Show sub-components as indented rows in device list

tests/test_acceptance.py

@@ -1116,13 +1116,24 @@ def _setup_parent_with_two_children(client):
     }, follow_redirects=True)
 
 
-def test_device_list_hides_subcomponents(client):
+def test_device_list_nests_subcomponents(client):
     _setup_parent_with_two_children(client)
     resp = client.get("/device/")
     assert resp.status_code == 200
     assert b"Hub" in resp.data
-    assert b"Sensor A" not in resp.data
-    assert b"Sensor B" not in resp.data
+    # sub-components render as indented child rows under the parent
+    assert b"Sensor A" in resp.data
+    assert b"Sensor B" in resp.data
+    assert "↳".encode() in resp.data
+    # parent name is searchable on child rows
+    assert b'data-name="hub sensor a"' in resp.data
+
+
+def test_assign_page_shows_parent_prefix(client):
+    _setup_rc_car(client)
+    resp = client.get("/battery/1/assign")
+    assert resp.status_code == 200
+    assert b"RC Car Set /" in resp.data
 
 
 def test_subcomponent_type_location_null(client):