Not a single person in this thread commented on the use of Date.now() and similar - surely clock.now() - you never ever want to use global time in any code, how could you test it?
clock in this case is a thing that was supplied to the class or function. It could just be a function: () -> Instant.
(Setting a global mock clock is too evil, so don't suggest that!)
clock in this case is a thing that was supplied to the class or function. It could just be a function: () -> Instant.
(Setting a global mock clock is too evil, so don't suggest that!)