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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
import { assertEquals } from "../testing/asserts.ts";import { readableStreamFromIterable } from "./readable_stream_from_iterable.ts";
Deno.test("[streams] readableStreamFromIterable() array", async function () {  const strings: string[] = ["hello", "deno", "land"];  const encoder = new TextEncoder();  const readableStream = readableStreamFromIterable(    strings.map((s) => encoder.encode(s)),  );
  const readStrings = [];  const decoder = new TextDecoder();  for await (const chunk of readableStream) {    readStrings.push(decoder.decode(chunk));  }
  assertEquals(readStrings, strings);});
Deno.test("[streams] readableStreamFromIterable() generator", async function () {  const strings: string[] = ["hello", "deno", "land"];  const readableStream = readableStreamFromIterable((function* () {    const encoder = new TextEncoder();    for (const string of strings) {      yield encoder.encode(string);    }  })());
  const readStrings = [];  const decoder = new TextDecoder();  for await (const chunk of readableStream) {    readStrings.push(decoder.decode(chunk));  }
  assertEquals(readStrings, strings);});
Deno.test("[streams] readableStreamFromIterable() cancel", async function () {  let generatorError = null;  const readable = readableStreamFromIterable(async function* () {    try {      yield "foo";    } catch (error) {      generatorError = error;    }  }());  const reader = readable.getReader();  assertEquals(await reader.read(), { value: "foo", done: false });  const cancelReason = new Error("Cancelled by consumer.");  await reader.cancel(cancelReason);  assertEquals(generatorError, cancelReason);});