Add base for functional tests

This adds the basic functional testing structure and initial support for the
filesystem driver.

Change-Id: Ia7f03b9ed91cc38a12d33479f75af167b45caeb0

.testr.conf

@@ -2,7 +2,7 @@
 test_command=OS_STDOUT_CAPTURE=${OS_STDOUT_CAPTURE:-1} \
              OS_STDERR_CAPTURE=${OS_STDERR_CAPTURE:-1} \
              OS_TEST_TIMEOUT=${OS_TEST_TIMEOUT:-160} \
-             ${PYTHON:-python} -m subunit.run discover -t ./ ./glance_store/tests/unit $LISTOPT $IDOPTION
+             ${PYTHON:-python} -m subunit.run discover -t ./ ./glance_store/tests $LISTOPT $IDOPTION
 
 test_id_option=--load-list $IDFILE
 test_list_option=--list

glance_store/tests/functional/base.py

@@ -0,0 +1,88 @@
+# Copyright 2015 OpenStack Foundation
+# 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.
+
+from io import BytesIO
+
+import glance_store
+from oslo_config import cfg
+import testtools
+
+CONF = cfg.CONF
+
+STORES = ['file', ]
+
+UUID1 = '961973d8-3360-4364-919e-2c197825dbb4'
+UUID2 = 'e03cf3b1-3070-4497-a37d-9703edfb615b'
+UUID3 = '0d7f89b2-e236-45e9-b081-561cd3102e92'
+UUID4 = '165e9681-ea56-46b0-a84c-f148c752ef8b'
+IMAGE_BITS = b'I am a bootable image, I promise'
+
+
+class Base(testtools.TestCase):
+
+    def __init__(self, driver_name, *args, **kwargs):
+        super(Base, self).__init__(*args, **kwargs)
+        self.driver_name = driver_name
+
+        glance_store.register_opts(CONF)
+
+    def setUp(self):
+        super(Base, self).setUp()
+
+        if self.driver_name not in STORES:
+            self.skipTest('Not running %s store tests' % self.driver_name)
+
+        CONF.set_override('stores', [self.driver_name], group='glance_store')
+        glance_store.create_stores()
+        self.store = glance_store.backend._load_store(CONF, self.driver_name)
+        self.store.configure()
+
+
+class BaseFunctionalTests(Base):
+
+    def test_add(self):
+        image_file = BytesIO(IMAGE_BITS)
+        loc, written, _, _ = self.store.add(UUID1, image_file, len(IMAGE_BITS))
+        self.assertEqual(len(IMAGE_BITS), written)
+
+    def test_delete(self):
+        image_file = BytesIO(IMAGE_BITS)
+        loc, written, _, _ = self.store.add(UUID2, image_file, len(IMAGE_BITS))
+        location = glance_store.location.get_location_from_uri(loc)
+
+        self.store.delete(location)
+
+    def test_get_size(self):
+        image_file = BytesIO(IMAGE_BITS)
+        loc, written, _, _ = self.store.add(UUID3, image_file, len(IMAGE_BITS))
+        location = glance_store.location.get_location_from_uri(loc)
+
+        size = self.store.get_size(location)
+        self.assertEqual(len(IMAGE_BITS), size)
+
+    def test_get(self):
+        image_file = BytesIO(IMAGE_BITS)
+        loc, written, _, _ = self.store.add(UUID3, image_file, len(IMAGE_BITS))
+        location = glance_store.location.get_location_from_uri(loc)
+
+        image, size = self.store.get(location)
+
+        self.assertEqual(len(IMAGE_BITS), size)
+
+        data = b''
+        for chunk in image:
+            data += chunk
+
+        self.assertEqual(IMAGE_BITS, data)

glance_store/tests/functional/test_functional.py

@@ -0,0 +1,44 @@
+# Copyright 2015 OpenStack Foundation
+# 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.
+
+
+import logging
+import shutil
+import tempfile
+
+from oslo_config import cfg
+
+from glance_store.tests.functional import base
+
+CONF = cfg.CONF
+
+logging.basicConfig()
+
+
+class TestFilesystem(base.BaseFunctionalTests):
+
+    def __init__(self, *args, **kwargs):
+        super(TestFilesystem, self).__init__('file', *args, **kwargs)
+
+    def setUp(self):
+        self.tmp_image_dir = tempfile.mkdtemp(prefix='glance_store_')
+        CONF.set_override('filesystem_store_datadir',
+                          self.tmp_image_dir,
+                          group='glance_store')
+        super(TestFilesystem, self).setUp()
+
+    def tearDown(self):
+        shutil.rmtree(self.tmp_image_dir)
+        super(TestFilesystem, self).tearDown()

tox.ini

@@ -26,6 +26,11 @@ commands = python setup.py testr --coverage --testr-args='^(?!.*test.*coverage).
 [testenv:venv]
 commands = {posargs}
 
+[testenv:functional]
+setenv = OS_TEST_PATH=./glance_store/tests/functional
+passenv = OS_*
+commands = python setup.py testr --slowest --testr-args='glance_store.tests.functional'
+
 [flake8]
 # TODO(dmllr): Analyze or fix the warnings blacklisted below
 # H301  one import per line