async.js
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async.js
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	import { test, summary } from './helpers.js';

	console.log('Async/Await Tests\n');

	let results = {};

	async function basicAsync() {
	return 42;
	}
	basicAsync().then(v => { results.basic = v; });

	const arrowAsync = async () => 'arrow result';
	arrowAsync().then(v => { results.arrow = v; });

	const singleParam = async x => x * 2;
	singleParam(21).then(v => { results.singleParam = v; });

	const multiParam = async (a, b) => a + b;
	multiParam(10, 32).then(v => { results.multiParam = v; });

	async function withPromise() {
	return Promise.resolve('promise from async');
	}
	withPromise().then(v => { results.withPromise = v; });

	async function conditional(flag) {
	if (flag) return 'true branch';
	return 'false branch';
	}
	conditional(true).then(v => { results.condTrue = v; });
	conditional(false).then(v => { results.condFalse = v; });

	const obj = {
	value: 100,
	asyncMethod: async function () {
	return this.value;
	}
	};
	obj.asyncMethod().then(v => { results.objMethod = v; });

	Promise.resolve(1)
	.then(v => v + 1)
	.then(v => v + 1)
	.then(v => v + 1)
	.then(v => { results.chain = v; });

	async function awaiter() {
	const a = await Promise.resolve(1);
	const b = await Promise.resolve(2);
	return a + b;
	}
	awaiter().then(v => { results.awaiter = v; });

	async function awaitValue() {
	return await 42;
	}
	awaitValue().then(v => { results.awaitValue = v; });

	setTimeout(() => {
	test('basic async', results.basic, 42);
	test('arrow async', results.arrow, 'arrow result');
	test('single param async', results.singleParam, 42);
	test('multi param async', results.multiParam, 42);
	test('with promise', results.withPromise, 'promise from async');
	test('conditional true', results.condTrue, 'true branch');
	test('conditional false', results.condFalse, 'false branch');
	test('object method', results.objMethod, 100);
	test('promise chain', results.chain, 4);
	test('awaiter sum', results.awaiter, 3);
	test('await value', results.awaitValue, 42);
	summary();
	}, 50);

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