Fix failing test case

Author: cwognum

numcodecs/tests/test_registry.py

@@ -4,10 +4,11 @@
 
 import numcodecs
 from numcodecs.registry import get_codec
+from numcodecs.errors import UnknownCodecError
 
 
 def test_registry_errors():
-    with pytest.raises(ValueError):
+    with pytest.raises(UnknownCodecError):
         get_codec({'id': 'foo'})