83a6a6ea32
* chore: make aware eslint that we use jest By setting up the jest environment, we no longer need to declare the 'test' global in the configuration. * chore: don't need to import expect, it's a jest environment global * chore: don't need to import expect when creating undefined test
34 lines
873 B
JavaScript
34 lines
873 B
JavaScript
const {off} = require('./_30s.js');
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test('off is a Function', () => {
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expect(off).toBeInstanceOf(Function);
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});
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test('off removes an event listener', () => {
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let el = document.createElement('div');
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let val = false;
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const fn = () => val = true;
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el.addEventListener('click', fn);
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off(el, 'click', fn);
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var clickEvent = new MouseEvent('click', {
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'view': window,
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'bubbles': true,
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'cancelable': false
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});
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el.dispatchEvent(clickEvent);
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expect(val).toBeFalsy();
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});
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test('off removes an event listener', () => {
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let el = document.createElement('div');
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let val = false;
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const fn = () => val = true;
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el.addEventListener('click', fn);
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off(el, 'click', fn, {});
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var clickEvent = new MouseEvent('click', {
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'view': window,
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'bubbles': true,
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'cancelable': false
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});
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el.dispatchEvent(clickEvent);
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expect(val).toBeFalsy();
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});
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