1
0
Fork 0
mirror of https://github.com/denoland/deno.git synced 2024-11-05 09:04:41 -05:00
denoland-deno/cli/tests/node_compat/test/parallel/test-stream-readable-flow-recursion.js
Yoshiya Hinosawa 6915a9b7a7
test(ext/node): more node compat tests (#17827)
This PR adds the remaining ~650 Node.js compat test cases from std/node.

Among these 650 cases, about 130 cases are now failing. These failing
cases are prefixed with `TODO:` in `tests/node_compat/config.json`.
These will be addressed in later PRs.
2023-02-20 16:35:04 +01:00

84 lines
2.7 KiB
JavaScript

// 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 "node/_tools/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');
});