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denoland-deno/tests/node_compat/test/parallel/test-stream-pipe-manual-resume.js

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// deno-fmt-ignore-file
// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
// Taken from Node 20.11.1
// 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 stream = require('stream');
function test(throwCodeInbetween) {
// Check that a pipe does not stall if .read() is called unexpectedly
// (i.e. the stream is not resumed by the pipe).
const n = 1000;
let counter = n;
const rs = stream.Readable({
objectMode: true,
read: common.mustCallAtLeast(() => {
if (--counter >= 0)
rs.push({ counter });
else
rs.push(null);
}, n)
});
const ws = stream.Writable({
objectMode: true,
write: common.mustCall((data, enc, cb) => {
setImmediate(cb);
}, n)
});
setImmediate(() => throwCodeInbetween(rs, ws));
rs.pipe(ws);
}
test((rs) => rs.read());
test((rs) => rs.resume());
test(() => 0);