Comment cleanup

tests/test_ui_kit.py

@@ -42,7 +42,7 @@ def test_the_navbar_and_footer_are_on_every_page():
 
 @pytest.mark.django_db
 def test_the_service_cannot_reorder_the_chrome():
-    """navbar, then main, then footer — a service that wants otherwise has to
+    """navbar, then main, then footer: a service that wants otherwise has to
     stop extending the kit, which is the point."""
     html = Client().get("/privacy/").content.decode()
     assert html.index("<nav") < html.index("<main") < html.index("<footer")
@@ -94,6 +94,24 @@ def test_page_title_links_its_parent():
     assert "W-1" in html
 
 
+def test_page_title_walks_the_whole_trail_when_given_one():
+    """A page two levels down names its grandparent, so the trail reaches the
+    section root instead of starting halfway along it."""
+    html = render_to_string("yksa/ui/_page_title.html", {
+        "title": "Status", "parent": "W-1", "parent_url": "/widgets/w-1/",
+        "grandparent": "Widgets", "grandparent_url": "/widgets/",
+    })
+    assert html.index("/widgets/\"") < html.index("/widgets/w-1/")
+    assert html.count("<a ") == 2
+
+
+def test_page_title_without_a_grandparent_is_unchanged():
+    html = render_to_string("yksa/ui/_page_title.html", {
+        "title": "W-1", "parent": "Widgets", "parent_url": "/widgets/",
+    })
+    assert html.count("<a ") == 1
+
+
 # --- the estate-wide rules --------------------------------------------------