deno.land / std@0.166.0 / streams / delimiter_test.ts

delimiter_test.ts
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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
import { DelimiterStream, TextDelimiterStream, TextLineStream,} from "./delimiter.ts";import { assert, assertEquals } from "../testing/asserts.ts";
Deno.test("[streams] TextLineStream", async () => { const textStream = new ReadableStream({ start(controller) { controller.enqueue("qwertzu"); controller.enqueue("iopasd\r\nmnbvc"); controller.enqueue("xylk\rjhgfds\napoiuzt\r"); controller.enqueue("qwr\r09ei\rqwrjiowqr\r"); controller.enqueue("\nrewq0987\n\n654321"); controller.enqueue("\nrewq0987\r\n\r\n654321\r"); controller.close(); }, });
const lines = []; for await (const chunk of textStream.pipeThrough(new TextLineStream())) { lines.push(chunk); } assertEquals(lines, [ "qwertzuiopasd", "mnbvcxylk\rjhgfds", "apoiuzt\rqwr\r09ei\rqwrjiowqr", "rewq0987", "", "654321", "rewq0987", "", "654321\r", ]);
const textStream2 = new ReadableStream({ start(controller) { controller.enqueue("rewq0987\r\n\r\n654321\n"); controller.close(); }, });
const lines2 = []; for await (const chunk of textStream2.pipeThrough(new TextLineStream())) { lines2.push(chunk); } assertEquals(lines2, [ "rewq0987", "", "654321", "", ]);});
Deno.test("[streams] TextLineStream - allowCR", async () => { const textStream = new ReadableStream({ start(controller) { controller.enqueue("qwertzu"); controller.enqueue("iopasd\r\nmnbvc"); controller.enqueue("xylk\rjhgfds\napoiuzt\r"); controller.enqueue("qwr\r09ei\rqwrjiowqr\r"); controller.enqueue("\nrewq0987\n\n654321"); controller.enqueue("\nrewq0987\r\n\r\n654321\r"); controller.close(); }, });
const lines = []; for await ( const chunk of textStream.pipeThrough(new TextLineStream({ allowCR: true })) ) { lines.push(chunk); } assertEquals(lines, [ "qwertzuiopasd", "mnbvcxylk", "jhgfds", "apoiuzt", "qwr", "09ei", "qwrjiowqr", "rewq0987", "", "654321", "rewq0987", "", "654321", "", ]);
const textStream2 = new ReadableStream({ start(controller) { controller.enqueue("rewq0987\r\n\r\n654321\n"); controller.close(); }, });
const lines2 = []; for await (const chunk of textStream2.pipeThrough(new TextLineStream())) { lines2.push(chunk); } assertEquals(lines2, [ "rewq0987", "", "654321", "", ]);});
Deno.test("[streams] TextLineStream - large chunks", async () => { const textStream = new ReadableStream({ start(controller) { controller.enqueue("\n".repeat(10000)); controller.enqueue("\n".repeat(10000)); controller.close(); }, });
let lines = 0; for await (const chunk of textStream.pipeThrough(new TextLineStream())) { assertEquals(chunk, ""); lines++; } assertEquals(lines, 20001);});
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);});
Deno.test("[streams] TextDelimiterStream", 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 TextDelimiterStream("foo")); 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);});
std
Deno standard library
GitHub Repositorydenoland/deno_std
GitHub Stars
2458

Version Info

Tagged at
2 months ago