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90 lines
3.1 KiB
90 lines
3.1 KiB
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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require('./common');
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var assert = require('assert');
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var events = require('../');
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var callbacks_called = [];
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var e = new events.EventEmitter();
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function callback1() {
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callbacks_called.push('callback1');
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e.on('foo', callback2);
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e.on('foo', callback3);
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e.removeListener('foo', callback1);
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}
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function callback2() {
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callbacks_called.push('callback2');
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e.removeListener('foo', callback2);
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}
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function callback3() {
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callbacks_called.push('callback3');
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e.removeListener('foo', callback3);
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}
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e.on('foo', callback1);
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assert.strictEqual(e.listeners('foo').length, 1);
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e.emit('foo');
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assert.strictEqual(e.listeners('foo').length, 2);
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assert.ok(Array.isArray(callbacks_called));
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assert.strictEqual(callbacks_called.length, 1);
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assert.strictEqual(callbacks_called[0], 'callback1');
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e.emit('foo');
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assert.strictEqual(e.listeners('foo').length, 0);
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assert.ok(Array.isArray(callbacks_called));
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assert.strictEqual(callbacks_called.length, 3);
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assert.strictEqual(callbacks_called[0], 'callback1');
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assert.strictEqual(callbacks_called[1], 'callback2');
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assert.strictEqual(callbacks_called[2], 'callback3');
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e.emit('foo');
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assert.strictEqual(e.listeners('foo').length, 0);
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assert.ok(Array.isArray(callbacks_called));
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assert.strictEqual(callbacks_called.length, 3);
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assert.strictEqual(callbacks_called[0], 'callback1');
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assert.strictEqual(callbacks_called[1], 'callback2');
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assert.strictEqual(callbacks_called[2], 'callback3');
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e.on('foo', callback1);
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e.on('foo', callback2);
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assert.strictEqual(e.listeners('foo').length, 2);
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e.removeAllListeners('foo');
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assert.strictEqual(e.listeners('foo').length, 0);
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// Verify that removing callbacks while in emit allows emits to propagate to
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// all listeners
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callbacks_called = [];
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e.on('foo', callback2);
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e.on('foo', callback3);
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assert.strictEqual(2, e.listeners('foo').length);
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e.emit('foo');
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assert.ok(Array.isArray(callbacks_called));
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assert.strictEqual(callbacks_called.length, 2);
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assert.strictEqual(callbacks_called[0], 'callback2');
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assert.strictEqual(callbacks_called[1], 'callback3');
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assert.strictEqual(0, e.listeners('foo').length);
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