didier amyot
0d627c9051
The class was already implemented in "https://deno.land/std@0.144.0/streams/conversion.ts". So, I litterally lost 1 day of work! I hate myself.
45 lines
1.6 KiB
TypeScript
45 lines
1.6 KiB
TypeScript
import { readAll } from "https://deno.land/std@0.191.0/streams/read_all.ts";
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import { assertEquals } from "https://deno.land/std/testing/asserts.ts";
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import { AsyncIterableReader } from "../src/utils.ts";
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import { randomNumbers, range } from "./utils.ts";
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Deno.test("AsyncIterableReader", async (t) => {
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async function* miniSource(){
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yield Promise.resolve(new Uint8Array([1, 2, 3]));
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yield Promise.resolve(new Uint8Array([4, 5, 6, 7]));
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yield Promise.resolve(new Uint8Array([8, 9]));
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}
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async function* largeSource(size: number, seed = 77): AsyncIterable<Uint8Array>{
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let val = 0
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const random = randomNumbers(seed, size > 10 ? size / 4: size);
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while(val < size){
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const randomValue = random.next().value;
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const newVal = Math.min(val + randomValue, size);
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const ret = new Uint8Array(range(val, newVal));
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yield Promise.resolve(ret);
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val = newVal;
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}
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}
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await t.step('read all mini source', async () => {
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const reader = new AsyncIterableReader(miniSource());
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const expt = new Uint8Array([1, 2 ,3 ,4 ,5, 6,7,8,9])
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assertEquals(await readAll(reader), expt);
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});
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await t.step('read all large source', async () => {
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// let's run the test 1000 times to make sure implementation is ok.
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for(const i of randomNumbers(666, 100 * 1024, 1000)){
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const reader = new AsyncIterableReader(largeSource(i));
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const ret = await readAll(reader);
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assertEquals(ret.length, i);
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}
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});
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});
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