fix the type check error in the pipeline checks

Author: x612skm

mypy/test/testconfigparser.py

@@ -5,7 +5,7 @@
 from mypy.config_parser import parse_config_file
 
 class TestConfigParser(TestCase):
-    def test_parse_config_file_with_single_file(self):
+    def test_parse_config_file_with_single_file(self) -> None:
         """A single file should be correctly parsed."""
         with tempfile.TemporaryDirectory() as tmpdirname:
             config_path = os.path.join(tmpdirname, "test_config.ini")
@@ -30,7 +30,7 @@ def test_parse_config_file_with_single_file(self):
 
             self.assertEqual(options.files, ["file1.py"])
 
-    def test_parse_config_file_with_no_spaces(self):
+    def test_parse_config_file_with_no_spaces(self) -> None:
         """Files listed without spaces should be correctly parsed."""
         with tempfile.TemporaryDirectory() as tmpdirname:
             config_path = os.path.join(tmpdirname, "test_config.ini")
@@ -55,7 +55,7 @@ def test_parse_config_file_with_no_spaces(self):
 
             self.assertEqual(options.files, ["file1.py", "file2.py", "file3.py"])
 
-    def test_parse_config_file_with_extra_spaces(self):
+    def test_parse_config_file_with_extra_spaces(self) -> None:
         """Files with extra spaces should be correctly parsed."""
         with tempfile.TemporaryDirectory() as tmpdirname:
             config_path = os.path.join(tmpdirname, "test_config.ini")
@@ -80,7 +80,7 @@ def test_parse_config_file_with_extra_spaces(self):
 
             self.assertEqual(options.files, ["file1.py", "file2.py", "file3.py"])
 
-    def test_parse_config_file_with_empty_files_key(self):
+    def test_parse_config_file_with_empty_files_key(self) -> None:
         """An empty files key should result in an empty list."""
         with tempfile.TemporaryDirectory() as tmpdirname:
             config_path = os.path.join(tmpdirname, "test_config.ini")
@@ -105,7 +105,7 @@ def test_parse_config_file_with_empty_files_key(self):
 
             self.assertEqual(options.files, [])
 
-    def test_parse_config_file_with_only_comma(self):
+    def test_parse_config_file_with_only_comma(self) -> None:
         """A files key with only a comma should raise an error."""
         with tempfile.TemporaryDirectory() as tmpdirname:
             config_path = os.path.join(tmpdirname, "test_config.ini")
@@ -131,7 +131,7 @@ def test_parse_config_file_with_only_comma(self):
 
             self.assertIn("Invalid config", str(cm.exception))
 
-    def test_parse_config_file_with_only_whitespace(self):
+    def test_parse_config_file_with_only_whitespace(self) -> None:
         """A files key with only whitespace should result in an empty list."""
         with tempfile.TemporaryDirectory() as tmpdirname:
             config_path = os.path.join(tmpdirname, "test_config.ini")
@@ -156,7 +156,7 @@ def test_parse_config_file_with_only_whitespace(self):
 
             self.assertEqual(options.files, [])
 
-    def test_parse_config_file_with_mixed_valid_and_invalid_entries(self):
+    def test_parse_config_file_with_mixed_valid_and_invalid_entries(self) -> None:
         """Mix of valid and invalid filenames should raise an error."""
         with tempfile.TemporaryDirectory() as tmpdirname:
             config_path = os.path.join(tmpdirname, "test_config.ini")
@@ -182,7 +182,7 @@ def test_parse_config_file_with_mixed_valid_and_invalid_entries(self):
 
             self.assertIn("Invalid config", str(cm.exception))
 
-    def test_parse_config_file_with_newlines_between_files(self):
+    def test_parse_config_file_with_newlines_between_files(self) -> None:
         """Newlines between file entries should be correctly handled."""
         with tempfile.TemporaryDirectory() as tmpdirname:
             config_path = os.path.join(tmpdirname, "test_config.ini")