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denoland-deno/tests/node_compat/test/parallel/test-stream-pipe-flow-after-unpipe.js
Asher Gomez 29085895c9
chore: move tools/node_compat to tests/node_compat/runner (#23025)
The `tools/node_compat/node` submodule has been moved to
`tests/node_compat/runner/suite` and the remaining files within
`tools/node_compat` to `tests/node_compat/runner`.

Most of the changes are of the header within `tests/node_compat/test`
files. The `setup` and `test` tasks within `tests/node_comapt` execute
successfully.

Towards #22525
CC @mmastrac
2024-04-03 09:24:55 +11:00

36 lines
1,023 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 `tests/node_compat/runner/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);