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using System.Text;
namespace VersOne.Epub.Test.Unit.Mocks
{
internal class TestEpubContentLoader : IEpubContentLoader
{
private readonly byte[]? byteContent;
private readonly Stream? stream;
public TestEpubContentLoader()
{
byteContent = Array.Empty<byte>();
stream = null;
}
public TestEpubContentLoader(string textContent)
{
byteContent = Encoding.UTF8.GetBytes(textContent);
stream = null;
}
public TestEpubContentLoader(byte[] byteContent)
{
this.byteContent = byteContent;
stream = null;
}
public TestEpubContentLoader(Stream stream)
{
byteContent = null;
this.stream = stream;
}
public byte[] LoadContentAsBytes(EpubContentFileRefMetadata contentFileRefMetadata)
{
return byteContent ?? Array.Empty<byte>();
}
public Task<byte[]> LoadContentAsBytesAsync(EpubContentFileRefMetadata contentFileRefMetadata)
{
return Task.FromResult(LoadContentAsBytes(contentFileRefMetadata));
}
public string LoadContentAsText(EpubContentFileRefMetadata contentFileRefMetadata)
{
return byteContent != null ? Encoding.UTF8.GetString(byteContent) : String.Empty;
}
public Task<string> LoadContentAsTextAsync(EpubContentFileRefMetadata contentFileRefMetadata)
{
return Task.FromResult(LoadContentAsText(contentFileRefMetadata));
}
public Stream GetContentStream(EpubContentFileRefMetadata contentFileRefMetadata)
{
if (stream != null)
{
return stream;
}
else if (byteContent != null)
{
return new MemoryStream(byteContent);
}
else
{
return new MemoryStream();
}
}
public Task<Stream> GetContentStreamAsync(EpubContentFileRefMetadata contentFileRefMetadata)
{
return Task.FromResult(GetContentStream(contentFileRefMetadata));
}
}
}
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