Mock java.time.format.DateTimeFormatter class

Question

I\'m trying to mock the DateTimeFormatter class. I\'ve done the following:

@RunWith(PowerMockRunner.class)
@PrepareForTest({DateTimeFormatter.class})
public          


        

Answer 1

An alternative to mocking LocalDateTime.now() is to inject the clock into your class and change your (or add another) constructor like this:

AwesomeClass(DateTimeFormatter fmt, Clock clock) {
  //instead of LocalDateTime now = LocalDateTime.now():
  LocalDateTime now = LocalDateTime.now(clock);
}

Then in your test:

new AwesomeClass(formatter, Clock.fixed(the time you want here));