re-enable test_avro_regression

Author: mr-c

schema_salad/ref_resolver.py

@@ -158,7 +158,7 @@ def _add_properties(self, s):  # type: (unicode) -> None
                 self.url_fields.add(unicode(s))
         self.foreign_properties.add(s)
 
-    def add_namespaces(self, ns):  # type: (Dict[unicode, Any]) -> None
+    def add_namespaces(self, ns):  # type: (Dict[unicode, unicode]) -> None
         self.vocab.update(ns)
 
     def add_schemas(self, ns, base_url):

tests/test_examples.py

@@ -51,7 +51,6 @@ def test_self_validate(self):
                                      "schema_salad/metaschema/metaschema.yml"]))
 
     def test_avro_regression(self):
-        return
         self.assertEqual(0, schema_salad.main.main(argsl=["tests/Process.yml"]))
 
     def test_jsonld_ctx(self):