Add ``if __name__ == '__main__'`` to some test files where it didn't take a lot
of effort to do so.
diff --git a/Lib/test/test_frozen.py b/Lib/test/test_frozen.py
index 621720c..e981fb3 100644
--- a/Lib/test/test_frozen.py
+++ b/Lib/test/test_frozen.py
@@ -38,3 +38,8 @@
 
 def test_main():
     run_unittest(FrozenTests)
+
+
+
+if __name__ == '__main__':
+    test_main()