TST: Update tst paths to pkged paths

* replace relpath in example_module tst fixture.

* Update __main__ rel to install path.

* Update importlib.resources.path incantation to
  a pattern that works on 3.12 and 3.14.

* Use cwd instead of requests.root_dir

Author: rossbar

numpydoc/tests/hooks/test_utils.py

@@ -30,7 +30,7 @@ def test_find_project_root(tmp_path, request, reason_file, files, expected_reaso
         for file in files:
             (tmp_path / file).touch()
     else:
-        expected_dir = request.config.rootdir
+        expected_dir = Path.cwd()
 
     root_dir, reason = utils.find_project_root(files if not files else [tmp_path])
     assert reason == expected_reason

numpydoc/tests/hooks/test_validate_hook.py

@@ -1,24 +1,21 @@
 """Test the numpydoc validate pre-commit hook."""
 
+import importlib.resources
 import inspect
 import re
 from pathlib import Path
 
 import pytest
 
+import numpydoc
 from numpydoc.hooks.validate_docstrings import run_hook
 
 
 @pytest.fixture
 def example_module(request):
-    fullpath = (
-        Path(request.config.rootdir)
-        / "numpydoc"
-        / "tests"
-        / "hooks"
-        / "example_module.py"
-    )
-    return str(fullpath.relative_to(request.config.rootdir))
+    with importlib.resources.path(numpydoc, "tests") as fpath:
+        fullpath = str(fpath / "hooks/example_module.py")
+    return str(fullpath)
 
 
 @pytest.mark.parametrize("config", [None, "fake_dir"])

numpydoc/tests/test_main.py

@@ -1,3 +1,4 @@
+import importlib.resources
 import inspect
 import io
 import sys
@@ -119,12 +120,15 @@ def test_validate_perfect_docstring():
 
 @pytest.mark.parametrize("args", [[], ["--ignore", "SS03"]])
 def test_lint(capsys, args):
-    argv = ["lint", "numpydoc/__main__.py"] + args
+    with importlib.resources.path(numpydoc, "__main__.py") as fpath:
+        strpath = str(fpath)
+
+    argv = ["lint", strpath] + args
     if args:
         expected = ""
         expected_status = 0
     else:
-        expected = "numpydoc/__main__.py:1: SS03 Summary does not end with a period"
+        expected = f"{strpath}:1: SS03 Summary does not end with a period"
         expected_status = 1
 
     return_status = numpydoc.cli.main(argv)