config: Remove ConfigFileFinder 'parent' and 'tail' attributes

These attributes are only needed within the
`.generate_possible_local_files()` method.  Therefore, just obtain the
current working directory at the beginning of the method and reduce the
lifetime state of the `ConfigFileFinder` object.

1 files changed, 4 insertions, 3 deletions

diff --git a/tests/unit/test_config_file_finder.py b/tests/unit/test_config_file_finder.py
index c0231f8..d03118a 100644
--- a/tests/unit/test_config_file_finder.py
+++ b/tests/unit/test_config_file_finder.py
@@ -61,11 +61,12 @@ def test_cli_config_double_read():
 ])
 def test_generate_possible_local_files(cwd, expected):
     """Verify generation of all possible config paths."""
+    finder = config.ConfigFileFinder('flake8', [])
+
     with mock.patch.object(os, 'getcwd', return_value=cwd):
-        finder = config.ConfigFileFinder('flake8', [])
+        config_files = list(finder.generate_possible_local_files())
 
-    assert (list(finder.generate_possible_local_files())
-            == expected)
+    assert config_files == expected
 
 
 @pytest.mark.parametrize('extra_config_files,expected', [