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4f2e372716
Export a new common.noop no-operation function for general use. Allow using common.mustCall() without a fn argument to simplify test cases. Replace various non-op functions throughout tests with common.noop PR-URL: https://github.com/nodejs/node/pull/12027 Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com> Reviewed-By: Richard Lau <riclau@uk.ibm.com> Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com> Reviewed-By: Teddy Katz <teddy.katz@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
63 lines
1.9 KiB
JavaScript
63 lines
1.9 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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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 Stream = require('stream');
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const Readable = Stream.Readable;
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const r = new Readable();
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const N = 256;
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let reads = 0;
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r._read = function(n) {
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return r.push(++reads === N ? null : Buffer.allocUnsafe(1));
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};
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r.on('end', common.mustCall());
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const w = new Stream();
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w.writable = true;
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let buffered = 0;
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w.write = function(c) {
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buffered += c.length;
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process.nextTick(drain);
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return false;
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};
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function drain() {
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assert(buffered <= 3);
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buffered = 0;
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w.emit('drain');
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}
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w.end = common.mustCall();
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// Just for kicks, let's mess with the drain count.
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// This verifies that even if it gets negative in the
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// pipe() cleanup function, we'll still function properly.
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r.on('readable', function() {
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w.emit('drain');
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});
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r.pipe(w);
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