92 lines
		
	
	
		
			2.9 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
			
		
		
	
	
			92 lines
		
	
	
		
			2.9 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
import { setHTMLFixture } from 'helpers/fixtures';
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import initAlertHandler from '~/alert_handler';
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describe('Alert Handler', () => {
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  const ALERT_CLASS = 'gl-alert';
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  const BANNER_CLASS = 'gl-banner';
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  const DISMISS_CLASS = 'gl-alert-dismiss';
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  const DISMISS_LABEL = 'Dismiss';
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  const generateHtml = (parentClass) =>
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    `<div class="${parentClass}">
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      <button aria-label="${DISMISS_LABEL}">Dismiss</button>
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    </div>`;
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  const findFirstAlert = () => document.querySelector(`.${ALERT_CLASS}`);
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  const findFirstBanner = () => document.querySelector(`.${BANNER_CLASS}`);
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  const findAllAlerts = () => document.querySelectorAll(`.${ALERT_CLASS}`);
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  const findFirstDismissButton = () => document.querySelector(`[aria-label="${DISMISS_LABEL}"]`);
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  const findFirstDismissButtonByClass = () => document.querySelector(`.${DISMISS_CLASS}`);
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  describe('initAlertHandler', () => {
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    describe('with one alert', () => {
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      beforeEach(() => {
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        setHTMLFixture(generateHtml(ALERT_CLASS));
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        initAlertHandler();
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      });
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      it('should render the alert', () => {
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        expect(findFirstAlert()).toExist();
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      });
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      it('should dismiss the alert on click', () => {
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        findFirstDismissButton().click();
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        expect(findFirstAlert()).not.toExist();
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      });
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    });
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    describe('with two alerts', () => {
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      beforeEach(() => {
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        setHTMLFixture(generateHtml(ALERT_CLASS) + generateHtml(ALERT_CLASS));
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        initAlertHandler();
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      });
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      it('should render two alerts', () => {
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        expect(findAllAlerts()).toHaveLength(2);
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      });
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      it('should dismiss only one alert on click', () => {
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        findFirstDismissButton().click();
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        expect(findAllAlerts()).toHaveLength(1);
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      });
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    });
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    describe('with a dismissible banner', () => {
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      beforeEach(() => {
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        setHTMLFixture(generateHtml(BANNER_CLASS));
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        initAlertHandler();
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      });
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      it('should render the banner', () => {
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        expect(findFirstBanner()).toExist();
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      });
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      it('should dismiss the banner on click', () => {
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        findFirstDismissButton().click();
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        expect(findFirstBanner()).not.toExist();
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      });
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    });
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    // Dismiss buttons *should* have the correct aria labels, but some of them won't
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    // because legacy code isn't always a11y compliant.
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    // This tests that the fallback for the incorrectly labelled buttons works.
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    describe('with a mislabelled dismiss button', () => {
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      beforeEach(() => {
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        setHTMLFixture(`<div class="${ALERT_CLASS}">
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          <button class="${DISMISS_CLASS}">Dismiss</button>
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        </div>`);
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        initAlertHandler();
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      });
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      it('should render the banner', () => {
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        expect(findFirstAlert()).toExist();
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      });
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      it('should dismiss the banner on click', () => {
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        findFirstDismissButtonByClass().click();
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        expect(findFirstAlert()).not.toExist();
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      });
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    });
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  });
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});
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