Bluffalo allows you to do real mocking and stubbing in Swift.
It generates a fake subclass, from a Swift class or protocol, and allows you to stub and inspect which methods were called on the fake.
- Because this relies on subclassing, this will not work for stubs.
- Properties cannot be stubbed yet.
$ brew install https://raw.githubusercontent.com/Nordstrom/bluffalo/master/Bluffalo.rbbluffalo -f path/to/Cat.swift -o path/to/FakeCat.swift -m MyContainingModule
Let's say we have the following class:
class Cat {
func numberOfLives() -> Int {
return 9
}
func meow(numberOfTimes: Int) {
while i < numberOfTimes {
print("Meow")
}
}
}
let fakeCat = FakeCat()
print( fakeCat.numberOfLives() ) // prints 9
fakeCat.stub(.numberOfLives()).andReturn(4)
print( fakeCat.numberOfLives() ) // prints 4
let fakeCat = FakeCat()
let numberOfLives = fakeCat.numberOfLives()
fakeCat.meow(numberOfTimes: 5)
print( fakeCat.didCall(method: .numberOfLives()) ) // prints true
print( fakeCat.matchingMethods(.numberOfLives()) ) // prints 1
// Arguments matter
print( fakeCat.didCall(method: .meow(numberOfTimes: 5)) ) // prints true
print( fakeCat.didCall(method: .meow(numberOfTimes: 4)) ) // prints false
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