windows fix for real this time

Author: wimglenn

tests/test_date_introspection.py

@@ -1,3 +1,5 @@
+import os
+
 import pytest
 
 from aocd.exceptions import AocdError
@@ -64,7 +66,8 @@ def test_ipynb_fail_no_numbers_in_ipynb_filename(mocker):
 
 
 def test_no_numbers_in_py_filename_but_date_in_abspath(mocker):
-    fake_stack = [("adventofcode/2022/02/main.py", 1, "<test>", "from aocd import data")]
+    fname = os.sep.join(["adventofcode", "2022", "02", "main.py"])
+    fake_stack = [(fname, 1, "<test>", "from aocd import data")]
     mocker.patch("aocd.get.traceback.extract_stack", return_value=fake_stack)
     day, year = get_day_and_year()
     assert day == 2