1 files changed, 85 insertions, 0 deletions
diff --git a/tests/unit/test_requirements.py b/tests/unit/test_requirements.py
new file mode 100644
index 00000000..b31110b4
--- /dev/null
+++ b/tests/unit/test_requirements.py
@@ -0,0 +1,85 @@
+# Copyright (C) 2016 Nippon Telegraph and Telephone 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 logging
+import os
+import sys
+import unittest
+
+import pkg_resources
+from pip.req import parse_requirements
+from pip.download import PipSession
+from six.moves import urllib
+
+from nose.tools import ok_
+
+
+LOG = logging.getLogger(__name__)
+
+MOD_DIR = os.path.dirname(sys.modules[__name__].__file__)
+_RYU_REQUIREMENTS_FILES = [
+    '../../tools/pip-requires',
+    '../../tools/optional-requires',
+]
+RYU_REQUIREMENTS_FILES = [
+    os.path.join(MOD_DIR, f) for f in _RYU_REQUIREMENTS_FILES]
+
+OPENSTACK_REQUIREMENTS_REPO = 'https://github.com/openstack/requirements'
+OPENSTACK_REQUIREMENTS_URL = (
+    'https://github.com/openstack/requirements/raw/master/')
+_OPENSTACK_REQUIREMENTS_FILES = [
+    'requirements.txt',
+    'global-requirements.txt',
+]
+OPENSTACK_REQUIREMENTS_FILES = [
+    urllib.parse.urljoin(OPENSTACK_REQUIREMENTS_URL, f)
+    for f in _OPENSTACK_REQUIREMENTS_FILES]
+
+
+def _get_requirements(files):
+    requirements = {}
+    for f in files:
+        req = parse_requirements(f, session=PipSession())
+        for r in req:
+            requirements[r.name] = str(r.req)
+
+    return requirements
+
+OPENSTACK_REQUIREMENTS = _get_requirements(OPENSTACK_REQUIREMENTS_FILES)
+RYU_REQUIREMENTS = _get_requirements(RYU_REQUIREMENTS_FILES)
+
+
+class TestRequirements(unittest.TestCase):
+    """
+    Test whether the requirements of Ryu has no conflict with that
+    of other projects.
+    """
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_with_openstack_requirements(self):
+        try:
+            for name, req in OPENSTACK_REQUIREMENTS.items():
+                if name in RYU_REQUIREMENTS:
+                    ok_(pkg_resources.require(req))
+        except pkg_resources.VersionConflict as e:
+            LOG.exception(
+                'Some requirements of Ryu are conflicting with that of '
+                'OpenStack project: %s' % OPENSTACK_REQUIREMENTS_REPO)
+            raise e