public void ShouldComputeCorrectDigest(string algorithmIdentifier, string content, string expectedDigest)
{
using var stream = new MemoryStream();
// make sure we write without BOM
using var writer = new StreamWriter(stream, encoding: new UTF8Encoding(encoderShouldEmitUTF8Identifier: false), leaveOpen: true);
writer.Write(content);
// the write is buffered, so we actually see it
writer.Flush();
// reset for reading
stream.Position = 0;
var actual = DescriptorFactory.ComputeDigest(algorithmIdentifier, stream);
actual.Should().Be(expectedDigest);
}
public void UnknownAlgorithmShouldThrow()
{
Action fail = () => DescriptorFactory.ComputeDigest("fake", Stream.Null);
fail.Should().Throw <NotImplementedException>().WithMessage("Unknown hash algorithm 'fake'.");
}