Fix sphinx expected output test (#155)

* Change the expected output of a test to match the current output.

* Require Sphinx >= 3.2.0 for tests as one test relies on the expected Sphinx output which differs across versions.

Author: adamtheturtle

setup.cfg

@@ -34,6 +34,7 @@ test =
     typing_extensions >= 3.5
     dataclasses; python_version == "3.6"
     sphobjinv >= 2.0
+    Sphinx >= 3.2.0
 type_comments =
     typed_ast >= 1.4.0; python_version < "3.8"
 

tests/test_sphinx_autodoc_typehints.py

@@ -250,7 +250,7 @@ class InnerClass
 
               Inner class.
 
-              _InnerClass__dunder_inner_method(x)
+              __dunder_inner_method(x)
 
                  Dunder inner method.
 
@@ -270,7 +270,7 @@ class InnerClass
                  Return type:
                     "str"
 
-           _Class__dunder_method(x)
+           __dunder_method(x)
 
               Dunder method docstring.