Function whileIterating

test/42.integrity.js:25–29

(self, fn)

	const blocked = fn => () => expect(fn).to.throw(TypeError);
	const normally = fn => fn();
	const whileIterating = (self, fn) => {
		let count = 0;
		for (const _ of self.iterator.iterate()) { count += 1; fn(); }
		expect(count).to.equal(5);
	};
	const whileBusy = (self, fn) => {
		let count = 0;
		self.useFunc(() => { count += 1; fn(); });