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'use strict';
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var common = require('../common');
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var assert = require('assert');
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var events = require('events');
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function listener() {}
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function listener2() {}
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var e1 = new events.EventEmitter();
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e1.on('foo', listener);
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var fooListeners = e1.listeners('foo');
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assert.deepEqual(e1.listeners('foo'), [listener]);
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e1.removeAllListeners('foo');
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assert.deepEqual(e1.listeners('foo'), []);
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assert.deepEqual(fooListeners, [listener]);
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var e2 = new events.EventEmitter();
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e2.on('foo', listener);
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var e2ListenersCopy = e2.listeners('foo');
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assert.deepEqual(e2ListenersCopy, [listener]);
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assert.deepEqual(e2.listeners('foo'), [listener]);
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e2ListenersCopy.push(listener2);
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assert.deepEqual(e2.listeners('foo'), [listener]);
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assert.deepEqual(e2ListenersCopy, [listener, listener2]);
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var e3 = new events.EventEmitter();
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e3.on('foo', listener);
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var e3ListenersCopy = e3.listeners('foo');
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e3.on('foo', listener2);
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assert.deepEqual(e3.listeners('foo'), [listener, listener2]);
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assert.deepEqual(e3ListenersCopy, [listener]);
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