public void Format_Time_TimeFormatIsValid() { //Arrange var time = new Time { Hours = 23, Minutes = 59, Seconds = 59 }; var formatter = new BerlinClockTimeFormatter(); //Act var formattedTimeString = formatter.Format(time); //Assert Assert.IsNotNull(formattedTimeString); var rows = formattedTimeString.Split(new[] { Environment.NewLine }, StringSplitOptions.None); this.ValidateRowsLength(rows); this.ValidateRowsContainAllowedSymbols(rows); }