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limited_bytes_transform_stream_test.ts
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limited_bytes_transform_stream_test.ts
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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
import { assertEquals, assertRejects } from "../assert/mod.ts";
import { LimitedBytesTransformStream } from "./limited_bytes_transform_stream.ts";
Deno.test("[streams] LimitedBytesTransformStream", async function () {
const r = ReadableStream.from([
new Uint8Array([1, 2, 3]),
new Uint8Array([4, 5, 6]),
new Uint8Array([7, 8, 9]),
new Uint8Array([10, 11, 12]),
new Uint8Array([13, 14, 15]),
new Uint8Array([16, 17, 18]),
]).pipeThrough(new LimitedBytesTransformStream(7));
const chunks = await Array.fromAsync(r);
assertEquals(chunks.length, 2);
});
Deno.test("[streams] LimitedBytesTransformStream error", async function () {
const r = ReadableStream.from([
new Uint8Array([1, 2, 3]),
new Uint8Array([4, 5, 6]),
new Uint8Array([7, 8, 9]),
new Uint8Array([10, 11, 12]),
new Uint8Array([13, 14, 15]),
new Uint8Array([16, 17, 18]),
]).pipeThrough(new LimitedBytesTransformStream(7, { error: true }));
await assertRejects(async () => await Array.fromAsync(r), RangeError);
});