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1
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'use strict';
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2
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3
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var common = require('./common');
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4
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var EventEmitter = require('../');
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5
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var assert = require('assert');
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6
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7
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var ee = new EventEmitter();
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8
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var foo = Symbol('foo');
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9
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var listener = common.mustCall();
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10
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11
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ee.on(foo, listener);
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12
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assert.strictEqual(ee.listeners(foo).length, 1);
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13
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assert.strictEqual(ee.listeners(foo)[0], listener);
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14
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15
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ee.emit(foo);
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16
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17
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ee.removeAllListeners();
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18
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assert.strictEqual(ee.listeners(foo).length, 0);
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19
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20
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ee.on(foo, listener);
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21
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assert.strictEqual(ee.listeners(foo).length, 1);
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22
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assert.strictEqual(ee.listeners(foo)[0], listener);
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23
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24
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ee.removeListener(foo, listener);
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25
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assert.strictEqual(ee.listeners(foo).length, 0);
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