Use dogpile.cache to cache the default_buildroot_groups result

tests/test_builder/test_base.py

@@ -0,0 +1,71 @@
+# Copyright (c) 2017  Red Hat, Inc.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+#
+# Written by Jan Kaluza <jkaluza@redhat.com>
+
+import unittest
+import koji
+
+import module_build_service.models
+import module_build_service.builder
+
+from tests import conf, init_data, db
+
+from module_build_service.builder import GenericBuilder
+from mock import patch
+
+
+class TestGenericBuilder(unittest.TestCase):
+
+    def setUp(self):
+        init_data()
+        self.module = module_build_service.models.ModuleBuild.query.filter_by(id=1).one()
+
+    @patch('module_build_service.pdc.resolve_profiles')
+    def test_default_buildroot_groups_cache(self, resolve_profiles):
+        pdc_groups = {
+            "buildroot": [],
+            "srpm-buildroot": []
+        }
+        resolve_profiles.return_value = pdc_groups
+
+        expected_groups = {
+            "build": [],
+            "srpm-build": []
+        }
+
+        # Call default_buildroot_groups, the result should be cached.
+        ret = GenericBuilder.default_buildroot_groups(db.session, self.module)
+        self.assertEqual(ret, expected_groups)
+        resolve_profiles.assert_called_once()
+        resolve_profiles.reset_mock()
+
+        # Now try calling it again to verify resolve_profiles is not called,
+        # because it is cached.
+        ret = GenericBuilder.default_buildroot_groups(db.session, self.module)
+        self.assertEqual(ret, expected_groups)
+        resolve_profiles.assert_not_called()
+        resolve_profiles.reset_mock()
+
+        # And now try clearing the cache and call it again.
+        GenericBuilder.clear_cache(self.module)
+        ret = GenericBuilder.default_buildroot_groups(db.session, self.module)
+        self.assertEqual(ret, expected_groups)
+        resolve_profiles.assert_called_once()