1 | // Copyright Joyent, Inc. and other Node contributors.
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2 | //
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3 | // Permission is hereby granted, free of charge, to any person obtaining a
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4 | // copy of this software and associated documentation files (the
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5 | // "Software"), to deal in the Software without restriction, including
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6 | // without limitation the rights to use, copy, modify, merge, publish,
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7 | // distribute, sublicense, and/or sell copies of the Software, and to permit
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8 | // persons to whom the Software is furnished to do so, subject to the
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9 | // following conditions:
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10 | //
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11 | // The above copyright notice and this permission notice shall be included
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12 | // in all copies or substantial portions of the Software.
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13 | //
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14 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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15 | // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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16 | // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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17 | // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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18 | // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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19 | // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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20 | // USE OR OTHER DEALINGS IN THE SOFTWARE.
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21 |
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22 | var common = require('./common');
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23 | var assert = require('assert');
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24 | var events = require('../');
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25 | var e = new events.EventEmitter();
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26 |
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27 | var hasDefineProperty = !!Object.defineProperty;
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28 | try { Object.defineProperty({}, 'x', { value: 0 }); } catch (err) { hasDefineProperty = false }
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29 |
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30 | e.on('maxListeners', common.mustCall());
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31 |
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32 | // Should not corrupt the 'maxListeners' queue.
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33 | e.setMaxListeners(42);
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34 |
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35 | var throwsObjs = [NaN, -1, 'and even this'];
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36 | var maxError = /^RangeError: The value of "n" is out of range\. It must be a non-negative number\./;
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37 | var defError = /^RangeError: The value of "defaultMaxListeners" is out of range\. It must be a non-negative number\./;
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38 |
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39 | for (var i = 0; i < throwsObjs.length; i++) {
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40 | var obj = throwsObjs[i];
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41 | assert.throws(function() { e.setMaxListeners(obj); }, maxError);
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42 | if (hasDefineProperty) {
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43 | assert.throws(function() { events.defaultMaxListeners = obj; }, defError);
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44 | }
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45 | }
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46 |
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47 | e.emit('maxListeners');
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