diff options
Diffstat (limited to 'tests/node_compat/test/parallel/test-stream-readable-flow-recursion.js')
-rw-r--r-- | tests/node_compat/test/parallel/test-stream-readable-flow-recursion.js | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-stream-readable-flow-recursion.js b/tests/node_compat/test/parallel/test-stream-readable-flow-recursion.js new file mode 100644 index 000000000..1ac657197 --- /dev/null +++ b/tests/node_compat/test/parallel/test-stream-readable-flow-recursion.js @@ -0,0 +1,84 @@ +// deno-fmt-ignore-file +// deno-lint-ignore-file + +// Copyright Joyent and Node contributors. All rights reserved. MIT license. +// Taken from Node 18.12.1 +// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually. + +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. + +'use strict'; +require('../common'); +const assert = require('assert'); + +// This test verifies that passing a huge number to read(size) +// will push up the highWaterMark, and cause the stream to read +// more data continuously, but without triggering a nextTick +// warning or RangeError. + +const Readable = require('stream').Readable; + +// Throw an error if we trigger a nextTick warning. +process.throwDeprecation = true; + +const stream = new Readable({ highWaterMark: 2 }); +let reads = 0; +let total = 5000; +stream._read = function(size) { + reads++; + size = Math.min(size, total); + total -= size; + if (size === 0) + stream.push(null); + else + stream.push(Buffer.allocUnsafe(size)); +}; + +let depth = 0; + +function flow(stream, size, callback) { + depth += 1; + const chunk = stream.read(size); + + if (!chunk) + stream.once('readable', flow.bind(null, stream, size, callback)); + else + callback(chunk); + + depth -= 1; + console.log(`flow(${depth}): exit`); +} + +flow(stream, 5000, function() { + console.log(`complete (${depth})`); +}); + +process.on('exit', function(code) { + assert.strictEqual(reads, 2); + // We pushed up the high water mark + assert.strictEqual(stream.readableHighWaterMark, 8192); + // Length is 0 right now, because we pulled it all out. + assert.strictEqual(stream.readableLength, 0); + assert(!code); + assert.strictEqual(depth, 0); + console.log('ok'); +}); |