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denoland-deno/cli/tests/node_compat/test/parallel/test-stream-pipe-flow-after-unpipe.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

36 lines
1,009 B
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
'use strict';
const common = require('../common');
const { Readable, Writable } = require('stream');
// Tests that calling .unpipe() un-blocks a stream that is paused because
// it is waiting on the writable side to finish a write().
const rs = new Readable({
highWaterMark: 1,
// That this gets called at least 20 times is the real test here.
read: common.mustCallAtLeast(() => rs.push('foo'), 20)
});
const ws = new Writable({
highWaterMark: 1,
write: common.mustCall(() => {
// Ignore the callback, this write() simply never finishes.
setImmediate(() => rs.unpipe(ws));
})
});
let chunks = 0;
rs.on('data', common.mustCallAtLeast(() => {
chunks++;
if (chunks >= 20)
rs.pause(); // Finish this test.
}));
rs.pipe(ws);