Fix match option to only consider basename when given a path argument

docs/release_notes.rst

@@ -15,6 +15,10 @@ New Features
 * Add support for Python 3.10 (#554).
 * Replace D10X errors with D419 if docstring exists but is empty (#559).
 
+Bug Fixes
+
+* Fix ``--match`` option to only consider filename when matching full paths (#550).
+
 6.1.1 - May 17th, 2021
 ---------------------------
 

src/pydocstyle/config.py

@@ -288,7 +288,7 @@ def _get_property_decorators(conf):
                     # Skip any dirs that do not match match_dir
                     dirs[:] = [d for d in dirs if match_dir(d)]
 
-                    for filename in filenames:
+                    for filename in map(os.path.basename, filenames):
                         if match(filename):
                             full_path = os.path.join(root, filename)
                             yield (
@@ -302,7 +302,7 @@ def _get_property_decorators(conf):
                 match, _ = _get_matches(config)
                 ignore_decorators = _get_ignore_decorators(config)
                 property_decorators = _get_property_decorators(config)
-                if match(name):
+                if match(os.path.basename(name)):
                     yield (
                         name,
                         list(config.checked_codes),

src/tests/test_integration.py

@@ -1489,3 +1489,25 @@ def test_comment_with_noqa_plus_docstring_file(env):
     out, _, code = env.invoke()
     assert '' == out
     assert code == 0
+
+
+def test_match_considers_basenames_for_path_args(env):
+    """Test that `match` option only considers basenames for path arguments.
+
+    The test environment consists of a single empty module `test_a.py`. The
+    match option is set to a pattern that ignores test_ prefixed .py filenames.
+    When pydocstyle is invoked with full path to `test_a.py`, we expect it to
+    succeed since match option will match against just the file name and not
+    full path.
+    """
+    # Ignore .py files prefixed with 'test_'
+    env.write_config(select='D100', match='(?!test_).+.py')
+
+    # Create an empty module (violates D100)
+    with env.open('test_a.py', 'wt') as test:
+        test.write('')
+
+    # env.invoke calls pydocstyle with full path to test_a.py
+    out, _, code = env.invoke(target='test_a.py')
+    assert '' == out
+    assert code == 0