1
// Copyright (c) 2025 Cloudflare, Inc.
2
// Licensed under the Apache 2.0 license found in the LICENSE file or at:
3
//     https://opensource.org/licenses/Apache-2.0
4
import { deepStrictEqual } from 'node:assert';
5
 
6
// This test validates tee'ing value-oriented js-backed readable streams
7
// as there is no problem with byte-oriented systems.
8
export const clone = {
9
  async test() {
10
    function createReadableStreamFromString(str) {
11
      const encoder = new TextEncoder();
12
      const encodedData = encoder.encode(str);
13
 
14
      return new ReadableStream({
15
        start(controller) {
16
          // Enqueue the data and close the stream
17
          controller.enqueue(encodedData);
18
          controller.close();
19
        },
20
      });
21
    }
22
 
23
    const cr = new Request(new URL('http://localhost/test'), {
24
      method: 'POST',
25
      body: createReadableStreamFromString('Hello stream'),
26
      duplex: 'half',
27
    });
28
 
29
    const cr2 = cr.clone();
30
 
31
    deepStrictEqual(await cr.text(), await cr2.text());
32
  },
33
};