rx-queue/dist/esm/src/debounce-queue/debounce-queue.spec.js

Easy to Use ReactiveX Queue that Supports Delay/DelayExecutor/Throttle/Debounce/Concurrency Features Powered by RxJS/IxJS

#!/usr/bin/env -S node --no-warnings --loader ts-node/esm
import { test, sinon, } from 'tstest';
import DebounceQueue from './debounce-queue.js';
const EXPECTED_ITEM1 = { test: 'testing123' };
const EXPECTED_ITEM2 = { mol: 42 };
const EXPECTED_ITEM3 = 42;
const DELAY_PERIOD_TIME = 10; // milliseconds
test('DebounceQueue 1 item', async (t) => {
    const q = new DebounceQueue(DELAY_PERIOD_TIME);
    const spy = sinon.spy();
    q.subscribe(spy);
    q.next(EXPECTED_ITEM1);
    t.ok(spy.notCalled, 'should not called right after first item');
    await new Promise(resolve => setTimeout(resolve, DELAY_PERIOD_TIME + 3));
    t.ok(spy.calledOnce, 'should be called after the DELAY_PERIOD_TIME');
    t.deepEqual(spy.firstCall.args[0], EXPECTED_ITEM1, 'should get the first item immediately');
});
test('DebounceQueue 2 item', async (t) => {
    const q = new DebounceQueue(DELAY_PERIOD_TIME);
    const spy = sinon.spy();
    q.subscribe(spy);
    q.next(EXPECTED_ITEM1);
    q.next(EXPECTED_ITEM2);
    await new Promise(resolve => setTimeout(resolve, DELAY_PERIOD_TIME + 3));
    t.equal(spy.callCount, 1, 'should be called only once after DELAY_PERIOD_TIME because its debounced');
    t.deepEqual(spy.lastCall.args[0], EXPECTED_ITEM2, 'should get the EXPECTED_ITEM2');
});
test('DebounceQueue 3 items', async (t) => {
    const q = new DebounceQueue(DELAY_PERIOD_TIME);
    const spy = sinon.spy();
    q.subscribe(spy);
    q.next(EXPECTED_ITEM1);
    q.next(EXPECTED_ITEM2);
    await new Promise(resolve => setTimeout(resolve, DELAY_PERIOD_TIME + 3));
    q.next(EXPECTED_ITEM3);
    t.equal(spy.callCount, 1, 'should called once right after next(EXPECTED_ITEM3)');
    t.deepEqual(spy.lastCall.args[0], EXPECTED_ITEM2, 'the first call should receive EXPECTED_ITEM2');
    await new Promise(resolve => setTimeout(resolve, DELAY_PERIOD_TIME + 3));
    t.equal(spy.callCount, 2, 'should be called twice after the DELAY_PERIOD_TIME');
    t.deepEqual(spy.lastCall.args[0], EXPECTED_ITEM3, 'should get EXPECTED_ITEM3');
});
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