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merge_test.ts
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merge_test.ts
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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
import { mergeReadableStreams, zipReadableStreams } from "./merge.ts";
import { assertEquals } from "../testing/asserts.ts";
Deno.test("[streams] mergeReadableStreams", async () => {
const textStream = new ReadableStream<string>({
start(controller) {
controller.enqueue("qwertzuiopasd");
controller.enqueue("mnbvcxylkjhgfds");
controller.enqueue("apoiuztrewq0987654321");
controller.close();
},
});
const textStream2 = new ReadableStream<string>({
start(controller) {
controller.enqueue("mnbvcxylkjhgfds");
controller.enqueue("apoiuztrewq0987654321");
controller.enqueue("qwertzuiopasd");
controller.close();
},
});
const buf = [];
for await (const s of mergeReadableStreams(textStream, textStream2)) {
buf.push(s);
}
assertEquals(buf.sort(), [
"apoiuztrewq0987654321",
"apoiuztrewq0987654321",
"mnbvcxylkjhgfds",
"mnbvcxylkjhgfds",
"qwertzuiopasd",
"qwertzuiopasd",
]);
});
Deno.test("[streams] zipReadableStreams", async () => {
const textStream = new ReadableStream<string>({
start(controller) {
controller.enqueue("qwertzuiopasd");
controller.enqueue("mnbvcxylkjhgfds");
controller.enqueue("apoiuztrewq0987321");
controller.close();
},
});
const textStream2 = new ReadableStream<string>({
start(controller) {
controller.enqueue("mnbvcxylkjhgfdsewr");
controller.enqueue("apoiuztrewq0987654321");
controller.enqueue("qwertzuiopasq123d");
controller.close();
},
});
const buf = [];
for await (const s of zipReadableStreams(textStream, textStream2)) {
buf.push(s);
}
assertEquals(buf, [
"qwertzuiopasd",
"mnbvcxylkjhgfdsewr",
"mnbvcxylkjhgfds",
"apoiuztrewq0987654321",
"apoiuztrewq0987321",
"qwertzuiopasq123d",
]);
});