add a test

hauntsaninja · hauntsaninja · commit f49ceda86f5b · 2021-08-07T18:30:16.000-07:00
diff --git a/test-data/unit/check-errorcodes.test b/test-data/unit/check-errorcodes.test
@@ -841,11 +841,15 @@ if good_union:
 bad_union: Union[Foo, object] = Foo()
 if bad_union:  # E: "__main__.bad_union" has type "Union[__main__.Foo, builtins.object]" of which no members implement __bool__ or __len__ so it could always be true in boolean context  [truthy-bool]
     pass
+if not bad_union:
+    pass
 
 def f():
     pass
 if f:  # E: Function "def () -> Any" could always be true in boolean context  [truthy-bool]
     pass
+if not f:
+    pass
 conditional_result = 'foo' if f else 'bar'  # E: Function "def () -> Any" could always be true in boolean context  [truthy-bool]
 
 lst: List[int] = []
