On page 122, it says to update AppModelTests with the following:
mockPedometer = MockPedometer()
sut = AppModel(pedometer: mockPedometer)
I get the following error:
Argument type ‘MockPedometer?’ does not conform to expected type ‘Pedometer’
I’m using Xcode Version 11.3 (11C29)
Any help in pointing to a solution would be appreciated.