from '@gitlab/ui';
import { GlLineChart } 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 UsageTrendsCountChart from '~/analytics/usage_trends/components/usage_trends_count_chart.vue';
import statsQuery from '~/analytics/usage_trends/graphql/queries/usage_count.query.graphql';
import ChartSkeletonLoader from '~/vue_shared/components/resizable_chart/skeleton_loader.vue';
import { mockQueryResponse, mockApolloResponse } from '../apollo_mock_data';
import { mockCountsData1 } from '../mock_data';
Vue.use(VueApollo);
const loadChartErrorMessage = 'My load error message';
const noDataMessage = 'My no data message';
const queryResponseDataKey = 'usageTrendsMeasurements';
const identifier = 'MOCK_QUERY';
const mockQueryConfig = {
identifier,
title: 'Mock Query',
query: statsQuery,
loadError: 'Failed to load mock query data',
};
const mockChartConfig = {
loadChartErrorMessage,
noDataMessage,
chartTitle: 'Foo',
yAxisTitle: 'Bar',
xAxisTitle: 'Baz',
queries: [mockQueryConfig],
};
describe('UsageTrendsCountChart', () => {
let wrapper;
let queryHandler;
const createComponent = ({ responseHandler }) => {
return shallowMount(UsageTrendsCountChart, {
apolloProvider: createMockApollo([[statsQuery, responseHandler]]),
propsData: { ...mockChartConfig },
});
};
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 = mockQueryResponse({ key: queryResponseDataKey, loading: true });
wrapper = createComponent({ responseHandler: queryHandler });
});
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(async () => {
queryHandler = mockQueryResponse({ key: queryResponseDataKey, data: [] });
wrapper = createComponent({ responseHandler: queryHandler });
await waitForPromises();
});
it('renders an no data message', () => {
expect(findAlert().text()).toBe(noDataMessage);
});
it('hides the skeleton loader', () => {
expect(findLoader().exists()).toBe(false);
});
it('renders the chart', () => {
expect(findChart().exists()).toBe(false);
});
});
describe('with data', () => {
beforeEach(async () => {
queryHandler = mockQueryResponse({ key: queryResponseDataKey, data: mockCountsData1 });
wrapper = createComponent({ responseHandler: queryHandler });
await waitForPromises();
});
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 = [{ __typename: 'UsageTrendsMeasurement', recordedAt, count: 5 }];
queryHandler = mockQueryResponse({
key: queryResponseDataKey,
data: mockCountsData1,
additionalData: newData,
});
wrapper = createComponent({ responseHandler: queryHandler });
await waitForPromises();
});
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 () => {
queryHandler = jest.fn().mockResolvedValueOnce(
mockApolloResponse({
key: queryResponseDataKey,
data: mockCountsData1,
hasNextPage: true,
}),
);
wrapper = createComponent({ responseHandler: queryHandler });
jest
.spyOn(wrapper.vm.$apollo.queries[identifier], 'fetchMore')
.mockImplementation(jest.fn().mockRejectedValue());
await nextTick();
});
it('calls fetchMore', () => {
expect(wrapper.vm.$apollo.queries[identifier].fetchMore).toHaveBeenCalledTimes(1);
});
it('show an error message', () => {
expect(findAlert().text()).toBe(loadChartErrorMessage);
});
});
});
});
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