protected void Test_LosslessCompress_InvalidArguments()
{
IImageOptimizer optimizer = CreateImageOptimizer();
Assert.IsNotNull(optimizer);
ExceptionAssert.Throws <ArgumentNullException>(delegate()
{
optimizer.LosslessCompress((FileInfo)null);
});
ExceptionAssert.Throws <ArgumentNullException>(delegate()
{
optimizer.LosslessCompress((string)null);
});
ExceptionAssert.Throws <ArgumentException>(delegate()
{
optimizer.LosslessCompress("");
});
ExceptionAssert.Throws <ArgumentException>(delegate()
{
optimizer.LosslessCompress(Files.Missing);
});
}
private long Test_LosslessCompress(string fileName, bool resultIsSmaller)
{
FileInfo tempFile = CreateTemporaryFile(fileName);
try
{
IImageOptimizer optimizer = CreateImageOptimizer();
Assert.IsNotNull(optimizer);
long before = tempFile.Length;
optimizer.LosslessCompress(tempFile);
long after = tempFile.Length;
if (resultIsSmaller)
{
Assert.IsTrue(after < before, "{0} is not smaller than {1}", after, before);
}
else
{
Assert.AreEqual(before, after);
}
return(after);
}
finally
{
tempFile.Delete();
}
}
private bool DoLosslessCompress(FileInfo file)
{
IImageOptimizer optimizer = GetOptimizer(file);
if (optimizer == null)
{
return(false);
}
optimizer.OptimalCompression = OptimalCompression;
return(optimizer.LosslessCompress(file));
}
private void DoLosslessCompress(FileInfo file)
{
IImageOptimizer optimizer = GetOptimizer(file);
if (optimizer == null)
{
return;
}
optimizer.OptimalCompression = OptimalCompression;
optimizer.LosslessCompress(file);
}
/// <summary>
/// Performs lossless compression on the specified stream. If the new stream size is not smaller
/// the stream won't be overwritten.
/// </summary>
/// <param name="stream">The stream of the image to compress.</param>
/// <returns>True when the image could be compressed otherwise false.</returns>
public bool LosslessCompress(Stream stream)
{
ImageOptimizerHelper.CheckStream(stream);
IImageOptimizer optimizer = GetOptimizer(stream);
if (optimizer == null)
{
return(false);
}
optimizer.OptimalCompression = OptimalCompression;
return(optimizer.LosslessCompress(stream));
}
protected void Test_LosslessCompress_InvalidFile(string fileName)
{
FileInfo tempFile = CreateTemporaryFile(fileName);
try
{
ExceptionAssert.Throws <MagickCorruptImageErrorException>(delegate()
{
IImageOptimizer optimizer = CreateImageOptimizer();
Assert.IsNotNull(optimizer);
optimizer.LosslessCompress(tempFile);
});
}
finally
{
tempFile.Delete();
}
}