Ignore missing URL parts in NavItem activity check

Closes #169.  If the URL of a navigation item is missing the scheme or
the network location we ignore it in the check.

Author: HiPhish

src/django_simple_nav/nav.py

@@ -141,8 +141,9 @@ def get_active(self, request: HttpRequest) -> bool:
         parsed_request = urlparse(request.build_absolute_uri())
 
         if (
-            parsed_url.scheme != parsed_request.scheme
-            or parsed_url.netloc != parsed_request.netloc
+            (parsed_url.scheme and (parsed_url.scheme != parsed_request.scheme))
+            or
+            (parsed_url.netloc and (parsed_url.netloc != parsed_request.netloc))
         ):
             return False
 

tests/test_navitem.py

@@ -156,6 +156,14 @@ def test_active_different_domain(rf):
     assert item.get_active(req) is False
 
 
+def test_active_no_scheme_no_netloc(rf):
+    item = NavItem(title=..., url="/test/")
+
+    req = rf.get("/test")
+
+    assert item.get_active(req) is True
+
+
 @pytest.mark.parametrize("append_slash", [True, False])
 def test_active_append_slash_setting(append_slash, rf):
     item = NavItem(title=..., url="http://testserver/test")