add python version number to db file

this way we can run detox instead of tox
and it will make tox run faster on our dev machines

Change-Id: I9ff327edb1b1d0842ba14fe90784321c4ee27da0

tox.ini

@@ -6,6 +6,7 @@ skipsdist = True
 [testenv]
 usedevelop = True
 install_command = pip install -U -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
+whitelist_externals = find
 setenv =
    VIRTUAL_ENV={envdir}
    OS_TEST_PATH=vitrage/tests/unit
@@ -15,6 +16,7 @@ commands =
     stestr run --serial '{posargs}'
     stestr slowest
     oslo-config-generator --config-file=etc/vitrage/vitrage-config-generator.conf
+    find . -type f -name "test-*.db" -delete
 passenv = http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY
 
 [testenv:pep8]

vitrage/tests/functional/entity_graph/graph_persistor/test_graph_persistor.py

@@ -11,6 +11,7 @@
 # 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 sys
 import time
 
 from oslo_config import cfg
@@ -34,8 +35,8 @@ class TestGraphPersistor(TestFunctionalBase):
         cls.conf.register_opts(cls.PROCESSOR_OPTS, group='entity_graph')
         cls.conf.register_opts(cls.DATASOURCES_OPTS, group='datasources')
         cls.conf.register_opts(database_opts, group='database')
-        cls.conf.set_override('connection', 'sqlite:///test.db',
-                              group='database')
+        cls.conf.set_override('connection', 'sqlite:///test-%s.db'
+                              % sys.version_info[0], group='database')
         cls._db = storage.get_connection_from_config(cls.conf)
         engine = cls._db._engine_facade.get_engine()
         models.Base.metadata.create_all(engine)

vitrage/tests/functional/test_configuration.py

@@ -12,6 +12,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 import os
+import sys
 import yaml
 
 from oslo_db.options import database_opts
@@ -29,7 +30,8 @@ class TestConfiguration(object):
     @classmethod
     def add_db(cls, conf):
         conf.register_opts(database_opts, group='database')
-        db_name = "sqlite:///test_%s.db" % cls.__name__
+        db_name = "sqlite:///test-%s-%s.db" % (cls.__name__,
+                                               sys.version_info[0])
         conf.set_override('connection', db_name, group='database')
         cls._db = storage.get_connection_from_config(conf)
         engine = cls._db._engine_facade.get_engine()