unittest.TestLoader creates a TestSuite before calling load_tests. Issue 7799.
diff --git a/Lib/test/test_unittest.py b/Lib/test/test_unittest.py
index f24117c..8314262 100644
--- a/Lib/test/test_unittest.py
+++ b/Lib/test/test_unittest.py
@@ -272,12 +272,14 @@
load_tests_args = []
def load_tests(loader, tests, pattern):
+ self.assertIsInstance(tests, unittest.TestSuite)
load_tests_args.extend((loader, tests, pattern))
return tests
m.load_tests = load_tests
loader = unittest.TestLoader()
suite = loader.loadTestsFromModule(m)
+ self.assertIsInstance(suite, unittest.TestSuite)
self.assertEquals(load_tests_args, [loader, suite, None])
load_tests_args = []