73 lines
2.1 KiB
JavaScript
73 lines
2.1 KiB
JavaScript
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import createEventHub from '~/helpers/event_hub_factory';
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import Diff from '~/diff';
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describe('Diff', () => {
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describe('diff <-> tabs interactions', () => {
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let hub;
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beforeEach(() => {
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hub = createEventHub();
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});
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describe('constructor', () => {
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it("takes in the `mergeRequestEventHub` when it's provided", () => {
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const diff = new Diff({ mergeRequestEventHub: hub });
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expect(diff.mrHub).toBe(hub);
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});
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it('does not fatal if no event hub is provided', () => {
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expect(() => {
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new Diff(); /* eslint-disable-line no-new */
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}).not.toThrow();
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});
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it("doesn't set the mrHub property if none is provided by the construction arguments", () => {
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const diff = new Diff();
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expect(diff.mrHub).toBe(undefined);
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});
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});
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describe('viewTypeSwitch', () => {
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const clickPath = '/path/somewhere?params=exist';
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const jsonPath = 'http://test.host/path/somewhere.json?params=exist';
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const simulatejQueryClick = {
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originalEvent: {
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target: {
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getAttribute() {
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return clickPath;
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},
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},
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preventDefault: jest.fn(),
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stopPropagation: jest.fn(),
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},
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};
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it('emits the correct switch view event when called and there is an `mrHub`', async () => {
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const diff = new Diff({ mergeRequestEventHub: hub });
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const hubEmit = new Promise((resolve) => {
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hub.$on('diff:switch-view-type', resolve);
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});
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diff.viewTypeSwitch(simulatejQueryClick);
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const { source } = await hubEmit;
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expect(simulatejQueryClick.originalEvent.preventDefault).toHaveBeenCalled();
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expect(simulatejQueryClick.originalEvent.stopPropagation).toHaveBeenCalled();
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expect(source).toBe(jsonPath);
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});
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it('is effectively a noop when there is no `mrHub`', () => {
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const diff = new Diff();
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expect(diff.mrHub).toBe(undefined);
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expect(() => {
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diff.viewTypeSwitch(simulatejQueryClick);
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}).not.toThrow();
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});
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});
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});
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});
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