def test_clone(self):
from papaye.models import Release
release = Release('A release', '1.0', metadata={})
result = Release.clone(release)
assert result is not release
assert result.__name__ == release.__name__
assert result.version == release.version
assert result.original_metadata == release.original_metadata
assert result.metadata == release.metadata
assert hasattr(result, 'release_files')
assert len(list(result)) == len(list(release))
