ReactiveSwift flipflop test

ReactiveSwift-flipflop.swift

it("FlipFlop should work") {

	let p = MutableProperty<Bool>(true)
	let pInv = MutableProperty<Bool>(false)

	let reset = MutableProperty<Bool>(false)
	let set = MutableProperty<Bool>(false)

	p <~ reset.producer.combineLatest(with: pInv.producer)
		.map { !($0 || $1) } // NOR
		.skipRepeats()

	pInv <~ set.producer.combineLatest(with: p.producer)
		.map { !($0 || $1) } // NOR
		.skipRepeats()

	print("===> reset = true")
	reset.value = true
	expect(p.value) == false
	expect(pInv.value) == !p.value

	print("===> reset = false")
	reset.value = false
	expect(p.value) == false
	expect(pInv.value) == !p.value

	print("===> set = true")
	set.value = true
	expect(p.value) == true
	expect(pInv.value) == !p.value

	print("===> set = false")
	set.value = false
	expect(p.value) == true
	expect(pInv.value) == !p.value

}