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denoland-deno/tests/node_compat/test/parallel/test-readable-large-hwm.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 { Readable } = require('stream');
// Make sure that readable completes
// even when reading larger buffer.
const bufferSize = 10 * 1024 * 1024;
let n = 0;
const r = new Readable({
read() {
// Try to fill readable buffer piece by piece.
r.push(Buffer.alloc(bufferSize / 10));
if (n++ > 10) {
r.push(null);
}
}
});
r.on('readable', () => {
while (true) {
const ret = r.read(bufferSize);
if (ret === null)
break;
}
});
r.on('end', common.mustCall());