Add run_tests flag to run only selenium tests.

The new Jenkins job to run the selenium tests is running all of the
python27 unittests as well which have their own job. Add a new flag,
--only-selenium, to run only the selenium tests. This will allow
Jenkins to better partition work and prevent redundancy.

Change-Id: I70aac3b843434736159c4266b41f6ebd1f5109c7

horizon/test.py

@@ -91,6 +91,8 @@ class RequestFactoryWithMessages(RequestFactory):
         return req
 
 
+@unittest.skipIf(os.environ.get('SKIP_UNITTESTS', False),
+                     "The SKIP_UNITTESTS env variable is set.")
 class TestCase(django_test.TestCase):
     """
     Specialized base test case class for Horizon which gives access to

run_tests.sh

@@ -28,6 +28,7 @@ function usage {
   echo "  -y, --pylint             Just run pylint"
   echo "  -q, --quiet              Run non-interactively. (Relatively) quiet."
   echo "                           Implies -V if -N is not set."
+  echo "  --only-selenium          Run only the Selenium unit tests"
   echo "  --with-selenium          Run unit tests including Selenium tests"
   echo "  --runserver              Run the Django development server for"
   echo "                           openstack_dashboard in the virtual"
@@ -65,7 +66,8 @@ never_venv=0
 quiet=0
 restore_env=0
 runserver=0
-selenium=0
+only_selenium=0
+with_selenium=0
 testargs=""
 with_coverage=0
 makemessages=0
@@ -87,7 +89,8 @@ function process_option {
     -c|--coverage) with_coverage=1;;
     -m|--manage) manage=1;;
     --makemessages) makemessages=1;;
-    --with-selenium) selenium=1;;
+    --only-selenium) only_selenium=1;;
+    --with-selenium) with_selenium=1;;
     --docs) just_docs=1;;
     --runserver) runserver=1;;
     --backup-environment) backup_env=1;;
@@ -259,8 +262,11 @@ function install_venv {
 function run_tests {
   sanity_check
 
-  if [ $selenium -eq 1 ]; then
+  if [ $with_selenium -eq 1 ]; then
     export WITH_SELENIUM=1
+  elif [ $only_selenium -eq 1 ]; then
+    export WITH_SELENIUM=1
+    export SKIP_UNITTESTS=1
   fi
 
   echo "Running Horizon application tests"