Skip to main content
Module

std/streams/byte_slice_stream_test.ts

The Deno Standard Library
denoland/deno_std
Go to Latest
File
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assertEquals, assertThrows } from "../assert/mod.ts";import { ByteSliceStream } from "./byte_slice_stream.ts";
Deno.test("ByteSliceStream", async function () {  function createStream(start = 0, end = Infinity) {    return ReadableStream.from([      new Uint8Array([0, 1]),      new Uint8Array([2, 3]),    ]).pipeThrough(new ByteSliceStream(start, end));  }
  let chunks = await Array.fromAsync(createStream(0, 3));  assertEquals(chunks, [    new Uint8Array([0, 1]),    new Uint8Array([2, 3]),  ]);
  chunks = await Array.fromAsync(createStream(0, 1));  assertEquals(chunks, [    new Uint8Array([0, 1]),  ]);
  chunks = await Array.fromAsync(createStream(0, 2));  assertEquals(chunks, [    new Uint8Array([0, 1]),    new Uint8Array([2]),  ]);
  chunks = await Array.fromAsync(createStream(0, 3));  assertEquals(chunks, [    new Uint8Array([0, 1]),    new Uint8Array([2, 3]),  ]);
  chunks = await Array.fromAsync(createStream(1, 3));  assertEquals(chunks, [    new Uint8Array([1]),    new Uint8Array([2, 3]),  ]);
  chunks = await Array.fromAsync(createStream(2, 3));  assertEquals(chunks, [    new Uint8Array([2, 3]),  ]);
  chunks = await Array.fromAsync(createStream(0, 10));  assertEquals(chunks, [    new Uint8Array([0, 1]),    new Uint8Array([2, 3]),  ]);
  assertThrows(() => createStream(-1, Infinity));});