Moved is_absolute to os dependent test

Author: jsignell

tests/test_utils.py

@@ -235,8 +235,6 @@ def test_is_absolute_href(self) -> None:
             ("item.json", False),
             ("./item.json", False),
             ("../item.json", False),
-            ("/home/someuser/item.json", True),
-            ("file:///home/someuser/item.json", True),
             ("http://stacspec.org/item.json", True),
         ]
 
@@ -252,6 +250,7 @@ def test_is_absolute_href_os_aware(self) -> None:
         test_cases = [
             ("/item.json", not incl_drive_letter),
             ("/home/someuser/Downloads/item.json", not incl_drive_letter),
+            ("file:///home/someuser/Downloads/item.json", True),
             ("d:/item.json", is_windows),
             ("c:/files/more_files/item.json", is_windows),
         ]