ex-int-02-meet-the-teacher/MeetTheTeacher.Test/Model/Comparison/ByHourComparerTests.cs

using MeetTheTeacher.Model;
using MeetTheTeacher.Model.Comparison;

namespace MeetTheTeacher.Test.Model.Comparison;

public sealed class ByHourComparerTests
{
    [Fact]
    public void Compare_Ascending_BothNull()
    {
        var comparer = new ByHourComparer(true);

        comparer.Compare(null, null).Should().Be(0);
    }

    [Fact]
    public void Compare_Ascending_FirstNull()
    {
        var comparer = new ByHourComparer(true);
        var teacher2 = new Teacher("Teacher2") { 
            ConsultingHourWeekDay = DayOfWeek.Tuesday, 
            ConsultingHourUnit = SchoolUnit.UE02 
        };

        comparer.Compare(null, teacher2).Should().Be(1);
    }

    [Fact]
    public void Compare_Ascending_SecondNull()
    {
        var comparer = new ByHourComparer(true);
        var teacher1 = new Teacher("Teacher1")
        {
            ConsultingHourWeekDay = DayOfWeek.Monday, 
            ConsultingHourUnit = SchoolUnit.UE01
        };

        comparer.Compare(teacher1, null).Should().Be(-1);
    }

    [Fact]
    public void Compare_Ascending_DifferentWeekDays()
    {
        var comparer = new ByHourComparer(true);
        var teacher1 = new Teacher("Teacher1")
        {
            ConsultingHourWeekDay = DayOfWeek.Monday, 
            ConsultingHourUnit = SchoolUnit.UE01
        };
        var teacher2 = new Teacher("Teacher2")
        {
            ConsultingHourWeekDay = DayOfWeek.Tuesday, 
            ConsultingHourUnit = SchoolUnit.UE01
        };

        comparer.Compare(teacher1, teacher2).Should().Be(-1);
    }

    [Fact]
    public void Compare_Ascending_DifferentConsultingHours()
    {
        var comparer = new ByHourComparer(true);
        var teacher1 = new Teacher("Teacher1")
        {
            ConsultingHourWeekDay = DayOfWeek.Monday, 
            ConsultingHourUnit = SchoolUnit.UE02
        };
        var teacher2 = new Teacher("Teacher2")
        {
            ConsultingHourWeekDay = DayOfWeek.Monday, 
            ConsultingHourUnit = SchoolUnit.UE01
        };

        int result = comparer.Compare(teacher1, teacher2);

        result.Should().Be(1);
    }

    [Fact]
    public void Compare_Descending_FirstNull()
    {
        var comparer = new ByHourComparer(false);
        var teacher2 = new Teacher("Teacher2")
        {
            ConsultingHourWeekDay = DayOfWeek.Tuesday, 
            ConsultingHourUnit = SchoolUnit.UE02
        };

        comparer.Compare(null, teacher2).Should().Be(-1);
    }

    [Fact]
    public void Compare_Descending_SecondNull()
    {
        var comparer = new ByHourComparer(false);
        var teacher1 = new Teacher("Teacher1")
        {
            ConsultingHourWeekDay = DayOfWeek.Monday, 
            ConsultingHourUnit = SchoolUnit.UE01
        };

        comparer.Compare(teacher1, null).Should().Be(1);
    }
    
    [Fact]
    public void Compare_Descending_DifferentWeekDays()
    {
        var comparer = new ByHourComparer(false);
        var teacher1 = new Teacher("Teacher1")
        {
            ConsultingHourWeekDay = DayOfWeek.Monday, 
            ConsultingHourUnit = SchoolUnit.UE01
        };
        var teacher2 = new Teacher("Teacher2")
        {
            ConsultingHourWeekDay = DayOfWeek.Tuesday, 
            ConsultingHourUnit = SchoolUnit.UE01
        };

        comparer.Compare(teacher1, teacher2).Should().Be(1);
    }

    [Fact]
    public void Compare_Descending_DifferentConsultingHours()
    {
        var comparer = new ByHourComparer(false);
        var teacher1 = new Teacher("Teacher1")
        {
            ConsultingHourWeekDay = DayOfWeek.Monday, 
            ConsultingHourUnit = SchoolUnit.UE02
        };
        var teacher2 = new Teacher("Teacher2")
        {
            ConsultingHourWeekDay = DayOfWeek.Monday, 
            ConsultingHourUnit = SchoolUnit.UE01
        };

        int result = comparer.Compare(teacher1, teacher2);

        result.Should().Be(-1);
    }
}