Add tempest tests.

Add test_DB_store tests that includes:
create artifact, download/upload blob/folder.

Change-Id: I8e77fe639e73a4107433c1bcbbd601c6d089786c

glare_tempest_plugin/README.rst

@@ -0,0 +1,18 @@
+============================
+Tempest Integration of Glare
+============================
+
+This directory contains Tempest tests to cover the Glare project.
+
+To list all glare tempest cases, go to tempest directory, then run:
+
+    $ testr list-tests glare
+
+To run glare tempest plugin tests using tox, go to tempest directory, then run:
+
+    $ tox -eall-plugin glare
+
+And, to run a specific test:
+
+    TBD
+

glare_tempest_plugin/tests/api/test_blobs.py

@@ -0,0 +1,79 @@
+# Copyright 2017 Nokia, Inc.
+# 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 hashlib
+import testtools
+
+
+from glare_tempest_plugin.tests.api import base
+from pprint import pformat
+
+
+class TestDownloadSanity(base.BaseArtifactTest):
+
+    @testtools.testcase.attr('TestDownloadSanity')
+    def test_blob_dict(self):
+        """Uploading data to a folder and then download it back"""
+
+        # Create a test artifact
+        art = self.artifacts_client.create_artifact('sample_artifact',
+                                                    'sample_art1')
+        data = "data" * 100
+        art = self.artifacts_client.upload_blob(
+            'sample_artifact', art['id'], '/dict_of_blobs/new_blob', data)
+
+        art_blob = art['dict_of_blobs']['new_blob']
+        self.assertEqual(400, art_blob['size'])
+        self.assertEqual('active', art_blob['status'], pformat(art_blob))
+
+        encoded_data = data.encode('UTF-8')
+        md5 = hashlib.md5(encoded_data).hexdigest()
+        sha1 = hashlib.sha1(encoded_data).hexdigest()
+        sha256 = hashlib.sha256(encoded_data).hexdigest()
+        self.assertEqual(md5, art_blob['md5'])
+        self.assertEqual(sha1, art_blob['sha1'])
+        self.assertEqual(sha256, art_blob['sha256'])
+
+        # Download data from the folder (dict_of_blobs)
+        self.assertEqual(data,
+                         self.artifacts_client.download_blob(
+                             'sample_artifact', art['id'],
+                             '/dict_of_blobs/new_blob'), pformat(art))
+
+    @testtools.testcase.attr('TestDownloadSanity')
+    def test_blob_download(self):
+        data = 'some_arbitrary_testing_data'
+        art = self.artifacts_client.create_artifact('sample_artifact',
+                                                    'test_af')
+
+        # upload data
+        art = self.artifacts_client.upload_blob('sample_artifact',
+                                                art['id'], 'blob', data)
+
+        art_blob = art['blob']
+        self.assertEqual('active', art_blob['status'], pformat(art))
+        encoded_data = data.encode('UTF-8')
+        md5 = hashlib.md5(encoded_data).hexdigest()
+        sha1 = hashlib.sha1(encoded_data).hexdigest()
+        sha256 = hashlib.sha256(encoded_data).hexdigest()
+        self.assertEqual(md5, art_blob['md5'])
+        self.assertEqual(sha1, art_blob['sha1'])
+        self.assertEqual(sha256, art_blob['sha256'])
+
+        #  Download data
+        self.assertEqual(data,
+                         self.artifacts_client.download_blob(
+                             'sample_artifact', art['id'],
+                             '/blob'), pformat(art))

glare_tempest_plugin/tests/api/test_list_artifact.py

@@ -13,14 +13,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-
 import testtools
 
 
 from glare_tempest_plugin.tests.api import base
 from tempest import config
 
-
 CONF = config.CONF