fix the test case in main_test.go and module_test.go

core/module/module_test.go

@@ -59,6 +59,11 @@ func (m *mockPluginManager) Cache(ctx context.Context, cfg *plugin.Config) (defi
 	return nil, nil
 }
 
+// Registry returns a mock registry lookup implementation.
+func (m *mockPluginManager) Registry(ctx context.Context, cfg *plugin.Config) (definition.RegistryLookup, error) {
+	return nil, nil
+}
+
 // KeyManager returns a mock key manager implementation.
 func (m *mockPluginManager) KeyManager(ctx context.Context, cache definition.Cache, rLookup definition.RegistryLookup, cfg *plugin.Config) (definition.KeyManager, error) {
 	return nil, nil
@@ -180,4 +185,4 @@ func TestRegisterFailure(t *testing.T) {
 			}
 		})
 	}
-}
+}