[6a3a178] | 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 |
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| 26 | // Redirect warning output to tape.
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| 27 | var consoleWarn = console.warn;
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| 28 | console.warn = common.test.comment;
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| 29 |
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| 30 | common.test.on('end', function () {
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| 31 | console.warn = consoleWarn;
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| 32 | });
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| 33 |
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| 34 | // default
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| 35 | {
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| 36 | var e = new events.EventEmitter();
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| 37 |
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| 38 | for (var i = 0; i < 10; i++) {
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| 39 | e.on('default', common.mustNotCall());
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| 40 | }
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| 41 | assert.ok(!e._events['default'].hasOwnProperty('warned'));
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| 42 | e.on('default', common.mustNotCall());
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| 43 | assert.ok(e._events['default'].warned);
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| 44 |
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| 45 | // specific
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| 46 | e.setMaxListeners(5);
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| 47 | for (var i = 0; i < 5; i++) {
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| 48 | e.on('specific', common.mustNotCall());
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| 49 | }
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| 50 | assert.ok(!e._events['specific'].hasOwnProperty('warned'));
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| 51 | e.on('specific', common.mustNotCall());
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| 52 | assert.ok(e._events['specific'].warned);
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| 53 |
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| 54 | // only one
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| 55 | e.setMaxListeners(1);
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| 56 | e.on('only one', common.mustNotCall());
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| 57 | assert.ok(!e._events['only one'].hasOwnProperty('warned'));
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| 58 | e.on('only one', common.mustNotCall());
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| 59 | assert.ok(e._events['only one'].hasOwnProperty('warned'));
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| 60 |
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| 61 | // unlimited
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| 62 | e.setMaxListeners(0);
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| 63 | for (var i = 0; i < 1000; i++) {
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| 64 | e.on('unlimited', common.mustNotCall());
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| 65 | }
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| 66 | assert.ok(!e._events['unlimited'].hasOwnProperty('warned'));
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| 67 | }
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| 68 |
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| 69 | // process-wide
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| 70 | {
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| 71 | events.EventEmitter.defaultMaxListeners = 42;
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| 72 | var e = new events.EventEmitter();
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| 73 |
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| 74 | for (var i = 0; i < 42; ++i) {
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| 75 | e.on('fortytwo', common.mustNotCall());
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| 76 | }
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| 77 | assert.ok(!e._events['fortytwo'].hasOwnProperty('warned'));
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| 78 | e.on('fortytwo', common.mustNotCall());
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| 79 | assert.ok(e._events['fortytwo'].hasOwnProperty('warned'));
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| 80 | delete e._events['fortytwo'].warned;
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| 81 |
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| 82 | events.EventEmitter.defaultMaxListeners = 44;
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| 83 | e.on('fortytwo', common.mustNotCall());
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| 84 | assert.ok(!e._events['fortytwo'].hasOwnProperty('warned'));
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| 85 | e.on('fortytwo', common.mustNotCall());
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| 86 | assert.ok(e._events['fortytwo'].hasOwnProperty('warned'));
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| 87 | }
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| 88 |
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| 89 | // but _maxListeners still has precedence over defaultMaxListeners
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| 90 | {
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| 91 | events.EventEmitter.defaultMaxListeners = 42;
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| 92 | var e = new events.EventEmitter();
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| 93 | e.setMaxListeners(1);
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| 94 | e.on('uno', common.mustNotCall());
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| 95 | assert.ok(!e._events['uno'].hasOwnProperty('warned'));
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| 96 | e.on('uno', common.mustNotCall());
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| 97 | assert.ok(e._events['uno'].hasOwnProperty('warned'));
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| 98 |
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| 99 | // chainable
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| 100 | assert.strictEqual(e, e.setMaxListeners(1));
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| 101 | }
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