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52 lines
1.1 KiB
52 lines
1.1 KiB
import QUnit from 'qunit';
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import Stream from '../src/stream';
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QUnit.module('stream', {
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beforeEach() {
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this.stream = new Stream();
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},
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afterEach() {
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this.stream.dispose();
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}
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});
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QUnit.test('trigger calls listeners', function(assert) {
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const args = [];
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this.stream.on('test', function(data) {
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args.push(data);
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});
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this.stream.trigger('test', 1);
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this.stream.trigger('test', 2);
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assert.deepEqual(args, [1, 2]);
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});
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QUnit.test('callbacks can remove themselves', function(assert) {
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const args1 = [];
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const args2 = [];
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const args3 = [];
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const arg2Fn = (event) => {
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args2.push(event);
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this.stream.off('test', arg2Fn);
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};
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this.stream.on('test', (event) => {
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args1.push(event);
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});
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this.stream.on('test', arg2Fn);
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this.stream.on('test', (event) => {
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args3.push(event);
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});
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this.stream.trigger('test', 1);
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this.stream.trigger('test', 2);
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assert.deepEqual(args1, [1, 2], 'first callback ran all times');
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assert.deepEqual(args2, [1], 'second callback removed after first run');
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assert.deepEqual(args3, [1, 2], 'third callback ran all times');
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});
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