Prohibit the importation of a list of libraries

Some modules can't be imported and used in Yardstick. For example,
"ansible" has GPLv3 license and can't be used as a library in this
project without modifying Yardstick license.

JIRA: YARDSTICK-896

Change-Id: I9d6bec0493ac50f1051235cc77e81059dfc3e01c
Signed-off-by: Rodolfo Alonso Hernandez <rodolfo.alonso.hernandez@intel.com>

1 files changed, 46 insertions, 0 deletions

diff --git a/yardstick/tests/unit/common/test_import_tools.py b/yardstick/tests/unit/common/test_import_tools.py
new file mode 100644
index 000000000..c8fe5fde0
--- /dev/null
+++ b/yardstick/tests/unit/common/test_import_tools.py
@@ -0,0 +1,46 @@
+# Copyright (c) 2018 Intel Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import unittest
+
+from yardstick.common import exceptions as y_exc
+from yardstick.common import import_tools
+
+
+@import_tools.decorator_banned_modules
+class DummyClass(object):
+    pass
+
+
+class DecoratorBannedModule(unittest.TestCase):
+
+    MODULE = 'yardstick.tests.unit.common.banned_modules.banned_module'
+
+    def test_passt(self):
+        self.assertIsNotNone(DummyClass())
+
+    def test_banned_module(self):
+        import_tools.BANNED_MODULES[self.MODULE] = 'Banned module!!'
+        from yardstick.tests.unit.common.banned_modules import importing_module
+        self.addCleanup(self._remove_module)
+
+        with self.assertRaises(y_exc.YardstickBannedModuleImported) as exc:
+            importing_module.ImportingClass()
+
+        msg = ('Module "%s" cannnot be imported. Reason: "Banned module!!"'
+               % self.MODULE)
+        self.assertEqual(msg, str(exc.exception))
+
+    def _remove_module(self):
+        del import_tools.BANNED_MODULES[self.MODULE]