using Lib;

namespace LibTests
{
    
    public class LibraryTesting
    {
        [Fact]
        public void GetPeriods_TimeFrom_Return7And21And2Periods()
        {
            TimeSpan[] startTimes = { TimeSpan.FromHours(9), TimeSpan.FromHours(10.5), TimeSpan.FromHours(12), new TimeSpan(15, 30, 0), new TimeSpan(17, 0, 0) };
            int[] durations = { 60, 60, 20, 10, 30 };
            var test = Calculations.AvailablePeriods(startTimes, durations, TimeSpan.FromHours(8), TimeSpan.FromHours(18), 40);
            Assert.Equal(7, test.Length);

            TimeSpan[] startTimes2 = { TimeSpan.FromHours(10), TimeSpan.FromHours(11), TimeSpan.FromHours(15), new TimeSpan(15, 30, 0), new TimeSpan(16, 50, 0) };
            int[] durations2 = { 60, 30, 10, 10, 40 };
            var test2 = Calculations.AvailablePeriods(startTimes2, durations2, TimeSpan.FromHours(8), TimeSpan.FromHours(18), 20);
            Assert.Equal(21, test2.Length);

            TimeSpan[] startTimes3 = { TimeSpan.FromHours(8), TimeSpan.FromHours(10), TimeSpan.FromHours(12), new TimeSpan(13, 30, 0), TimeSpan.FromHours(14),
                new TimeSpan(16, 50, 0), new TimeSpan(17, 20, 0) };
            int[] durations3 = { 60, 25, 15, 50, 40, 15, 30 };
            var test3 = Calculations.AvailablePeriods(startTimes3, durations3, TimeSpan.FromHours(8), TimeSpan.FromHours(18), 90);
            Assert.Equal(2, test3.Length);
        }
        
        [Fact]
        public void GetAvailablePeriods_NoBusyRanges_Return0Periods()
        {
            TimeSpan[] startTimes = { TimeSpan.FromHours(8) };
            int[] durations = { 60 };

            var test = Calculations.AvailablePeriods(startTimes, durations, TimeSpan.FromHours(8), TimeSpan.FromHours(9.5), 90);

            Assert.Empty(test);
        }
        
    }
}