Issue #27787: No longer call deleted test_main().
diff --git a/Lib/test/test_httplib.py b/Lib/test/test_httplib.py
index 5c500cb..1768a34 100644
--- a/Lib/test/test_httplib.py
+++ b/Lib/test/test_httplib.py
@@ -1713,4 +1713,4 @@
 
 
 if __name__ == '__main__':
-    test_main()
+    unittest.main(verbosity=2)