Musify/backend/Tests/Musify.Application.Tests/PlayLists/GetPlayListCoverQueryHandlerTests.cs

using ErrorOr;
using Musify.Application.PlayLists;
using Musify.Application.Tests.TestSupport;
using Xunit;

namespace Musify.Application.Tests.PlayLists
{
    public sealed class GetPlayListCoverQueryHandlerTests : HandlerTestBase
    {
        private GetPlayListCoverQueryHandler CreateHandler() =>
            new(Database, TestConfigurations.Storage("covers-bucket"), TestConfigurations.PlayList());

        [Theory]
        [InlineData("small", "small.webp")]
        [InlineData("large", "large.webp")]
        [InlineData("medium", "medium.webp")]
        public async Task Handle_ExistingPlayList_ReturnsRequestedSize(string size, string expectedFileName)
        {
            var owner = TestEntities.User();
            var playList = TestEntities.PlayList(owner.Id);
            await SeedAsync(owner, playList);

            var result = await CreateHandler().Handle(new GetPlayListCoverQuery(playList.Id, size), TestContext.Current.CancellationToken);

            Assert.False(result.IsError);
            Assert.Equal("covers-bucket", result.Value.Bucket);
            Assert.EndsWith(expectedFileName, result.Value.Key);
        }

        [Fact]
        public async Task Handle_PlayListMissing_ReturnsNotFound()
        {
            var result = await CreateHandler().Handle(new GetPlayListCoverQuery(Guid.NewGuid(), "small"), TestContext.Current.CancellationToken);

            Assert.Equal(ErrorType.NotFound, result.FirstError.Type);
        }
    }
}