Scope device uniqueness per parent, null type/location for sub-components, hide sub-components from list, flat battery summary for parent devices

tests/test_acceptance.py

@@ -975,3 +975,96 @@ def test_subcomponent_ha_entity_id(client):
     resp = client.get("/device/2")
     assert resp.status_code == 200
     assert b"Hub" in resp.data
+
+
+# ------------------------------------------------------------------ #
+# Sub-component hierarchy — parent_key, null type/location, list hiding
+# ------------------------------------------------------------------ #
+
+def _setup_parent_with_two_children(client):
+    """Hub (top-level, Sensor type, Living Room) with Sensor A and Sensor B."""
+    client.post("/device/add", data={
+        "name": "Hub", "battery_slots": "0", "battery_size": "",
+        "device_type": "Sensor", "location": "Living Room",
+    }, follow_redirects=True)
+    client.post("/device/add", data={
+        "name": "Sensor A", "battery_slots": "1", "battery_size": "AA", "parent_id": "1",
+    }, follow_redirects=True)
+    client.post("/device/add", data={
+        "name": "Sensor B", "battery_slots": "1", "battery_size": "AA", "parent_id": "1",
+    }, follow_redirects=True)
+
+
+def test_device_list_hides_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
+
+
+def test_subcomponent_type_location_null(client):
+    _setup_parent_with_two_children(client)
+    # Sub-component detail shows inherited type/location from parent
+    resp = client.get("/device/2")
+    assert resp.status_code == 200
+    assert b"Sensor" in resp.data
+    assert b"Living Room" in resp.data
+    assert b"inherited" in resp.data
+    # Submitting type/location in edit for sub-component should have no effect
+    client.post("/device/2/edit", data={
+        "name": "Sensor A", "battery_slots": "1",
+        "device_type": "Remote Control", "location": "Bedroom",
+        "parent_id": "1",  # keep sub-component relationship
+    })
+    resp2 = client.get("/device/2")
+    assert b"Remote Control" not in resp2.data
+    assert b"Bedroom" not in resp2.data
+
+
+def test_subcomponent_name_unique_per_parent(client):
+    _setup_parent_with_two_children(client)
+
+    # Duplicate top-level name → 400
+    resp = client.post("/device/add", data={
+        "name": "Hub", "battery_slots": "0", "battery_size": "",
+    })
+    assert resp.status_code == 400
+    assert b"already exists" in resp.data
+
+    # Duplicate child name within same parent → 400
+    resp = client.post("/device/add", data={
+        "name": "Sensor A", "battery_slots": "1", "battery_size": "AA", "parent_id": "1",
+    })
+    assert resp.status_code == 400
+    assert b"already exists" in resp.data
+
+    # Same child name under a DIFFERENT parent → success
+    client.post("/device/add", data={
+        "name": "Hub 2", "battery_slots": "0", "battery_size": "",
+    })  # id=4
+    resp = client.post("/device/add", data={
+        "name": "Sensor A", "battery_slots": "1", "battery_size": "AA", "parent_id": "4",
+    }, follow_redirects=True)
+    assert resp.status_code == 200
+
+
+def test_parent_battery_summary_flat(client):
+    _setup_parent_with_two_children(client)
+    client.post("/battery/add", data={"brand": "Eneloop", "count": "2"})  # ids 1, 2
+    client.post("/device/2/install-one", data={"battery_id": "1"})
+    client.post("/device/3/install-one", data={"battery_id": "2"})
+
+    resp = client.get("/device/1")
+    assert resp.status_code == 200
+    # Flat table has Component column heading
+    assert b"Component" in resp.data
+    # Both batteries appear
+    assert b"Eneloop 001" in resp.data
+    assert b"Eneloop 002" in resp.data
+    # Both child names linked in the component column
+    assert b"Sensor A" in resp.data
+    assert b"Sensor B" in resp.data
+    # Only one "Installed Batteries" heading
+    assert resp.data.count(b"Installed Batteries") == 1