diff --git a/tests/unit/test_collector.py b/tests/unit/test_collector.py
index e34104707ba..f9167ae4ef1 100644
--- a/tests/unit/test_collector.py
+++ b/tests/unit/test_collector.py
@@ -3,6 +3,7 @@
 import logging
 import os
 import re
+import sys
 import uuid
 from pathlib import Path
 from textwrap import dedent
@@ -377,17 +378,6 @@ def test_clean_url_path_with_local_path(path: str, expected: str) -> None:
             "git+https://example.com/repo.git@at%40 space#egg=my-package-1.0",
             "git+https://example.com/repo.git@at%40%20space#egg=my-package-1.0",
         ),
-        # URL with Windows drive letter. The `:` after the drive
-        # letter should not be quoted. The trailing `/` should be
-        # removed.
-        pytest.param(
-            "file:///T:/path/with spaces/",
-            "file:///T:/path/with%20spaces",
-            marks=pytest.mark.skipif(
-                "sys.platform != 'win32' or "
-                "sys.version_info == (3, 13, 0, 'beta', 2)"
-            ),
-        ),
         # URL with Windows drive letter, running on non-windows
         # platform. The `:` after the drive should be quoted.
         pytest.param(
@@ -395,15 +385,6 @@ def test_clean_url_path_with_local_path(path: str, expected: str) -> None:
             "file:///T%3A/path/with%20spaces/",
             marks=pytest.mark.skipif("sys.platform == 'win32'"),
         ),
-        # Test a VCS URL with a Windows drive letter and revision.
-        pytest.param(
-            "git+file:///T:/with space/repo.git@1.0#egg=my-package-1.0",
-            "git+file:///T:/with%20space/repo.git@1.0#egg=my-package-1.0",
-            marks=pytest.mark.skipif(
-                "sys.platform != 'win32' or "
-                "sys.version_info == (3, 13, 0, 'beta', 2)"
-            ),
-        ),
         # Test a VCS URL with a Windows drive letter and revision,
         # running on non-windows platform.
         pytest.param(
@@ -417,6 +398,66 @@ def test_ensure_quoted_url(url: str, clean_url: str) -> None:
     assert _ensure_quoted_url(url) == clean_url
 
 
+# versions containing fix/backport from https://github.com/python/cpython/pull/113563
+has_new_urlun_behaviour = (
+    # https://github.com/python/cpython/commit/387ff96e95b9f8a8cc7e646523ba3175b1350669
+    (sys.version_info[:2] == (3, 12) and sys.version_info >= (3, 12, 4))
+    or
+    # https://github.com/python/cpython/commit/872000606271c52d989e53fe4cc9904343d81855
+    (sys.version_info[:2] == (3, 13) and sys.version_info >= (3, 13, 0, "beta", 3))
+)
+
+
+@pytest.mark.skipif(
+    sys.platform != "win32" or has_new_urlun_behaviour,
+    reason="testing windows behaviour on older CPython",
+)
+@pytest.mark.parametrize(
+    ("url", "clean_url"),
+    (
+        (
+            # URL with Windows drive letter. The `:` after the drive
+            # letter should not be quoted. The trailing `/` should be
+            # removed.
+            "file:///T:/path/with spaces/",
+            "file:///T:/path/with%20spaces",
+        ),
+        (
+            # Test a VCS URL with a Windows drive letter and revision.
+            "git+file:///T:/with space/repo.git@1.0#egg=my-package-1.0",
+            "git+file:///T:/with%20space/repo.git@1.0#egg=my-package-1.0",
+        ),
+    ),
+)
+def test_ensure_quoted_url_windows_old(url: str, clean_url: str) -> None:
+    assert _ensure_quoted_url(url) == clean_url
+
+
+@pytest.mark.skipif(
+    sys.platform != "win32" or not has_new_urlun_behaviour,
+    reason="testing windows behaviour on newer cpython",
+)
+@pytest.mark.parametrize(
+    ("url", "clean_url"),
+    (
+        (
+            # URL with Windows drive letter. The `:` after the drive
+            # letter should not be quoted. The trailing `/` should be
+            # removed.
+            "file:///T:/path/with spaces/",
+            "file://///T:/path/with%20spaces",
+        ),
+        (
+            # Test a VCS URL with a Windows drive letter and revision.
+            "git+file:///T:/with space/repo.git@1.0#egg=my-package-1.0",
+            "git+file://///T:/with%20space/repo.git@1.0#egg=my-package-1.0",
+        ),
+    ),
+)
+def test_ensure_quoted_url_windows_new(url: str, clean_url: str) -> None:
+    assert _ensure_quoted_url(url) == clean_url
+
+
 def _test_parse_links_data_attribute(
     anchor_html: str, attr: str, expected: Optional[str]
 ) -> Link: