1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
import { assertEquals, assertRejects } from "../testing/asserts.ts";import { LimitedBytesTransformStream } from "./limited_bytes_transform_stream.ts";
Deno.test("[streams] LimitedBytesTransformStream", async function () {  const r = new ReadableStream({    start(controller) {      controller.enqueue(new Uint8Array([1, 2, 3]));      controller.enqueue(new Uint8Array([4, 5, 6]));      controller.enqueue(new Uint8Array([7, 8, 9]));      controller.enqueue(new Uint8Array([10, 11, 12]));      controller.enqueue(new Uint8Array([13, 14, 15]));      controller.enqueue(new Uint8Array([16, 17, 18]));      controller.close();    },  });
  const chunks = [];  for await (const chunk of r.pipeThrough(new LimitedBytesTransformStream(7))) {    chunks.push(chunk);  }  assertEquals(chunks.length, 2);});
Deno.test("[streams] LimitedBytesTransformStream error", async function () {  const r = new ReadableStream({    start(controller) {      controller.enqueue(new Uint8Array([1, 2, 3]));      controller.enqueue(new Uint8Array([4, 5, 6]));      controller.enqueue(new Uint8Array([7, 8, 9]));      controller.enqueue(new Uint8Array([10, 11, 12]));      controller.enqueue(new Uint8Array([13, 14, 15]));      controller.enqueue(new Uint8Array([16, 17, 18]));      controller.close();    },  });
  await assertRejects(async () => {    for await (      const _chunk of r.pipeThrough(        new LimitedBytesTransformStream(7, { error: true }),      )    ) {      // needed to read    }  }, RangeError);});