Function whileBusy

test/42.integrity.js:30–35

(self, fn)

		expect(count).to.equal(5);
	};
	const whileBusy = (self, fn) => {
		let count = 0;
		self.useFunc(() => { count += 1; fn(); });
		self.iterator.all();
		expect(count).to.equal(5);
	};
	const whileClosed = (self, fn) => {
		self.db.close();
		fn();