denoland-deno/cli/tests/node_compat/test/parallel/test-stream-pipe-event.js

// 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

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//
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// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
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'use strict';
require('../common');
const stream = require('stream');
const assert = require('assert');

function Writable() {
  this.writable = true;
  stream.Stream.call(this);
}
Object.setPrototypeOf(Writable.prototype, stream.Stream.prototype);
Object.setPrototypeOf(Writable, stream.Stream);

function Readable() {
  this.readable = true;
  stream.Stream.call(this);
}
Object.setPrototypeOf(Readable.prototype, stream.Stream.prototype);
Object.setPrototypeOf(Readable, stream.Stream);

let passed = false;

const w = new Writable();
w.on('pipe', function(src) {
  passed = true;
});

const r = new Readable();
r.pipe(w);

assert.ok(passed);