using NexusReader.Infrastructure.Services;
using Xunit;

namespace NexusReader.Application.Tests.Services;

public class EpubMetadataExtractorTests
{
    private readonly EpubMetadataExtractor _sut;

    public EpubMetadataExtractorTests()
    {
        _sut = new EpubMetadataExtractor();
    }

    [Fact]
    public async Task ExtractMetadataAsync_WithInvalidStream_ReturnsFailure()
    {
        // Arrange
        using var invalidStream = new MemoryStream(new byte[] { 0, 1, 2, 3 });

        // Act
        var result = await _sut.ExtractMetadataAsync(invalidStream);

        // Assert
        Assert.True(result.IsFailed);
        Assert.Contains("Failed to extract EPUB metadata", result.Errors[0].Message);
    }
}