assert_match(/^[0-9a-f]+(-modified)?$/, discovery_doc['source_version'])
assert_match(/^[0-9a-f]+(-modified)?$/, discovery_doc['sourceVersion'])
assert_match(/^unknown$/, discovery_doc['packageVersion'])
assert_match(/^[0-9a-f]+(-modified)?$/, discovery_doc['source_version'])
assert_match(/^[0-9a-f]+(-modified)?$/, discovery_doc['sourceVersion'])
assert_match(/^unknown$/, discovery_doc['packageVersion'])