41 lines
1.3 KiB
JavaScript
41 lines
1.3 KiB
JavaScript
import { expect } from '@open-wc/testing';
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import sinon from 'sinon';
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import { EventTargetShim } from '../src/EventTargetShim.js';
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describe('EventTargetShim', () => {
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class NonElementClass extends EventTargetShim {}
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it('implements "addEventListener"', async () => {
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const nonElementClass = new NonElementClass();
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const cb = sinon.spy();
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nonElementClass.addEventListener('my-event', cb);
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expect(cb).to.not.have.been.called;
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nonElementClass.dispatchEvent(new Event('my-event'));
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expect(cb).to.have.been.called;
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});
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it('implements "removeEventListener"', async () => {
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const nonElementClass = new NonElementClass();
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const cb = sinon.spy();
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nonElementClass.addEventListener('my-event', cb);
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expect(cb).to.not.have.been.called;
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nonElementClass.dispatchEvent(new Event('my-event'));
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expect(cb).to.have.been.calledOnce;
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nonElementClass.removeEventListener('my-event', cb);
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nonElementClass.dispatchEvent(new Event('my-event'));
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expect(cb).to.have.been.calledOnce;
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});
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it('implements "dispatchEvent"', async () => {
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const nonElementClass = new NonElementClass();
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const cb = sinon.spy();
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nonElementClass.addEventListener('my-event', cb);
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expect(cb).to.not.have.been.called;
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nonElementClass.dispatchEvent(new Event('my-event'));
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expect(cb).to.have.been.called;
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});
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});
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