35 lines
785 B
TypeScript
35 lines
785 B
TypeScript
// Copyright 2021 Signal Messenger, LLC
|
|
// SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
import { assert } from 'chai';
|
|
|
|
import { AsyncQueue } from '../util/AsyncQueue';
|
|
|
|
describe('AsyncQueue', () => {
|
|
it('yields values as they are added, even if they were added before consuming', async () => {
|
|
const queue = new AsyncQueue<number>();
|
|
|
|
queue.add(1);
|
|
queue.add(2);
|
|
|
|
const resultPromise = (async () => {
|
|
const results = [];
|
|
for await (const value of queue) {
|
|
results.push(value);
|
|
if (value === 4) {
|
|
break;
|
|
}
|
|
}
|
|
return results;
|
|
})();
|
|
|
|
queue.add(3);
|
|
queue.add(4);
|
|
|
|
// Ignored, because we should've stopped iterating.
|
|
queue.add(5);
|
|
|
|
assert.deepEqual(await resultPromise, [1, 2, 3, 4]);
|
|
});
|
|
});
|