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import { shallowMount } from '@vue/test-utils';
import Vue from 'vue';
import VueApollo from 'vue-apollo';
import oneReleaseQueryResponse from 'test_fixtures/graphql/releases/graphql/queries/one_release.query.graphql.json';
import createMockApollo from 'helpers/mock_apollo_helper';
import waitForPromises from 'helpers/wait_for_promises';
import createFlash from '~/flash';
import ReleaseShowApp from '~/releases/components/app_show.vue';
import ReleaseBlock from '~/releases/components/release_block.vue';
import ReleaseSkeletonLoader from '~/releases/components/release_skeleton_loader.vue';
import oneReleaseQuery from '~/releases/graphql/queries/one_release.query.graphql';
jest.mock('~/flash');
Vue.use(VueApollo);
const EXPECTED_ERROR_MESSAGE = 'Something went wrong while getting the release details.';
const MOCK_FULL_PATH = 'project/full/path';
const MOCK_TAG_NAME = 'test-tag-name';
describe('Release show component', () => {
let wrapper;
const createComponent = ({ apolloProvider }) => {
wrapper = shallowMount(ReleaseShowApp, {
provide: {
fullPath: MOCK_FULL_PATH,
tagName: MOCK_TAG_NAME,
},
apolloProvider,
});
};
afterEach(() => {
wrapper.destroy();
wrapper = null;
});
const findLoadingSkeleton = () => wrapper.find(ReleaseSkeletonLoader);
const findReleaseBlock = () => wrapper.find(ReleaseBlock);
const expectLoadingIndicator = () => {
it('renders a loading indicator', () => {
expect(findLoadingSkeleton().exists()).toBe(true);
});
};
const expectNoLoadingIndicator = () => {
it('does not render a loading indicator', () => {
expect(findLoadingSkeleton().exists()).toBe(false);
});
};
const expectNoFlash = () => {
it('does not show a flash message', () => {
expect(createFlash).not.toHaveBeenCalled();
});
};
const expectFlashWithMessage = (message) => {
it(`shows a flash message that reads "${message}"`, () => {
expect(createFlash).toHaveBeenCalledWith({
message,
captureError: true,
error: expect.any(Error),
});
});
};
const expectReleaseBlock = () => {
it('renders a release block', () => {
expect(findReleaseBlock().exists()).toBe(true);
});
};
const expectNoReleaseBlock = () => {
it('does not render a release block', () => {
expect(findReleaseBlock().exists()).toBe(false);
});
};
describe('GraphQL query variables', () => {
const queryHandler = jest.fn().mockResolvedValueOnce(oneReleaseQueryResponse);
beforeEach(() => {
const apolloProvider = createMockApollo([[oneReleaseQuery, queryHandler]]);
createComponent({ apolloProvider });
});
it('builds a GraphQL with the expected variables', () => {
expect(queryHandler).toHaveBeenCalledTimes(1);
expect(queryHandler).toHaveBeenCalledWith({
fullPath: MOCK_FULL_PATH,
tagName: MOCK_TAG_NAME,
});
});
});
describe('when the component is loading data', () => {
beforeEach(() => {
const apolloProvider = createMockApollo([
[oneReleaseQuery, jest.fn().mockReturnValueOnce(new Promise(() => {}))],
]);
createComponent({ apolloProvider });
});
expectLoadingIndicator();
expectNoFlash();
expectNoReleaseBlock();
});
describe('when the component has successfully loaded the release', () => {
beforeEach(async () => {
const apolloProvider = createMockApollo([
[oneReleaseQuery, jest.fn().mockResolvedValueOnce(oneReleaseQueryResponse)],
]);
createComponent({ apolloProvider });
await waitForPromises();
});
expectNoLoadingIndicator();
expectNoFlash();
expectReleaseBlock();
});
describe('when the request succeeded, but the returned "project" key was null', () => {
beforeEach(async () => {
const apolloProvider = createMockApollo([
[oneReleaseQuery, jest.fn().mockResolvedValueOnce({ data: { project: null } })],
]);
createComponent({ apolloProvider });
await waitForPromises();
});
expectNoLoadingIndicator();
expectFlashWithMessage(EXPECTED_ERROR_MESSAGE);
expectNoReleaseBlock();
});
describe('when the request succeeded, but the returned "project.release" key was null', () => {
beforeEach(async () => {
// As we return a release as `null`, Apollo also throws an error to the console
// about the missing field. We need to suppress console.error in order to check
// that flash message was called
// eslint-disable-next-line no-console
console.error = jest.fn();
const apolloProvider = createMockApollo([
[
oneReleaseQuery,
jest.fn().mockResolvedValueOnce({ data: { project: { release: null } } }),
],
]);
createComponent({ apolloProvider });
await waitForPromises();
});
expectNoLoadingIndicator();
expectFlashWithMessage(EXPECTED_ERROR_MESSAGE);
expectNoReleaseBlock();
});
describe('when an error occurs while loading the release', () => {
beforeEach(async () => {
const apolloProvider = createMockApollo([
[oneReleaseQuery, jest.fn().mockRejectedValueOnce('An error occurred!')],
]);
createComponent({ apolloProvider });
await waitForPromises();
});
expectNoLoadingIndicator();
expectFlashWithMessage(EXPECTED_ERROR_MESSAGE);
expectNoReleaseBlock();
});
});
|
