Adding minor tests to test_regtap.

(in an attempt to tackle #425).

pyvo/registry/tests/test_regtap.py

@@ -514,6 +514,10 @@ def test_interface_without_role(self):
             resource.get_service('tap')
         assert (str(excinfo.value) == "No matching interface.")
 
+    def test_non_standard_interface(self):
+        intf = regtap.Interface("http://url", "", "", "")
+        assert intf.supports("ivo://ivoa.net/std/sia") == False
+
 
 class _FakeResult:
     """A fake class just sufficient for giving dal.query.Record enough
@@ -602,6 +606,9 @@ def test_select_single_matching_service(self):
         })
 
         assert (rsc.service._baseurl == "http://b")
+        # this makes sure caching the service obtained doesn't break
+        # things
+        assert (rsc.service._baseurl == "http://b")
 
     def test_capless(self):
         rsc = _makeRegistryRecord({})