gitlab-org--gitlab-foss/spec/frontend/mr_popover/index_spec.js

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import * as createDefaultClient from '~/lib/graphql';
import { setHTMLFixture } from '../helpers/fixtures';
import initMRPopovers from '~/mr_popover/index';
createDefaultClient.default = jest.fn();
describe('initMRPopovers', () => {
let mr1;
let mr2;
let mr3;
beforeEach(() => {
setHTMLFixture(`
<div id="one" class="gfm-merge_request" data-mr-title="title" data-iid="1" data-project-path="group/project">
MR1
</div>
<div id="two" class="gfm-merge_request" data-mr-title="title" data-iid="1" data-project-path="group/project">
MR2
</div>
<div id="three" class="gfm-merge_request">
MR3
</div>
`);
mr1 = document.querySelector('#one');
mr2 = document.querySelector('#two');
mr3 = document.querySelector('#three');
mr1.addEventListener = jest.fn();
mr2.addEventListener = jest.fn();
mr3.addEventListener = jest.fn();
});
it('does not add the same event listener twice', () => {
initMRPopovers([mr1, mr1, mr2]);
expect(mr1.addEventListener).toHaveBeenCalledTimes(1);
expect(mr2.addEventListener).toHaveBeenCalledTimes(1);
});
it('does not add listener if it does not have the necessary data attributes', () => {
initMRPopovers([mr1, mr2, mr3]);
expect(mr3.addEventListener).not.toHaveBeenCalled();
});
});