t.seconds = 59 t.minutes = 59 assert (t.hours == 0) assert (t.minutes == 59) assert (t.seconds == 59) t.tick() assert (t.hours == 1) assert (t.minutes == 0) assert (t.seconds == 0) t.seconds = 59 t.minutes = 59 assert (t.hours == 1) assert (t.minutes == 59) assert (t.seconds == 59) t.tick() assert (t.hours == 2) assert (t.minutes == 0) assert (t.seconds == 0) t.reset() assert (t.hours == 0) assert (t.minutes == 0) assert (t.seconds == 0) t.hours = 1 t.minutes = 2 t.seconds = 3 assert (t.__str__() == "1h 2m 3s")
