/
delimiter_test.ts
143 lines (130 loc) · 4.39 KB
/
delimiter_test.ts
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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
import {
DelimiterStream,
LineStream,
TextDelimiterStream,
TextLineStream,
} from "./delimiter.ts";
import { assert, assertEquals } from "../testing/asserts.ts";
Deno.test("[streams] LineStream", async () => {
const textStream = new ReadableStream({
start(controller) {
controller.enqueue("qwertzu");
controller.enqueue("iopasd\r\nmnbvc");
controller.enqueue("xylk\njhgfds\napoiuzt");
controller.enqueue("qwr09eiqwrjiowqr\r");
controller.enqueue("\nrewq0987654321");
controller.close();
},
});
const lines = textStream
.pipeThrough(new TextEncoderStream())
.pipeThrough(new LineStream())
.pipeThrough(new TextDecoderStream());
const reader = lines.getReader();
const a = await reader.read();
assertEquals(a.value, "qwertzuiopasd");
const b = await reader.read();
assertEquals(b.value, "mnbvcxylk");
const c = await reader.read();
assertEquals(c.value, "jhgfds");
const d = await reader.read();
assertEquals(d.value, "apoiuztqwr09eiqwrjiowqr");
const e = await reader.read();
assertEquals(e.value, "rewq0987654321");
const f = await reader.read();
assert(f.done);
});
Deno.test("[streams] TextLineStream", async () => {
const textStream = new ReadableStream({
start(controller) {
controller.enqueue("qwertzu");
controller.enqueue("iopasd\r\nmnbvc");
controller.enqueue("xylk\njhgfds\napoiuzt");
controller.enqueue("qwr09eiqwrjiowqr\r");
controller.enqueue("\nrewq0987\n\n654321");
controller.enqueue("\nrewq0987\r\n\r\n654321");
controller.close();
},
});
const lines = textStream.pipeThrough(new TextLineStream());
const reader = lines.getReader();
const a = await reader.read();
assertEquals(a.value, "qwertzuiopasd");
const b = await reader.read();
assertEquals(b.value, "mnbvcxylk");
const c = await reader.read();
assertEquals(c.value, "jhgfds");
const d = await reader.read();
assertEquals(d.value, "apoiuztqwr09eiqwrjiowqr");
const e = await reader.read();
assertEquals(e.value, "rewq0987");
const f = await reader.read();
assertEquals(f.value, "");
const g = await reader.read();
assertEquals(g.value, "654321");
const h = await reader.read();
assertEquals(h.value, "rewq0987");
const i = await reader.read();
assertEquals(i.value, "");
const j = await reader.read();
assertEquals(j.value, "654321");
const k = await reader.read();
assert(k.done);
});
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);
});