Fix --add-local-build with MBS Resolver.

The `MBSResolver.get_buildrequired_modulemds` did not try to load
local module builds and always just queried the remote MBS instance.

This commit fixes it by using local module if available.

module_build_service/resolver/MBSResolver.py

@@ -269,6 +269,12 @@ class MBSResolver(GenericResolver):
         :rtype: list
         :return: List of modulemd metadata.
         """
+        # If user used --add-local-build, we do actually not care about base_module_nsvc,
+        # because the user directly asked us to use that module.
+        local_modules = models.ModuleBuild.local_modules(self.db_session, name, stream)
+        if local_modules:
+            return [m.mmd() for m in local_modules]
+
         modules = self._get_modules(name, stream, strict=False, base_module_br=base_module_nsvc)
         return [load_mmd(module["modulemd"]) for module in modules]
 

tests/test_resolver/test_mbs.py

@@ -451,3 +451,28 @@ class TestMBSModule:
                 "virtual_stream": "virtualf28",
             },
         )
+
+    @patch(
+        "module_build_service.config.Config.system", new_callable=PropertyMock, return_value="test"
+    )
+    @patch(
+        "module_build_service.config.Config.mock_resultsdir",
+        new_callable=PropertyMock,
+        return_value=tests.staged_data_filename("local_builds")
+    )
+    def test_get_buildrequired_modulemds_local_builds(
+        self, local_builds, conf_system, db_session
+    ):
+        tests.clean_database()
+        with tests.app.app_context():
+            module_build_service.utils.load_local_builds(db_session, ["testmodule"])
+
+            resolver = mbs_resolver.GenericResolver.create(db_session, tests.conf, backend="mbs")
+            result = resolver.get_buildrequired_modulemds(
+                "testmodule", "master", "platform:f28:1:00000000")
+            assert 1 == len(result)
+            mmd = result[0]
+            assert "testmodule" == mmd.get_module_name()
+            assert "master" == mmd.get_stream_name()
+            assert 20170816080816 == mmd.get_version()
+            assert "321" == mmd.get_context()