chore: improve vulture maintenance path

tests/test_utils.py

@@ -39,6 +39,12 @@ def test_absolute_outside(self, tmp_cwd):
         assert formatted == filepath
         assert formatted.is_absolute()
 
+    def test_path_is_cwd(self, tmp_cwd):
+        filepath = pathlib.Path.cwd()
+        formatted = utils.format_path(filepath)
+        assert formatted == pathlib.Path(".")
+        assert not formatted.is_absolute()
+
 
 def check_decorator_names(code, expected_names):
     decorator_names = []

vulture/utils.py

@@ -45,27 +45,27 @@ def _safe_eval(node, default):
             return default
 
 
-def condition_is_always_false(condition):
+def condition_is_always_false(condition: ast.AST) -> bool:
     return not _safe_eval(condition, True)
 
 
-def condition_is_always_true(condition):
+def condition_is_always_true(condition: ast.AST) -> bool:
     return _safe_eval(condition, False)
 
 
-def is_ast_string(node):
+def is_ast_string(node: ast.AST) -> bool:
     return isinstance(node, ast.Constant) and isinstance(node.value, str)
 
 
-def format_path(path):
+def format_path(path: pathlib.Path) -> pathlib.Path:
     try:
         return path.relative_to(pathlib.Path.cwd())
     except ValueError:
         # Path is not below the current directory.
         return path
 
 
-def get_decorator_name(decorator):
+def get_decorator_name(decorator: ast.expr) -> str:
     if isinstance(decorator, ast.Call):
         decorator = decorator.func
     try: