Run CI tests on Python 3.13, fix tests

.github/workflows/check.yml

@@ -19,7 +19,8 @@ jobs:
       fail-fast: false
       matrix:
         py:
-          - "3.12.0-rc.2"
+          - "3.13.0-alpha.2"
+          - "3.12"
           - "3.11"
           - "3.10"
           - "3.9"

docs/changelog/2673.feature.rst

@@ -0,0 +1 @@
+The tests now pass on the CI with Python 3.13.0a2 - by :user:`hroncok`.

src/virtualenv/seed/wheels/embed/__init__.py

@@ -36,6 +36,11 @@
         "setuptools": "setuptools-69.0.2-py3-none-any.whl",
         "wheel": "wheel-0.42.0-py3-none-any.whl",
     },
+    "3.13": {
+        "pip": "pip-23.3.1-py3-none-any.whl",
+        "setuptools": "setuptools-69.0.2-py3-none-any.whl",
+        "wheel": "wheel-0.42.0-py3-none-any.whl",
+    },
 }
 MAX = "3.7"
 

tests/unit/create/test_creator.py

@@ -217,7 +217,11 @@ def list_to_str(iterable):
         assert result == "None"
 
     git_ignore = (dest / ".gitignore").read_text(encoding="utf-8")
-    assert git_ignore.splitlines() == ["# created by virtualenv automatically", "*"]
+    if creator_key == "venv" and sys.version_info >= (3, 13):
+        comment = "# Created by venv; see https://docs.python.org/3/library/venv.html"
+    else:
+        comment = "# created by virtualenv automatically"
+    assert git_ignore.splitlines() == [comment, "*"]
 
 
 def test_create_vcs_ignore_exists(tmp_path):

tests/unit/create/via_global_ref/builtin/testing/path.py

@@ -47,11 +47,15 @@ class PathMockABC(FakeDataABC, Path):
     """Mocks the behavior of `Path`"""
 
     _flavour = getattr(Path(), "_flavour", None)
-
     if hasattr(_flavour, "altsep"):
         # Allows to pass some tests for Windows via PosixPath.
         _flavour.altsep = _flavour.altsep or "\\"
 
+    # Python 3.13 renamed _flavour to pathmod
+    pathmod = getattr(Path(), "pathmod", None)
+    if hasattr(pathmod, "altsep"):
+        pathmod.altsep = pathmod.altsep or "\\"
+
     def exists(self):
         return self.is_file() or self.is_dir()