Made sure `manage.py help test` works.

Thanks shige DOT abe AT nasa DOT gov for the report.

Fixes #17477. Refs r16352.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@17284 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/core/management/commands/test.py

@@ -31,13 +31,16 @@ class Command(BaseCommand):
 
     requires_model_validation = False
 
+    def __init__(self):
+        self.test_runner = None
+        super(Command, self).__init__()
+
     def run_from_argv(self, argv):
         """
         Pre-parse the command line to extract the value of the --testrunner
         option. This allows a test runner to define additional command line
         arguments.
         """
-        self.test_runner = None
         option = '--testrunner='
         for arg in argv[2:]:
             if arg.startswith(option):

tests/regressiontests/test_runner/tests.py

@@ -214,6 +214,20 @@ class CustomTestRunnerOptionsTests(AdminScriptTestCase):
         self.assertOutput(out, 'bar:foo:31337')
 
 
+class Ticket17477RegressionTests(AdminScriptTestCase):
+    def setUp(self):
+        self.write_settings('settings.py')
+
+    def tearDown(self):
+        self.remove_settings('settings.py')
+
+    def test_ticket_17477(self):
+        """'manage.py help test' works after r16352."""
+        args = ['help', 'test']
+        out, err = self.run_manage(args)
+        self.assertNoOutput(err)
+
+
 class ModulesTestsPackages(unittest.TestCase):
     def test_get_tests(self):
         "Check that the get_tests helper function can find tests in a directory"