TST: refactor data path for xml tests (pandas-dev#53766)

* TST: refactor data path for xml tests

* fix style

* fix typo

Author: fangchenli

pandas/conftest.py

@@ -30,6 +30,7 @@
 from decimal import Decimal
 import operator
 import os
+from pathlib import Path
 from typing import (
     Callable,
     Hashable,
@@ -1167,6 +1168,16 @@ def strict_data_files(pytestconfig):
     return pytestconfig.getoption("--strict-data-files")
 
 
+@pytest.fixture
+def tests_path() -> Path:
+    return Path(__file__).parent / "tests"
+
+
+@pytest.fixture
+def tests_io_data_path(tests_path) -> Path:
+    return tests_path / "io" / "data"
+
+
 @pytest.fixture
 def datapath(strict_data_files: str) -> Callable[..., str]:
     """

pandas/io/xml.py

@@ -5,6 +5,7 @@
 from __future__ import annotations
 
 import io
+from os import PathLike
 from typing import (
     TYPE_CHECKING,
     Any,
@@ -326,10 +327,13 @@ def _iterparse_nodes(self, iterparse: Callable) -> list[dict[str, str | None]]:
             )
 
         if (not hasattr(self.path_or_buffer, "read")) and (
-            not isinstance(self.path_or_buffer, str)
+            not isinstance(self.path_or_buffer, (str, PathLike))
             or is_url(self.path_or_buffer)
             or is_fsspec_url(self.path_or_buffer)
-            or self.path_or_buffer.startswith(("<?xml", "<"))
+            or (
+                isinstance(self.path_or_buffer, str)
+                and self.path_or_buffer.startswith(("<?xml", "<"))
+            )
             or infer_compression(self.path_or_buffer, "infer") is not None
         ):
             raise ParserError(

pandas/tests/io/xml/conftest.py

@@ -0,0 +1,31 @@
+import pytest
+
+
+@pytest.fixture
+def xml_data_path(tests_io_data_path):
+    return tests_io_data_path / "xml"
+
+
+@pytest.fixture
+def xml_books(xml_data_path):
+    return xml_data_path / "books.xml"
+
+
+@pytest.fixture
+def xml_doc_ch_utf(xml_data_path):
+    return xml_data_path / "doc_ch_utf.xml"
+
+
+@pytest.fixture
+def xml_baby_names(xml_data_path):
+    return xml_data_path / "baby_names.xml"
+
+
+@pytest.fixture
+def kml_cta_rail_lines(xml_data_path):
+    return xml_data_path / "cta_rail_lines.kml"
+
+
+@pytest.fixture
+def xsl_flatten_doc(xml_data_path):
+    return xml_data_path / "flatten_doc.xsl"