Merge pull request #99 from Ikke/fix-tests-py-382

Use correct local variable name in tests for py-3.8.2

parameterized/test.py

diff --git a/parameterized/test.py b/parameterized/test.py
index 770cab8..c263ded 100644
--- a/parameterized/test.py
+++ b/parameterized/test.py
@@ -251,6 +251,7 @@
             f_locals.get("testMethod") or # Py27
             f_locals.get("function") or # Py33
             f_locals.get("method") or # Py38
+            f_locals.get("testfunction") or # Py382
             None
         )
         if test_method is None: