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using System.Reflection;
using VersOne.Epub.Internal;
using VersOne.Epub.Options;
using VersOne.Epub.Test.Unit.Mocks;
namespace VersOne.Epub.Test.Unit.Content.Loaders
{
public class EpubRemoteContentLoaderTests
{
private const string TEXT_FILE_HREF = "https://example.com/books/123/test.html";
private const string TEXT_FILE_CONTENT = "<html><head><title>Test HTML</title></head><body><h1>Test content</h1></body></html>";
private const EpubContentType TEXT_FILE_CONTENT_TYPE = EpubContentType.XHTML_1_1;
private const string TEXT_FILE_CONTENT_MIME_TYPE = "application/xhtml+xml";
private const string BYTE_FILE_HREF = "https://example.com/books/123/image.jpg";
private const EpubContentType BYTE_FILE_CONTENT_TYPE = EpubContentType.IMAGE_JPEG;
private const string BYTE_FILE_CONTENT_MIME_TYPE = "image/jpeg";
private static readonly byte[] BYTE_FILE_CONTENT = new byte[] { 0xff, 0xd8, 0xff, 0xe0, 0x00, 0x10, 0x4a, 0x46, 0x49, 0x46 };
private static EpubContentFileRefMetadata TextFileRefMetadata => new(TEXT_FILE_HREF, TEXT_FILE_CONTENT_TYPE, TEXT_FILE_CONTENT_MIME_TYPE);
private static EpubContentFileRefMetadata ByteFileRefMetadata => new(BYTE_FILE_HREF, BYTE_FILE_CONTENT_TYPE, BYTE_FILE_CONTENT_MIME_TYPE);
[Fact(DisplayName = "Constructing a remote content loader with non-null constructor parameters should succeed")]
public void ConstructorWithNonNullParametersTest()
{
_ = new EpubRemoteContentLoader(new TestEnvironmentDependencies(), new ContentDownloaderOptions());
}
[Fact(DisplayName = "Constructor should throw ArgumentNullException if environmentDependencies parameter is null")]
public void ConstructorWithNullEnvironmentDependenciesTest()
{
Assert.Throws<ArgumentNullException>(() => new EpubRemoteContentLoader(null!, new ContentDownloaderOptions()));
}
[Fact(DisplayName = "Constructing a remote content loader with null contentReaderOptions parameter should succeed")]
public void ConstructorWithNullContentReaderOptionsTest()
{
_ = new EpubRemoteContentLoader(new TestEnvironmentDependencies(), null);
}
[Fact(DisplayName = "Loading text file content synchronously should succeed")]
public void LoadContentAsTextTest()
{
TestContentDownloader testContentDownloader = new(TEXT_FILE_HREF, TEXT_FILE_CONTENT);
EpubRemoteContentLoader epubRemoteContentLoader = CreateEpubRemoteContentLoader(testContentDownloader);
string textContent = epubRemoteContentLoader.LoadContentAsText(TextFileRefMetadata);
Assert.Equal(TEXT_FILE_CONTENT, textContent);
}
[Fact(DisplayName = "Loading text file content asynchronously should succeed")]
public async Task LoadContentAsTextAsyncTest()
{
TestContentDownloader testContentDownloader = new(TEXT_FILE_HREF, TEXT_FILE_CONTENT);
EpubRemoteContentLoader epubRemoteContentLoader = CreateEpubRemoteContentLoader(testContentDownloader);
string textContent = await epubRemoteContentLoader.LoadContentAsTextAsync(TextFileRefMetadata);
Assert.Equal(TEXT_FILE_CONTENT, textContent);
}
[Fact(DisplayName = "Loading byte file content synchronously should succeed")]
public void LoadContentAsBytesTest()
{
TestContentDownloader testContentDownloader = new(BYTE_FILE_HREF, BYTE_FILE_CONTENT);
EpubRemoteContentLoader epubRemoteContentLoader = CreateEpubRemoteContentLoader(testContentDownloader);
byte[] byteContent = epubRemoteContentLoader.LoadContentAsBytes(ByteFileRefMetadata);
Assert.Equal(BYTE_FILE_CONTENT, byteContent);
}
[Fact(DisplayName = "Loading byte file content asynchronously should succeed")]
public async Task LoadContentAsBytesAsyncTest()
{
TestContentDownloader testContentDownloader = new(BYTE_FILE_HREF, BYTE_FILE_CONTENT);
EpubRemoteContentLoader epubRemoteContentLoader = CreateEpubRemoteContentLoader(testContentDownloader);
byte[] byteContent = await epubRemoteContentLoader.LoadContentAsBytesAsync(ByteFileRefMetadata);
Assert.Equal(BYTE_FILE_CONTENT, byteContent);
}
[Fact(DisplayName = "Getting file content stream synchronously should succeed")]
public void GetContentStreamTest()
{
using MemoryStream testContentStream = new();
TestContentDownloader testContentDownloader = new(TEXT_FILE_HREF, testContentStream);
EpubRemoteContentLoader epubRemoteContentLoader = CreateEpubRemoteContentLoader(testContentDownloader);
Stream textContentStream = epubRemoteContentLoader.GetContentStream(TextFileRefMetadata);
Assert.Equal(testContentStream, textContentStream);
}
[Fact(DisplayName = "Getting file content stream asynchronously should succeed")]
public async Task GetContentStreamAsyncTest()
{
using MemoryStream testContentStream = new();
TestContentDownloader testContentDownloader = new(TEXT_FILE_HREF, testContentStream);
EpubRemoteContentLoader epubRemoteContentLoader = CreateEpubRemoteContentLoader(testContentDownloader);
Stream textContentStream = await epubRemoteContentLoader.GetContentStreamAsync(TextFileRefMetadata);
Assert.Equal(testContentStream, textContentStream);
}
[Fact(DisplayName = "Loading content of multiple files should succeed")]
public void LoadContentWithMultipleFilesTest()
{
TestContentDownloader testContentDownloader = new();
testContentDownloader.AddTextRemoteFile(TEXT_FILE_HREF, TEXT_FILE_CONTENT);
testContentDownloader.AddByteRemoteFile(BYTE_FILE_HREF, BYTE_FILE_CONTENT);
EpubRemoteContentLoader epubRemoteContentLoader = CreateEpubRemoteContentLoader(testContentDownloader);
string textContent = epubRemoteContentLoader.LoadContentAsText(TextFileRefMetadata);
Assert.Equal(TEXT_FILE_CONTENT, textContent);
byte[] byteContent = epubRemoteContentLoader.LoadContentAsBytes(ByteFileRefMetadata);
Assert.Equal(BYTE_FILE_CONTENT, byteContent);
}
[Fact(DisplayName = "LoadContentAsText should throw EpubContentDownloaderException if ContentDownloaderOptions.DownloadContent is false")]
public void LoadContentAsTextWithDownloadContentFalseTest()
{
ContentDownloaderOptions contentDownloaderOptions = new()
{
DownloadContent = false
};
EpubRemoteContentLoader epubRemoteContentLoader = CreateEpubRemoteContentLoader(contentDownloaderOptions: contentDownloaderOptions);
Assert.Throws<EpubContentDownloaderException>(() => epubRemoteContentLoader.LoadContentAsText(TextFileRefMetadata));
}
[Fact(DisplayName = "LoadContentAsTextAsync should throw EpubContentDownloaderException if ContentDownloaderOptions.DownloadContent is false")]
public async Task LoadContentAsTextAsyncWithDownloadContentFalseTest()
{
ContentDownloaderOptions contentDownloaderOptions = new()
{
DownloadContent = false
};
EpubRemoteContentLoader epubRemoteContentLoader = CreateEpubRemoteContentLoader(contentDownloaderOptions: contentDownloaderOptions);
await Assert.ThrowsAsync<EpubContentDownloaderException>(() => epubRemoteContentLoader.LoadContentAsTextAsync(TextFileRefMetadata));
}
[Fact(DisplayName = "LoadContentAsBytes should throw EpubContentDownloaderException if ContentDownloaderOptions.DownloadContent is false")]
public void LoadContentAsBytesWithDownloadContentFalseTest()
{
ContentDownloaderOptions contentDownloaderOptions = new()
{
DownloadContent = false
};
EpubRemoteContentLoader epubRemoteContentLoader = CreateEpubRemoteContentLoader(contentDownloaderOptions: contentDownloaderOptions);
Assert.Throws<EpubContentDownloaderException>(() => epubRemoteContentLoader.LoadContentAsBytes(ByteFileRefMetadata));
}
[Fact(DisplayName = "LoadContentAsBytesAsync should throw EpubContentDownloaderException if ContentDownloaderOptions.DownloadContent is false")]
public async Task LoadContentAsBytesAsyncWithDownloadContentFalseTest()
{
ContentDownloaderOptions contentDownloaderOptions = new()
{
DownloadContent = false
};
EpubRemoteContentLoader epubRemoteContentLoader = CreateEpubRemoteContentLoader(contentDownloaderOptions: contentDownloaderOptions);
await Assert.ThrowsAsync<EpubContentDownloaderException>(() => epubRemoteContentLoader.LoadContentAsBytesAsync(ByteFileRefMetadata));
}
[Fact(DisplayName = "GetContentStream should throw EpubContentDownloaderException if ContentDownloaderOptions.DownloadContent is false")]
