43 lines
1.2 KiB
JavaScript
43 lines
1.2 KiB
JavaScript
import $ from 'jquery';
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import ClassSpecHelper from 'helpers/class_spec_helper';
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import VersionCheckImage from '~/version_check_image';
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describe('VersionCheckImage', () => {
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let testContext;
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beforeEach(() => {
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testContext = {};
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});
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describe('bindErrorEvent', () => {
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ClassSpecHelper.itShouldBeAStaticMethod(VersionCheckImage, 'bindErrorEvent');
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beforeEach(() => {
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testContext.imageElement = $('<div></div>');
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});
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it('registers an error event', () => {
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jest.spyOn($.prototype, 'on').mockImplementation(() => {});
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// eslint-disable-next-line func-names
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jest.spyOn($.prototype, 'off').mockImplementation(function () {
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return this;
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});
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VersionCheckImage.bindErrorEvent(testContext.imageElement);
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expect($.prototype.off).toHaveBeenCalledWith('error');
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expect($.prototype.on).toHaveBeenCalledWith('error', expect.any(Function));
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});
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it('hides the imageElement on error', () => {
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jest.spyOn($.prototype, 'hide').mockImplementation(() => {});
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VersionCheckImage.bindErrorEvent(testContext.imageElement);
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testContext.imageElement.trigger('error');
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expect($.prototype.hide).toHaveBeenCalled();
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});
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});
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});
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