Create unittest runner env for storlet_middleware

This patch enables to run a few unitttest for storlet_middleware
for OpenStack Swift with similer way of native Swift middleware
in tox environment.

N.B. To enable this, this patch changes a few things in the setup.cfg
in the top of directories but this doesn't care whole things for
python software packaging so...

TODO: Review and Fix setup.cfg to be correct packaging info

Change-Id: I8210af17300c7f3d664d858d54fd804dcd300fae

setup.cfg

@@ -22,7 +22,8 @@ classifier =
 
 [files]
 packages =
-    storlets
+    storlet_middleware
+    storlet_gateway
 
 [build_sphinx]
 source-dir = doc/source

storlet_gateway

@@ -0,0 +1 @@
+Engine/swift/storlet_gateway

storlet_middleware

@@ -0,0 +1 @@
+Engine/swift/storlet_middleware

tests/unit/test_storlet_middleware.py

@@ -0,0 +1,74 @@
+# Copyright (c) 2010-2015 OpenStack Foundation
+#
+# 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.
+
+from os.path import join
+from storlet_middleware import storlet_handler
+from swift.common.swob import Request
+from swift.common.swob import Response
+import unittest
+
+
+DEFAULT_CONFIG = {
+    'storlet_container': 'storlet',
+    'storlet_dependency': 'dependency',
+    'storlet_timeout': '40',
+    'storlet_gateway_module':
+        'storlet_gateway.storlet_stub_gateway:StorletStubBase',
+    'storlet_gateway_conf': '/etc/swift/storlet_stub_gateway.conf',
+    'execution_server': 'proxy'}
+
+
+class FakeApp(object):
+    def __call__(self, env, start_response):
+        req = Request(env)
+        return Response(request=req, body='FAKE APP')(
+            env, start_response)
+
+
+class TestStorletsMiddleware(unittest.TestCase):
+    def setUp(self):
+        self.got_statuses = []
+
+    def tearDown(self):
+        pass
+
+    def get_app(self, app, global_conf, **local_conf):
+        factory = storlet_handler.filter_factory(global_conf, **local_conf)
+        return factory(app)
+
+    def start_response(self, status, headers):
+        self.got_statuses.append(status)
+
+    def test_load_app(self):
+        try:
+            self.get_app(FakeApp(), DEFAULT_CONFIG)
+        except Exception:
+            self.fail('Application loading got an error')
+
+    def test_GET_without_storlets(self):
+        def basic_get(path):
+            req = Request.blank(path, environ={'REQUEST_METHOD': 'GET'})
+            app = self.get_app(FakeApp(), DEFAULT_CONFIG)
+            resp = app(req.environ, self.start_response)
+            self.assertEqual('200 OK', self.got_statuses[-1])
+            self.assertEqual(resp, ['FAKE APP'])
+
+        for target in ('AUTH_a', 'AUTH_a/c', 'AUTH_a/c/o'):
+            path = join('/', 'v1', target)
+            basic_get(path)
+
+
+if __name__ == '__main__':
+    unittest.main()

tests/unit/unit_test.py

@@ -1,27 +0,0 @@
-'''-------------------------------------------------------------------------
-Copyright IBM Corp. 2015, 2015 All Rights Reserved
-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.
--------------------------------------------------------------------------'''
-
-'''
-@author: cdoron
-'''
-import subprocess
-
-
-def main():
-    subprocess.call(["pwd"])
-
-'''------------------------------------------------------------------------'''
-if __name__ == "__main__":
-    main()

tox.ini

@@ -8,7 +8,10 @@ usedevelop = True
 install_command = pip install -U {opts} {packages}
 setenv =
    VIRTUAL_ENV={envdir}
-deps = -r{toxinidir}/test-requirements.txt
+deps =
+  -r{toxinidir}/test-requirements.txt
+  PyECLib==1.0.7
+  https://launchpad.net/swift/kilo/2.3.0/+download/swift-2.3.0.tar.gz
 #commands = python setup.py test --slowest --testr-args='{posargs}'
 commands = ./.unittests