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87 lines
2.7 KiB
JavaScript
87 lines
2.7 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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require('../common');
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const assert = require('assert');
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// This test verifies that stream.unshift(Buffer.alloc(0)) or
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// stream.unshift('') does not set state.reading=false.
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const Readable = require('stream').Readable;
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const r = new Readable();
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let nChunks = 10;
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const chunk = Buffer.alloc(10, 'x');
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r._read = function(n) {
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setImmediate(() => {
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r.push(--nChunks === 0 ? null : chunk);
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});
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};
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let readAll = false;
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const seen = [];
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r.on('readable', () => {
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let chunk;
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while ((chunk = r.read()) !== null) {
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seen.push(chunk.toString());
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// Simulate only reading a certain amount of the data,
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// and then putting the rest of the chunk back into the
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// stream, like a parser might do. We just fill it with
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// 'y' so that it's easy to see which bits were touched,
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// and which were not.
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const putBack = Buffer.alloc(readAll ? 0 : 5, 'y');
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readAll = !readAll;
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r.unshift(putBack);
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}
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});
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const expect =
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[ 'xxxxxxxxxx',
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'yyyyy',
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'xxxxxxxxxx',
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'yyyyy',
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'xxxxxxxxxx',
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'yyyyy',
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'xxxxxxxxxx',
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'yyyyy',
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'xxxxxxxxxx',
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'yyyyy',
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'xxxxxxxxxx',
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'yyyyy',
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'xxxxxxxxxx',
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'yyyyy',
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'xxxxxxxxxx',
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'yyyyy',
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'xxxxxxxxxx',
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'yyyyy' ];
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r.on('end', () => {
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assert.deepStrictEqual(seen, expect);
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console.log('ok');
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});
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