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43 lines
1.3 KiB
43 lines
1.3 KiB
/* eslint-disable required-modules */
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// ordinarily test files must require('common') but that action causes
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// the global console to be compiled, defeating the purpose of this test
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'use strict';
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const common = require('../common');
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const assert = require('assert');
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const EventEmitter = require('events');
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const leak_warning = /EventEmitter memory leak detected\. 2 hello listeners/;
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let write_calls = 0;
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process.on('warning', (warning) => {
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// This will be called after the default internal
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// process warning handler is called. The default
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// process warning writes to the console, which will
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// invoke the monkeypatched process.stderr.write
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// below.
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assert.strictEqual(write_calls, 1);
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EventEmitter.defaultMaxListeners = old_default;
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// when we get here, we should be done
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});
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process.stderr.write = (data) => {
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if (write_calls === 0)
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assert.ok(data.match(leak_warning));
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else
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assert.fail('stderr.write should be called only once');
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write_calls++;
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};
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const old_default = EventEmitter.defaultMaxListeners;
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EventEmitter.defaultMaxListeners = 1;
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const e = new EventEmitter();
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e.on('hello', common.noop);
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e.on('hello', common.noop);
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// TODO: Figure out how to validate console. Currently,
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// there is no obvious way of validating that console
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// exists here exactly when it should.
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