// 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 util = require('util');
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function listener() {}
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function listener2() {}
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function listener3() {
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return 0;
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}
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function listener4() {
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return 1;
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}
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function TestStream() {}
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util.inherits(TestStream, events.EventEmitter);
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{
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var ee = new events.EventEmitter();
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ee.on('foo', listener);
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var fooListeners = ee.listeners('foo');
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var listeners = ee.listeners('foo');
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assert.ok(Array.isArray(listeners));
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assert.strictEqual(listeners.length, 1);
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assert.strictEqual(listeners[0], listener);
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ee.removeAllListeners('foo');
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listeners = ee.listeners('foo');
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assert.ok(Array.isArray(listeners));
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assert.strictEqual(listeners.length, 0);
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assert.ok(Array.isArray(fooListeners));
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assert.strictEqual(fooListeners.length, 1);
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assert.strictEqual(fooListeners[0], listener);
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}
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{
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var ee = new events.EventEmitter();
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ee.on('foo', listener);
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var eeListenersCopy = ee.listeners('foo');
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assert.ok(Array.isArray(eeListenersCopy));
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assert.strictEqual(eeListenersCopy.length, 1);
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assert.strictEqual(eeListenersCopy[0], listener);
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var listeners = ee.listeners('foo');
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assert.ok(Array.isArray(listeners));
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assert.strictEqual(listeners.length, 1);
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assert.strictEqual(listeners[0], listener);
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eeListenersCopy.push(listener2);
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listeners = ee.listeners('foo');
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assert.ok(Array.isArray(listeners));
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assert.strictEqual(listeners.length, 1);
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assert.strictEqual(listeners[0], listener);
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assert.strictEqual(eeListenersCopy.length, 2);
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assert.strictEqual(eeListenersCopy[0], listener);
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assert.strictEqual(eeListenersCopy[1], listener2);
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}
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{
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var ee = new events.EventEmitter();
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ee.on('foo', listener);
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var eeListenersCopy = ee.listeners('foo');
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ee.on('foo', listener2);
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var listeners = ee.listeners('foo');
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assert.ok(Array.isArray(listeners));
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assert.strictEqual(listeners.length, 2);
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assert.strictEqual(listeners[0], listener);
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assert.strictEqual(listeners[1], listener2);
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assert.ok(Array.isArray(eeListenersCopy));
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assert.strictEqual(eeListenersCopy.length, 1);
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assert.strictEqual(eeListenersCopy[0], listener);
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}
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{
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var ee = new events.EventEmitter();
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ee.once('foo', listener);
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var listeners = ee.listeners('foo');
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assert.ok(Array.isArray(listeners));
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assert.strictEqual(listeners.length, 1);
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assert.strictEqual(listeners[0], listener);
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}
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{
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var ee = new events.EventEmitter();
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ee.on('foo', listener);
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ee.once('foo', listener2);
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var listeners = ee.listeners('foo');
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assert.ok(Array.isArray(listeners));
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assert.strictEqual(listeners.length, 2);
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assert.strictEqual(listeners[0], listener);
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assert.strictEqual(listeners[1], listener2);
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}
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{
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var ee = new events.EventEmitter();
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ee._events = undefined;
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var listeners = ee.listeners('foo');
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assert.ok(Array.isArray(listeners));
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assert.strictEqual(listeners.length, 0);
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}
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{
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var s = new TestStream();
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var listeners = s.listeners('foo');
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assert.ok(Array.isArray(listeners));
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assert.strictEqual(listeners.length, 0);
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}
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{
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var ee = new events.EventEmitter();
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ee.on('foo', listener);
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var wrappedListener = ee.rawListeners('foo');
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assert.strictEqual(wrappedListener.length, 1);
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assert.strictEqual(wrappedListener[0], listener);
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assert.notStrictEqual(wrappedListener, ee.rawListeners('foo'));
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ee.once('foo', listener);
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var wrappedListeners = ee.rawListeners('foo');
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assert.strictEqual(wrappedListeners.length, 2);
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assert.strictEqual(wrappedListeners[0], listener);
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assert.notStrictEqual(wrappedListeners[1], listener);
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assert.strictEqual(wrappedListeners[1].listener, listener);
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assert.notStrictEqual(wrappedListeners, ee.rawListeners('foo'));
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ee.emit('foo');
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assert.strictEqual(wrappedListeners.length, 2);
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assert.strictEqual(wrappedListeners[1].listener, listener);
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}
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{
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var ee = new events.EventEmitter();
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ee.once('foo', listener3);
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ee.on('foo', listener4);
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var rawListeners = ee.rawListeners('foo');
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assert.strictEqual(rawListeners.length, 2);
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assert.strictEqual(rawListeners[0](), 0);
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var rawListener = ee.rawListeners('foo');
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assert.strictEqual(rawListener.length, 1);
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assert.strictEqual(rawListener[0](), 1);
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}
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