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/**
* Copyright (c) 2019, Microsoft Corporation (MIT License).
*/
import * as assert from 'assert';
import { EventEmitter2 } from './eventEmitter2';
describe('EventEmitter2', () => {
it('should fire listeners multiple times', () => {
const order: string[] = [];
const emitter = new EventEmitter2<number>();
emitter.event(data => order.push(data + 'a'));
emitter.event(data => order.push(data + 'b'));
emitter.fire(1);
emitter.fire(2);
assert.deepEqual(order, [ '1a', '1b', '2a', '2b' ]);
});
it('should not fire listeners once disposed', () => {
const order: string[] = [];
const emitter = new EventEmitter2<number>();
emitter.event(data => order.push(data + 'a'));
const disposeB = emitter.event(data => order.push(data + 'b'));
emitter.event(data => order.push(data + 'c'));
emitter.fire(1);
disposeB.dispose();
emitter.fire(2);
assert.deepEqual(order, [ '1a', '1b', '1c', '2a', '2c' ]);
});
});
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