generators.js.disabled
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	import { test, testDeep, summary } from './helpers.js';

	console.log('Generator Tests\n');

	function* simple() {
	yield 1;
	yield 2;
	yield 3;
	}

	const gen = simple();
	test('first yield', gen.next().value, 1);
	test('second yield', gen.next().value, 2);
	test('third yield', gen.next().value, 3);
	test('done', gen.next().done, true);

	function* withReturn() {
	yield 1;
	return 'final';
	}

	const gen2 = withReturn();
	test('yield before return', gen2.next().value, 1);
	const last = gen2.next();
	test('return value', last.value, 'final');
	test('return done', last.done, true);

	function* counter(start) {
	let i = start;
	while (true) {
	yield i++;
	}
	}

	const c = counter(10);
	test('counter 10', c.next().value, 10);
	test('counter 11', c.next().value, 11);
	test('counter 12', c.next().value, 12);

	function* range(start, end) {
	for (let i = start; i <= end; i++) {
	yield i;
	}
	}

	const arr = [...range(1, 5)];
	testDeep('spread generator', arr, [1, 2, 3, 4, 5]);

	function* twoWay() {
	const x = yield 1;
	const y = yield x + 1;
	yield y + 1;
	}

	const tw = twoWay();
	test('two way first', tw.next().value, 1);
	test('two way second', tw.next(10).value, 11);
	test('two way third', tw.next(20).value, 21);

	summary();