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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
import { DelimiterStream } from "./delimiter_stream.ts";import { assert, assertEquals } from "../testing/asserts.ts";
Deno.test("[streams] DelimiterStream", async () => {  const textStream = new ReadableStream({    start(controller) {      controller.enqueue("qwertzu");      controller.enqueue("iopasdfoomnbvc");      controller.enqueue("xylkjhfoogfdsapfoooiuzt");      controller.enqueue("rewq098765432fo");      controller.enqueue("o349012i491290");      controller.close();    },  });
  const lines = textStream    .pipeThrough(new TextEncoderStream())    .pipeThrough(new DelimiterStream(new TextEncoder().encode("foo")))    .pipeThrough(new TextDecoderStream());  const reader = lines.getReader();
  const a = await reader.read();  assertEquals(a.value, "qwertzuiopasd");  const b = await reader.read();  assertEquals(b.value, "mnbvcxylkjh");  const c = await reader.read();  assertEquals(c.value, "gfdsap");  const d = await reader.read();  assertEquals(d.value, "oiuztrewq098765432");  const e = await reader.read();  assertEquals(e.value, "349012i491290");  const f = await reader.read();  assert(f.done);});