From 0960b4a690c765b832afd934f92256c67601a43f Mon Sep 17 00:00:00 2001
From: Lonercode <penpalclassmate@gmail.com>
Date: Sat, 1 Nov 2025 16:09:09 +0100
Subject: [PATCH 1/2] TST:replace ensure_clean with temp_file in
 test_file_buffer_url.py

---
 .../io/parser/common/test_file_buffer_url.py  | 62 +++++++++----------
 1 file changed, 31 insertions(+), 31 deletions(-)

diff --git a/pandas/tests/io/parser/common/test_file_buffer_url.py b/pandas/tests/io/parser/common/test_file_buffer_url.py
index cef57318195ec..12ab446c8f0ae 100644
--- a/pandas/tests/io/parser/common/test_file_buffer_url.py
+++ b/pandas/tests/io/parser/common/test_file_buffer_url.py
@@ -97,25 +97,25 @@ def test_nonexistent_path(all_parsers):
 
 @pytest.mark.skipif(WASM, reason="limited file system access on WASM")
 @td.skip_if_windows  # os.chmod does not work in windows
-def test_no_permission(all_parsers):
+def test_no_permission(all_parsers, temp_file):
     # GH 23784
     parser = all_parsers
 
     msg = r"\[Errno 13\]"
-    with tm.ensure_clean() as path:
-        os.chmod(path, 0)  # make file unreadable
+    path = temp_file
+    os.chmod(path, 0)  # make file unreadable
 
-        # verify that this process cannot open the file (not running as sudo)
-        try:
-            with open(path, encoding="utf-8"):
-                pass
-            pytest.skip("Running as sudo.")
-        except PermissionError:
+    # verify that this process cannot open the file (not running as sudo)
+    try:
+        with open(path, encoding="utf-8"):
             pass
+        pytest.skip("Running as sudo.")
+    except PermissionError:
+        pass
 
-        with pytest.raises(PermissionError, match=msg) as e:
-            parser.read_csv(path)
-        assert path == e.value.filename
+    with pytest.raises(PermissionError, match=msg) as e:
+        parser.read_csv(path)
+    assert path == e.value.filename
 
 
 @pytest.mark.parametrize(
@@ -269,19 +269,19 @@ def test_internal_eof_byte(all_parsers):
     tm.assert_frame_equal(result, expected)
 
 
-def test_internal_eof_byte_to_file(all_parsers):
+def test_internal_eof_byte_to_file(all_parsers, temp_file):
     # see gh-16559
     parser = all_parsers
     data = b'c1,c2\r\n"test \x1a    test", test\r\n'
     expected = DataFrame([["test \x1a    test", " test"]], columns=["c1", "c2"])
     path = f"__{uuid.uuid4()}__.csv"
 
-    with tm.ensure_clean(path) as path:
-        with open(path, "wb") as f:
-            f.write(data)
+    path2 = temp_file.parent / path
+    with open(path2, "wb") as f:
+        f.write(data)
 
-        result = parser.read_csv(path)
-        tm.assert_frame_equal(result, expected)
+    result = parser.read_csv(path2)
+    tm.assert_frame_equal(result, expected)
 
 
 def test_file_handle_string_io(all_parsers):
@@ -372,7 +372,7 @@ def test_read_csv_file_handle(all_parsers, io_class, encoding):
     assert not handle.closed
 
 
-def test_memory_map_compression(all_parsers, compression):
+def test_memory_map_compression(all_parsers, compression, temp_file):
     """
     Support memory map for compressed files.
 
@@ -381,16 +381,16 @@ def test_memory_map_compression(all_parsers, compression):
     parser = all_parsers
     expected = DataFrame({"a": [1], "b": [2]})
 
-    with tm.ensure_clean() as path:
-        expected.to_csv(path, index=False, compression=compression)
+    path = temp_file
+    expected.to_csv(path, index=False, compression=compression)
 
-        if parser.engine == "pyarrow":
-            msg = "The 'memory_map' option is not supported with the 'pyarrow' engine"
-            with pytest.raises(ValueError, match=msg):
-                parser.read_csv(path, memory_map=True, compression=compression)
-            return
+    if parser.engine == "pyarrow":
+        msg = "The 'memory_map' option is not supported with the 'pyarrow' engine"
+        with pytest.raises(ValueError, match=msg):
+            parser.read_csv(path, memory_map=True, compression=compression)
+        return
 
-        result = parser.read_csv(path, memory_map=True, compression=compression)
+    result = parser.read_csv(path, memory_map=True, compression=compression)
 
     tm.assert_frame_equal(
         result,
@@ -442,12 +442,12 @@ def test_context_manageri_user_provided(all_parsers, datapath):
 
 
 @skip_pyarrow  # ParserError: Empty CSV file
-def test_file_descriptor_leak(all_parsers):
+def test_file_descriptor_leak(all_parsers, temp_file):
     # GH 31488
     parser = all_parsers
-    with tm.ensure_clean() as path:
-        with pytest.raises(EmptyDataError, match="No columns to parse from file"):
-            parser.read_csv(path)
+    path = temp_file
+    with pytest.raises(EmptyDataError, match="No columns to parse from file"):
+        parser.read_csv(path)
 
 
 def test_memory_map(all_parsers, csv_dir_path):

From 3cd8d89abf13421769b94aff4766d47c400b6b25 Mon Sep 17 00:00:00 2001
From: Lonercode <penpalclassmate@gmail.com>
Date: Sat, 1 Nov 2025 17:02:13 +0100
Subject: [PATCH 2/2] TST:replace ensure_clean with temp_file in
 test_file_buffer_url.py

---
 pandas/tests/io/parser/common/test_file_buffer_url.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pandas/tests/io/parser/common/test_file_buffer_url.py b/pandas/tests/io/parser/common/test_file_buffer_url.py
index 12ab446c8f0ae..c88489fcdd229 100644
--- a/pandas/tests/io/parser/common/test_file_buffer_url.py
+++ b/pandas/tests/io/parser/common/test_file_buffer_url.py
@@ -115,7 +115,7 @@ def test_no_permission(all_parsers, temp_file):
 
     with pytest.raises(PermissionError, match=msg) as e:
         parser.read_csv(path)
-    assert path == e.value.filename
+    assert str(path.resolve()) == e.value.filename
 
 
 @pytest.mark.parametrize(