public void GetContentStreamWithDownloadContentFalseTest()
{
ContentDownloaderOptions contentDownloaderOptions = new()
{
DownloadContent = false
};
EpubRemoteContentLoader epubRemoteContentLoader = CreateEpubRemoteContentLoader(contentDownloaderOptions: contentDownloaderOptions);
Assert.Throws<EpubContentDownloaderException>(() => epubRemoteContentLoader.GetContentStream(TextFileRefMetadata));
}
[Fact(DisplayName = "GetContentStreamAsync should throw EpubContentDownloaderException if ContentDownloaderOptions.DownloadContent is false")]
public async Task GetContentStreamAsyncWithDownloadContentFalseTest()
{
ContentDownloaderOptions contentDownloaderOptions = new()
{
DownloadContent = false
};
EpubRemoteContentLoader epubRemoteContentLoader = CreateEpubRemoteContentLoader(contentDownloaderOptions: contentDownloaderOptions);
await Assert.ThrowsAsync<EpubContentDownloaderException>(() => epubRemoteContentLoader.GetContentStreamAsync(TextFileRefMetadata));
}
[Fact(DisplayName = "Remote content loader should pass ContentDownloaderOptions.DownloaderUserAgent to the content downloader")]
public void LoadContentWithSpecifiedUserAgentTest()
{
TestContentDownloader testContentDownloader = new(TEXT_FILE_HREF, TEXT_FILE_CONTENT);
string testUserAgent = "Test UserAgent";
ContentDownloaderOptions contentDownloaderOptions = new()
{
DownloadContent = true,
DownloaderUserAgent = testUserAgent
};
EpubRemoteContentLoader epubRemoteContentLoader = CreateEpubRemoteContentLoader(testContentDownloader, contentDownloaderOptions);
epubRemoteContentLoader.LoadContentAsText(TextFileRefMetadata);
Assert.Equal(testUserAgent, testContentDownloader.LastUserAgent);
}
[Fact(DisplayName = "Remote content loader should use EpubReader/<version> user agent if ContentDownloaderOptions.DownloaderUserAgent is null")]
public void LoadContentWithNonSpecifiedUserAgentTest()
{
TestContentDownloader testContentDownloader = new(TEXT_FILE_HREF, TEXT_FILE_CONTENT);
AssemblyInformationalVersionAttribute? assemblyInformationalVersionAttribute =
typeof(EpubRemoteContentLoaderTests).Assembly.GetCustomAttribute<AssemblyInformationalVersionAttribute>();
Assert.NotNull(assemblyInformationalVersionAttribute);
string expectedUserAgent = "EpubReader/" + assemblyInformationalVersionAttribute.InformationalVersion;
ContentDownloaderOptions contentDownloaderOptions = new()
{
DownloadContent = true,
DownloaderUserAgent = null
};
EpubRemoteContentLoader epubRemoteContentLoader = CreateEpubRemoteContentLoader(testContentDownloader, contentDownloaderOptions);
epubRemoteContentLoader.LoadContentAsText(TextFileRefMetadata);
Assert.Equal(expectedUserAgent, testContentDownloader.LastUserAgent);
}
[Fact(DisplayName = "Remote content loader should use custom content downloader if it is supplied through ContentDownloaderOptions.CustomContentDownloader")]
public void LoadContentWithCustomContentDownloaderTest()
{
TestEnvironmentDependencies testEnvironmentDependencies = new(contentDownloader: null);
TestContentDownloader testContentDownloader = new(TEXT_FILE_HREF, TEXT_FILE_CONTENT);
ContentDownloaderOptions contentDownloaderOptions = new()
{
DownloadContent = true,
CustomContentDownloader = testContentDownloader
};
EpubRemoteContentLoader epubRemoteContentLoader = new(testEnvironmentDependencies, contentDownloaderOptions);
string textContent = epubRemoteContentLoader.LoadContentAsText(TextFileRefMetadata);
Assert.Equal(TEXT_FILE_CONTENT, textContent);
}
private static EpubRemoteContentLoader CreateEpubRemoteContentLoader(TestContentDownloader? testContentDownloader = null, ContentDownloaderOptions? contentDownloaderOptions = null)
{
TestEnvironmentDependencies testEnvironmentDependencies = new(contentDownloader: testContentDownloader ?? new TestContentDownloader());
contentDownloaderOptions ??= new()
{
DownloadContent = true
};
return new(testEnvironmentDependencies, contentDownloaderOptions);
}
}
}
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