Musify/backend/Tests/Musify.Domain.Tests/ValueObjects/GenreCompatibilityTests.cs

using Musify.Domain.ValueObjects;
using Xunit;

namespace Musify.Domain.Tests.ValueObjects
{
    public sealed class GenreCompatibilityTests
    {
        [Theory]
        [InlineData(Genre.Classical, Genre.Metal)]
        [InlineData(Genre.Classical, Genre.Punk)]
        [InlineData(Genre.Ambient, Genre.Dubstep)]
        [InlineData(Genre.Lofi, Genre.DrumAndBass)]
        public void AreCompatible_IncompatiblePair_ReturnsFalse(Genre first, Genre second)
        {
            Assert.False(GenreCompatibility.AreCompatible(first, second));
            Assert.False(GenreCompatibility.AreCompatible(second, first));
        }

        [Theory]
        [InlineData(Genre.Pop, Genre.Rock)]
        [InlineData(Genre.HipHop, Genre.RnB)]
        [InlineData(Genre.Classical, Genre.Jazz)]
        public void AreCompatible_CompatiblePair_ReturnsTrue(Genre first, Genre second)
        {
            Assert.True(GenreCompatibility.AreCompatible(first, second));
        }

        [Fact]
        public void AreCompatible_SameGenre_ReturnsTrue()
        {
            Assert.True(GenreCompatibility.AreCompatible(Genre.Pop, Genre.Pop));
        }

        [Fact]
        public void FindConflicts_NoIncompatiblePairs_ReturnsEmpty()
        {
            var conflicts = GenreCompatibility.FindConflicts([Genre.Pop, Genre.Rock, Genre.Indie]);

            Assert.Empty(conflicts);
        }

        [Fact]
        public void FindConflicts_IncompatiblePairPresent_ReturnsIt()
        {
            var conflicts = GenreCompatibility.FindConflicts([Genre.Pop, Genre.Classical, Genre.Metal]);

            var conflict = Assert.Single(conflicts);
            Assert.Equal((Genre.Classical, Genre.Metal), conflict);
        }
    }
}