modernize runtests to fix app loading

runtests.py

@@ -1,10 +1,13 @@
 #!/usr/bin/env python
+import django
+import os
+import sys
+from django.conf import settings
+from django.core.management import execute_from_command_line
+
 from django.conf import settings, global_settings as default_settings
 from django.core.management import call_command
 from os.path import dirname, realpath
-import django
-import sys
-import os
 
 
 # Give feedback on used versions
@@ -14,47 +17,38 @@ sys.stderr.write('Using Django version {0} from {1}\n'.format(
     os.path.dirname(os.path.abspath(django.__file__)))
 )
 
-
-# Detect location and available modules
-module_root = dirname(realpath(__file__))
-
-# Inline settings file
-settings.configure(
-    DEBUG = False,  # will be False anyway by DjangoTestRunner.
-    TEMPLATE_DEBUG = False,
-    DATABASES = {
-        'default': {
-            'ENGINE': 'django.db.backends.sqlite3',
-            'NAME': ':memory:'
-        }
-    },
-    TEMPLATE_LOADERS = (
-        'django.template.loaders.app_directories.Loader',
-    ),
-    TEMPLATE_CONTEXT_PROCESSORS = default_settings.TEMPLATE_CONTEXT_PROCESSORS + (
-        'django.core.context_processors.request',
-    ),
-    INSTALLED_APPS = (
-        'django.contrib.auth',
-        'django.contrib.contenttypes',
-        'django.contrib.messages',
-        'django.contrib.sites',
-        'django.contrib.admin',
-        'polymorphic',
-    ),
-    SITE_ID = 3,
-)
-
-call_command('syncdb', verbosity=1, interactive=False)
+if not settings.configured:
+    settings.configure(
+        DEBUG = True,
+        TEMPLATE_DEBUG = True,
+        DATABASES = {
+            'default': {
+                'ENGINE': 'django.db.backends.sqlite3',
+                'NAME': ':memory:'
+            }
+        },
+        TEMPLATE_LOADERS = (
+            'django.template.loaders.app_directories.Loader',
+        ),
+        TEMPLATE_CONTEXT_PROCESSORS = default_settings.TEMPLATE_CONTEXT_PROCESSORS + (
+            'django.core.context_processors.request',
+        ),
+        INSTALLED_APPS = (
+            'django.contrib.auth',
+            'django.contrib.contenttypes',
+            'django.contrib.messages',
+            'django.contrib.sites',
+            'django.contrib.admin',
+            'polymorphic',
+        ),
+        MIDDLEWARE_CLASSES = (),
+        SITE_ID = 3,
+    )
 
 
-# ---- app start
-verbosity = 2 if '-v' in sys.argv else 1
+def runtests():
+    argv = sys.argv[:1] + ['test', 'polymorphic', '--traceback'] + sys.argv[1:]
+    execute_from_command_line(argv)
 
-from django.test.utils import get_runner
-TestRunner = get_runner(settings)  # DjangoTestSuiteRunner
-runner = TestRunner(verbosity=verbosity, interactive=True, failfast=False)
-failures = runner.run_tests(['polymorphic'])
-
-if failures:
-    sys.exit(bool(failures))
+if __name__ == '__main__':
+    runtests()