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81 lines
2.5 KiB
JavaScript
81 lines
2.5 KiB
JavaScript
// deno-fmt-ignore-file
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// deno-lint-ignore-file
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// Copyright Joyent and Node contributors. All rights reserved. MIT license.
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// Taken from Node 18.12.1
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// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
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// 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 str = 'asdfasdfasdfasdfasdf';
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const r = new stream.Readable({
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highWaterMark: 5,
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encoding: 'utf8'
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});
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let reads = 0;
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function _read() {
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if (reads === 0) {
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setTimeout(() => {
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r.push(str);
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}, 1);
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reads++;
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} else if (reads === 1) {
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const ret = r.push(str);
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assert.strictEqual(ret, false);
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reads++;
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} else {
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r.push(null);
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}
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}
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r._read = common.mustCall(_read, 3);
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r.on('end', common.mustCall());
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// Push some data in to start.
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// We've never gotten any read event at this point.
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const ret = r.push(str);
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// Should be false. > hwm
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assert(!ret);
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let chunk = r.read();
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assert.strictEqual(chunk, str);
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chunk = r.read();
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assert.strictEqual(chunk, null);
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r.once('readable', () => {
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// This time, we'll get *all* the remaining data, because
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// it's been added synchronously, as the read WOULD take
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// us below the hwm, and so it triggered a _read() again,
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// which synchronously added more, which we then return.
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chunk = r.read();
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assert.strictEqual(chunk, str + str);
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chunk = r.read();
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assert.strictEqual(chunk, null);
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});
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