Add return type annotations for mypy

Author: thartline35

testing/test_argparsing_repr_fix.py

@@ -1,20 +1,20 @@
 """
 Test case for issue #13817: AttributeError with invalid flag in pytest_addoption
 """
-
 from __future__ import annotations
 
+import pytest
+
 from _pytest.config.argparsing import ArgumentError
 from _pytest.config.argparsing import Parser
-import pytest
 
 
 # Suppress warning about using private pytest API (we're testing pytest itself)
 @pytest.mark.filterwarnings("ignore::pytest.PytestDeprecationWarning")
 class TestArgumentReprFix:
     """Test that Argument.__repr__ handles missing dest attribute."""
 
-    def test_invalid_option_without_dashes(self):
+    def test_invalid_option_without_dashes(self) -> None:
         """Test that invalid option names produce helpful error messages."""
         parser = Parser()
 
@@ -30,7 +30,7 @@ def test_invalid_option_without_dashes(self):
         assert "AttributeError" not in error_message
         assert "has no attribute 'dest'" not in error_message
 
-    def test_invalid_short_option(self):
+    def test_invalid_short_option(self) -> None:
         """Test that invalid short option names produce helpful error messages."""
         parser = Parser()
 
@@ -44,11 +44,11 @@ def test_invalid_short_option(self):
             or "invalid short option string" in error_message
         )
 
-    def test_valid_option_works(self):
+    def test_valid_option_works(self) -> None:
         """Test that valid options still work correctly."""
         parser = Parser()
         parser.addoption("--shuffle", action="store_true", help="Shuffle tests")
 
         options = parser._anonymous.options
         assert len(options) > 0
-        assert "--shuffle" in options[0].names()
+        assert "--shuffle" in options[0].names()