Use clouds.yaml from devstack for functional tests

devstack produces a file called clouds.yaml already with credentials in
it. Rather than producing our own config file to run functional tests,
just consume the clouds.yaml file that's already there.

Closes-Bug: #1507386
Change-Id: I82c071b2cd903b9578d1f2ec515882c815812692

functional_creds.conf.sample

@@ -1,8 +0,0 @@
-# Credentials for functional testing
-[auth]
-uri = http://10.42.0.50:5000/v2.0
-
-[admin]
-user = admin
-tenant = admin
-pass = secrete

glanceclient/tests/functional/base.py

@@ -10,12 +10,28 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import ConfigParser
 import os
 
+import os_client_config
 from tempest_lib.cli import base
 
 
+def credentials(cloud='devstack-admin'):
+    """Retrieves credentials to run functional tests
+
+    Credentials are either read via os-client-config from the environment
+    or from a config file ('clouds.yaml'). Environment variables override
+    those from the config file.
+
+    devstack produces a clouds.yaml with two named clouds - one named
+    'devstack' which has user privs and one named 'devstack-admin' which
+    has admin privs. This function will default to getting the devstack-admin
+    cloud as that is the current expected behavior.
+    """
+
+    return os_client_config.OpenStackConfig().get_one_cloud(cloud=cloud)
+
+
 class ClientTestBase(base.ClientTestBase):
     """This is a first pass at a simple read only python-glanceclient test.
 
@@ -28,37 +44,17 @@ class ClientTestBase(base.ClientTestBase):
 
     """
 
-    def __init__(self, *args, **kwargs):
-        super(ClientTestBase, self).__init__(*args, **kwargs)
-
-        # Collecting of credentials:
-        #
-        # Support the existence of a functional_creds.conf for
-        # testing. This makes it possible to use a config file.
-        self.username = os.environ.get('OS_USERNAME')
-        self.password = os.environ.get('OS_PASSWORD')
-        self.tenant_name = os.environ.get('OS_TENANT_NAME')
-        self.uri = os.environ.get('OS_AUTH_URL')
-        config = ConfigParser.RawConfigParser()
-        if config.read('functional_creds.conf'):
-            # the OR pattern means the environment is preferred for
-            # override
-            self.username = self.username or config.get('admin', 'user')
-            self.password = self.password or config.get('admin', 'pass')
-            self.tenant_name = self.tenant_name or config.get('admin',
-                                                              'tenant')
-            self.uri = self.uri or config.get('auth', 'uri')
-
     def _get_clients(self):
+        self.creds = credentials().get_auth_args()
         cli_dir = os.environ.get(
             'OS_GLANCECLIENT_EXEC_DIR',
             os.path.join(os.path.abspath('.'), '.tox/functional/bin'))
 
         return base.CLIClient(
-            username=self.username,
-            password=self.password,
-            tenant_name=self.tenant_name,
-            uri=self.uri,
+            username=self.creds['username'],
+            password=self.creds['password'],
+            tenant_name=self.creds['project_name'],
+            uri=self.creds['auth_url'],
             cli_dir=cli_dir)
 
     def glance(self, *args, **kwargs):

glanceclient/tests/functional/hooks/post_test_hook.sh

@@ -30,23 +30,6 @@ export GLANCECLIENT_DIR="$BASE/new/python-glanceclient"
 
 sudo chown -R jenkins:stack $GLANCECLIENT_DIR
 
-# Get admin credentials
-cd $BASE/new/devstack
-source openrc admin admin
-# pass the appropriate variables via a config file
-CREDS_FILE=$GLANCECLIENT_DIR/functional_creds.conf
-cat <<EOF > $CREDS_FILE
-# Credentials for functional testing
-[auth]
-uri = $OS_AUTH_URL
-
-[admin]
-user = $OS_USERNAME
-tenant = $OS_TENANT_NAME
-pass = $OS_PASSWORD
-
-EOF
-
 # Go to the glanceclient dir
 cd $GLANCECLIENT_DIR
 

glanceclient/tests/functional/test_readonly_glance.py

@@ -42,7 +42,7 @@ class SimpleReadOnlyGlanceClientTest(base.ClientTestBase):
                           'this-does-not-exist')
 
     def test_member_list_v1(self):
-        tenant_name = '--tenant-id %s' % self.tenant_name
+        tenant_name = '--tenant-id %s' % self.creds['project_name']
         out = self.glance('--os-image-api-version 1 member-list',
                           params=tenant_name)
         endpoints = self.parser.listing(out)

test-requirements.txt

@@ -6,6 +6,7 @@ hacking<0.11,>=0.10.0
 coverage>=3.6
 discover
 mock>=1.2
+os-client-config>=1.4.0,!=1.6.2
 oslosphinx>=2.5.0 # Apache-2.0
 sphinx!=1.2.0,!=1.3b1,<1.3,>=1.1.2
 testrepository>=0.0.18