public void ConcertDayChooser_ReturnCorrectlyIfNoConcerts()
        {
            //Arrange
            var mockFestivalManager            = new Mock <IFestivalManager>();
            ParticipantConcertOverviewModel p1 = new ParticipantConcertOverviewModel(mockFestivalManager.Object)
            {
                Concerts = GenerateConcerts()
            };
            int result = 0;
            //Act
            var resultConcerts = p1.ConcertDayChooser(new DateTime(2020, 01, 13));

            //Assert
            Assert.Equal(result, resultConcerts.Count);
        }
        public void ConcertDayChooser_CheckCorrectListReturn()
        {
            //Arrange
            var mockFestivalManager            = new Mock <IFestivalManager>();
            ParticipantConcertOverviewModel p1 = new ParticipantConcertOverviewModel(mockFestivalManager.Object)
            {
                Concerts = GenerateConcerts()
            };
            string result = "Sunday";
            //Act
            var resultConcerts = p1.ConcertDayChooser(new DateTime(2020, 01, 12));

            //Assert
            Assert.Equal(result, resultConcerts[0].Start.DayOfWeek.ToString());
            Assert.Equal(result, resultConcerts[1].Start.DayOfWeek.ToString());
        }