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// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import { test, runIfMain } from "../testing/mod.ts";
import { assert, assertEquals, assertStrictEq } from "../testing/asserts.ts";
import { collectUint8Arrays, deferred, MuxAsyncIterator } from "./async.ts";
test(async function asyncDeferred(): Promise<void> {
const d = deferred<number>();
d.resolve(12);
});
async function* gen123(): AsyncIterableIterator<number> {
yield 1;
yield 2;
yield 3;
}
async function* gen456(): AsyncIterableIterator<number> {
yield 4;
yield 5;
yield 6;
}
test(async function asyncMuxAsyncIterator(): Promise<void> {
const mux = new MuxAsyncIterator<number>();
mux.add(gen123());
mux.add(gen456());
const results = new Set();
for await (const value of mux) {
results.add(value);
}
assertEquals(results.size, 6);
});
test(async function collectUint8Arrays0(): Promise<void> {
async function* gen(): AsyncIterableIterator<Uint8Array> {}
const result = await collectUint8Arrays(gen());
assert(result instanceof Uint8Array);
assertEquals(result.length, 0);
});
test(async function collectUint8Arrays0(): Promise<void> {
async function* gen(): AsyncIterableIterator<Uint8Array> {}
const result = await collectUint8Arrays(gen());
assert(result instanceof Uint8Array);
assertStrictEq(result.length, 0);
});
test(async function collectUint8Arrays1(): Promise<void> {
const buf = new Uint8Array([1, 2, 3]);
async function* gen(): AsyncIterableIterator<Uint8Array> {
yield buf;
}
const result = await collectUint8Arrays(gen());
assertStrictEq(result, buf);
assertStrictEq(result.length, 3);
});
test(async function collectUint8Arrays4(): Promise<void> {
async function* gen(): AsyncIterableIterator<Uint8Array> {
yield new Uint8Array([1, 2, 3]);
yield new Uint8Array([]);
yield new Uint8Array([4, 5]);
yield new Uint8Array([6]);
}
const result = await collectUint8Arrays(gen());
assert(result instanceof Uint8Array);
assertStrictEq(result.length, 6);
for (let i = 0; i < 6; i++) {
assertStrictEq(result[i], i + 1);
}
});
runIfMain(import.meta);
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