diff --git a/numpydoc/tests/hooks/test_utils.py b/numpydoc/tests/hooks/test_utils.py
index 5db63762..7aa11cf3 100644
--- a/numpydoc/tests/hooks/test_utils.py
+++ b/numpydoc/tests/hooks/test_utils.py
@@ -23,7 +23,10 @@ def test_find_project_root(tmp_path, request, reason_file, files, expected_reaso
         (tmp_path / reason_file).touch()
 
     if files:
-        expected_dir = Path("/") if expected_reason == "file system root" else tmp_path
+        expected_dir = (
+            Path(tmp_path.anchor) if expected_reason == "file system root" else tmp_path
+        )
+
         for file in files:
             (tmp_path / file).touch()
     else:
diff --git a/numpydoc/tests/hooks/test_validate_hook.py b/numpydoc/tests/hooks/test_validate_hook.py
index 7d4d2378..85fc346e 100644
--- a/numpydoc/tests/hooks/test_validate_hook.py
+++ b/numpydoc/tests/hooks/test_validate_hook.py
@@ -25,42 +25,42 @@ def test_validate_hook(example_module, config, capsys):
     """Test that a file is correctly processed in the absence of config files."""
 
     expected = inspect.cleandoc(
-        """
-        numpydoc/tests/hooks/example_module.py:4: ES01 No extended summary found
+        f"""
+        {example_module!s}:4: ES01 No extended summary found
 
-        numpydoc/tests/hooks/example_module.py:4: PR01 Parameters {'name'} not documented
+        {example_module!s}:4: PR01 Parameters {{'name'}} not documented
 
-        numpydoc/tests/hooks/example_module.py:4: SA01 See Also section not found
+        {example_module!s}:4: SA01 See Also section not found
 
-        numpydoc/tests/hooks/example_module.py:4: EX01 No examples section found
+        {example_module!s}:4: EX01 No examples section found
 
-        numpydoc/tests/hooks/example_module.py:8: ES01 No extended summary found
+        {example_module!s}:8: ES01 No extended summary found
 
-        numpydoc/tests/hooks/example_module.py:8: SA01 See Also section not found
+        {example_module!s}:8: SA01 See Also section not found
 
-        numpydoc/tests/hooks/example_module.py:8: EX01 No examples section found
+        {example_module!s}:8: EX01 No examples section found
 
-        numpydoc/tests/hooks/example_module.py:11: GL08 The object does not have a docstring
+        {example_module!s}:11: GL08 The object does not have a docstring
 
-        numpydoc/tests/hooks/example_module.py:17: ES01 No extended summary found
+        {example_module!s}:17: ES01 No extended summary found
 
-        numpydoc/tests/hooks/example_module.py:17: PR01 Parameters {'**kwargs'} not documented
+        {example_module!s}:17: PR01 Parameters {{'**kwargs'}} not documented
 
-        numpydoc/tests/hooks/example_module.py:17: PR07 Parameter "*args" has no description
+        {example_module!s}:17: PR07 Parameter "*args" has no description
 
-        numpydoc/tests/hooks/example_module.py:17: SA01 See Also section not found
+        {example_module!s}:17: SA01 See Also section not found
 
-        numpydoc/tests/hooks/example_module.py:17: EX01 No examples section found
+        {example_module!s}:17: EX01 No examples section found
 
-        numpydoc/tests/hooks/example_module.py:26: SS05 Summary must start with infinitive verb, not third person (e.g. use "Generate" instead of "Generates")
+        {example_module!s}:26: SS05 Summary must start with infinitive verb, not third person (e.g. use "Generate" instead of "Generates")
 
-        numpydoc/tests/hooks/example_module.py:26: ES01 No extended summary found
+        {example_module!s}:26: ES01 No extended summary found
 
-        numpydoc/tests/hooks/example_module.py:26: SA01 See Also section not found
+        {example_module!s}:26: SA01 See Also section not found
 
-        numpydoc/tests/hooks/example_module.py:26: EX01 No examples section found
+        {example_module!s}:26: EX01 No examples section found
 
-        numpydoc/tests/hooks/example_module.py:30: GL08 The object does not have a docstring
+        {example_module!s}:30: GL08 The object does not have a docstring
         """
     )
 
@@ -76,18 +76,18 @@ def test_validate_hook_with_ignore(example_module, capsys):
     """
 
     expected = inspect.cleandoc(
-        """
-        numpydoc/tests/hooks/example_module.py:4: PR01 Parameters {'name'} not documented
+        f"""
+        {example_module!s}:4: PR01 Parameters {{'name'}} not documented
 
-        numpydoc/tests/hooks/example_module.py:11: GL08 The object does not have a docstring
+        {example_module!s}:11: GL08 The object does not have a docstring
 
-        numpydoc/tests/hooks/example_module.py:17: PR01 Parameters {'**kwargs'} not documented
+        {example_module!s}:17: PR01 Parameters {{'**kwargs'}} not documented
 
-        numpydoc/tests/hooks/example_module.py:17: PR07 Parameter "*args" has no description
+        {example_module!s}:17: PR07 Parameter "*args" has no description
 
-        numpydoc/tests/hooks/example_module.py:26: SS05 Summary must start with infinitive verb, not third person (e.g. use "Generate" instead of "Generates")
+        {example_module!s}:26: SS05 Summary must start with infinitive verb, not third person (e.g. use "Generate" instead of "Generates")
 
-        numpydoc/tests/hooks/example_module.py:30: GL08 The object does not have a docstring
+        {example_module!s}:30: GL08 The object does not have a docstring
         """
     )
 
@@ -123,14 +123,14 @@ def test_validate_hook_with_toml_config(example_module, tmp_path, capsys):
         )
 
     expected = inspect.cleandoc(
-        """
-        numpydoc/tests/hooks/example_module.py:4: PR01 Parameters {'name'} not documented
+        f"""
+        {example_module!s}:4: PR01 Parameters {{'name'}} not documented
 
-        numpydoc/tests/hooks/example_module.py:17: PR01 Parameters {'**kwargs'} not documented
+        {example_module!s}:17: PR01 Parameters {{'**kwargs'}} not documented
 
-        numpydoc/tests/hooks/example_module.py:17: PR07 Parameter "*args" has no description
+        {example_module!s}:17: PR07 Parameter "*args" has no description
 
-        numpydoc/tests/hooks/example_module.py:30: GL08 The object does not have a docstring
+        {example_module!s}:30: GL08 The object does not have a docstring
         """
     )
 
@@ -158,14 +158,14 @@ def test_validate_hook_with_setup_cfg(example_module, tmp_path, capsys):
         )
 
     expected = inspect.cleandoc(
-        """
-        numpydoc/tests/hooks/example_module.py:4: PR01 Parameters {'name'} not documented
+        f"""
+        {example_module!s}:4: PR01 Parameters {{'name'}} not documented
 
-        numpydoc/tests/hooks/example_module.py:17: PR01 Parameters {'**kwargs'} not documented
+        {example_module!s}:17: PR01 Parameters {{'**kwargs'}} not documented
 
-        numpydoc/tests/hooks/example_module.py:17: PR07 Parameter "*args" has no description
+        {example_module!s}:17: PR07 Parameter "*args" has no description
 
-        numpydoc/tests/hooks/example_module.py:30: GL08 The object does not have a docstring
+        {example_module!s}:30: GL08 The object does not have a docstring
         """
     )
 
@@ -203,10 +203,10 @@ def test_validate_hook_exclude_option_pyproject(example_module, tmp_path, capsys
         )
 
     expected = inspect.cleandoc(
-        """
-        numpydoc/tests/hooks/example_module.py:4: PR01 Parameters {'name'} not documented
+        f"""
+        {example_module!s}:4: PR01 Parameters {{'name'}} not documented
 
-        numpydoc/tests/hooks/example_module.py:30: GL08 The object does not have a docstring
+        {example_module!s}:30: GL08 The object does not have a docstring
         """
     )
 
@@ -234,12 +234,12 @@ def test_validate_hook_exclude_option_setup_cfg(example_module, tmp_path, capsys
         )
 
     expected = inspect.cleandoc(
-        """
-        numpydoc/tests/hooks/example_module.py:4: PR01 Parameters {'name'} not documented
+        f"""
+        {example_module!s}:4: PR01 Parameters {{'name'}} not documented
 
-        numpydoc/tests/hooks/example_module.py:17: PR01 Parameters {'**kwargs'} not documented
+        {example_module!s}:17: PR01 Parameters {{'**kwargs'}} not documented
 
-        numpydoc/tests/hooks/example_module.py:17: PR07 Parameter "*args" has no description
+        {example_module!s}:17: PR07 Parameter "*args" has no description
         """
     )
 
@@ -250,7 +250,7 @@ def test_validate_hook_exclude_option_setup_cfg(example_module, tmp_path, capsys
 
 @pytest.mark.parametrize(
     "regex, expected_code",
-    [(r".*(/|\\\\)example.*\.py", 0), (r".*/non_existent_match.*\.py", 1)],
+    [(".*(/|\\\\)example.*\.py", 0), (".*/non_existent_match.*\.py", 1)],
 )
 def test_validate_hook_exclude_files_option_pyproject(
     example_module, regex, expected_code, tmp_path
@@ -287,7 +287,7 @@ def test_validate_hook_exclude_files_option_pyproject(
 
 @pytest.mark.parametrize(
     "regex, expected_code",
-    [(r".*(/|\\\\)example.*\.py", 0), (r".*/non_existent_match.*\.py", 1)],
+    [(".*(/|\\\\)example.*\.py", 0), (".*/non_existent_match.*\.py", 1)],
 )
 def test_validate_hook_exclude_files_option_setup_cfg(
     example_module, regex, expected_code, tmp_path
diff --git a/pyproject.toml b/pyproject.toml
index cfc58d90..ae6e7b96 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -168,6 +168,7 @@ attr = 'numpydoc.__version__'
 [tool.setuptools.package-data]
 numpydoc = [
     'tests/test_*.py',
+    'tests/hooks/test_*.py',
     'tests/tinybuild/Makefile',
     'tests/tinybuild/index.rst',
     'tests/tinybuild/*.py',