35 lines
907 B
JavaScript
35 lines
907 B
JavaScript
const expect = require('expect');
|
|
const {off} = require('./_30s.js');
|
|
|
|
test('off is a Function', () => {
|
|
expect(off).toBeInstanceOf(Function);
|
|
});
|
|
test('off removes an event listener', () => {
|
|
let el = document.createElement('div');
|
|
let val = false;
|
|
const fn = () => val = true;
|
|
el.addEventListener('click', fn);
|
|
off(el, 'click', fn);
|
|
var clickEvent = new MouseEvent('click', {
|
|
'view': window,
|
|
'bubbles': true,
|
|
'cancelable': false
|
|
});
|
|
el.dispatchEvent(clickEvent);
|
|
expect(val).toBeFalsy();
|
|
});
|
|
test('off removes an event listener', () => {
|
|
let el = document.createElement('div');
|
|
let val = false;
|
|
const fn = () => val = true;
|
|
el.addEventListener('click', fn);
|
|
off(el, 'click', fn, {});
|
|
var clickEvent = new MouseEvent('click', {
|
|
'view': window,
|
|
'bubbles': true,
|
|
'cancelable': false
|
|
});
|
|
el.dispatchEvent(clickEvent);
|
|
expect(val).toBeFalsy();
|
|
});
|