Update test runner

runtests.py

@@ -35,21 +35,19 @@ def runtests(*test_args):
     if hasattr(django, "setup"):
         django.setup()
 
-    if not test_args:
-        test_args = ["tests"]
-
     parent = os.path.dirname(os.path.abspath(__file__))
     sys.path.insert(0, parent)
 
     try:
-        from django.test.simple import DjangoTestSuiteRunner as TestRunner
-        if not test_args:
-            test_args = ["tests"]
+        from django.test.runner import DiscoverRunner
+        runner_class = DiscoverRunner
+        test_args = ["wiki.tests"]
     except ImportError:
-        from django.test.runner import DiscoverRunner as TestRunner
-        if not test_args:
-            test_args = ["wiki.tests"]
-    failures = TestRunner(
+        from django.test.simple import DjangoTestSuiteRunner
+        runner_class = DjangoTestSuiteRunner
+        test_args = ["tests"]
+
+    failures = runner_class(
         verbosity=1, interactive=True, failfast=False).run_tests(test_args)
     sys.exit(failures)