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67 lines
1.9 KiB
67 lines
1.9 KiB
'use strict';
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require('../common');
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var assert = require('assert');
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var events = require('events');
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var e = new events.EventEmitter();
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// default
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for (let i = 0; i < 10; i++) {
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e.on('default', function() {});
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}
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assert.ok(!e._events['default'].hasOwnProperty('warned'));
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e.on('default', function() {});
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assert.ok(e._events['default'].warned);
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// specific
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e.setMaxListeners(5);
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for (let i = 0; i < 5; i++) {
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e.on('specific', function() {});
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}
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assert.ok(!e._events['specific'].hasOwnProperty('warned'));
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e.on('specific', function() {});
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assert.ok(e._events['specific'].warned);
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// only one
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e.setMaxListeners(1);
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e.on('only one', function() {});
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assert.ok(!e._events['only one'].hasOwnProperty('warned'));
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e.on('only one', function() {});
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assert.ok(e._events['only one'].hasOwnProperty('warned'));
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// unlimited
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e.setMaxListeners(0);
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for (let i = 0; i < 1000; i++) {
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e.on('unlimited', function() {});
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}
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assert.ok(!e._events['unlimited'].hasOwnProperty('warned'));
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// process-wide
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events.EventEmitter.defaultMaxListeners = 42;
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e = new events.EventEmitter();
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for (let i = 0; i < 42; ++i) {
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e.on('fortytwo', function() {});
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}
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assert.ok(!e._events['fortytwo'].hasOwnProperty('warned'));
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e.on('fortytwo', function() {});
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assert.ok(e._events['fortytwo'].hasOwnProperty('warned'));
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delete e._events['fortytwo'].warned;
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events.EventEmitter.defaultMaxListeners = 44;
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e.on('fortytwo', function() {});
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assert.ok(!e._events['fortytwo'].hasOwnProperty('warned'));
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e.on('fortytwo', function() {});
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assert.ok(e._events['fortytwo'].hasOwnProperty('warned'));
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// but _maxListeners still has precedence over defaultMaxListeners
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events.EventEmitter.defaultMaxListeners = 42;
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e = new events.EventEmitter();
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e.setMaxListeners(1);
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e.on('uno', function() {});
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assert.ok(!e._events['uno'].hasOwnProperty('warned'));
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e.on('uno', function() {});
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assert.ok(e._events['uno'].hasOwnProperty('warned'));
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// chainable
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assert.strictEqual(e, e.setMaxListeners(1));
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