Fixed #26981 -- Added DiscoverRunner.get_test_runner_kwargs().

django/test/runner.py

@@ -503,13 +503,17 @@ class DiscoverRunner(object):
     def get_resultclass(self):
         return DebugSQLTextTestResult if self.debug_sql else None
 
-    def run_suite(self, suite, **kwargs):
-        resultclass = self.get_resultclass()
-        return self.test_runner(
-            verbosity=self.verbosity,
+    def get_test_runner_kwargs(self):
+        return dict(
             failfast=self.failfast,
-            resultclass=resultclass,
-        ).run(suite)
+            resultclass=self.get_resultclass(),
+            verbosity=self.verbosity,
+        )
+
+    def run_suite(self, suite, **kwargs):
+        kwargs = self.get_test_runner_kwargs()
+        runner = self.test_runner(**kwargs)
+        return runner.run(suite)
 
     def teardown_databases(self, old_config, **kwargs):
         """

docs/releases/1.11.txt

@@ -255,7 +255,8 @@ Templates
 Tests
 ~~~~~
 
-* ...
+* Added :meth:`.DiscoverRunner.get_test_runner_kwargs` to allow customizing the
+  keyword arguments passed to the test runner.
 
 URLs
 ~~~~

docs/topics/testing/advanced.txt

@@ -568,6 +568,13 @@ Methods
 
     Returns the result produced by the running the test suite.
 
+.. method:: DiscoverRunner.get_test_runner_kwargs()
+
+    .. versionadded:: 1.11
+
+    Returns the keyword arguments to instantiate the
+    ``DiscoverRunner.test_runner`` with.
+
 .. method:: DiscoverRunner.teardown_databases(old_config, **kwargs)
 
     Destroys the test databases, restoring pre-test conditions.

tests/test_runner/test_discover_runner.py

@@ -157,6 +157,9 @@ class DiscoverRunnerTest(TestCase):
         self.assertIn('test_2', suite[8].id(),
                       msg="Methods of unittest cases should be reversed.")
 
+    def test_overridable_get_test_runner_kwargs(self):
+        self.assertIsInstance(DiscoverRunner().get_test_runner_kwargs(), dict)
+
     def test_overridable_test_suite(self):
         self.assertEqual(DiscoverRunner().test_suite, TestSuite)