复用test_mql P4邻接拓扑装配

tests/test_test_mql_pnl0001_segment.py

@@ -278,6 +278,35 @@ class TestMqlPn3P4NodeChamberSegmentTests(unittest.TestCase):
             snapshot.p4_primary_line.T,
         )
 
+    def test_p4_closure_uses_structured_neighborhood(self) -> None:
+        closure = self.system.pn3_p4_node_chamber_segment_closure_from_spec(
+            self.spec,
+            inlet_node_pressure_pa=15.31e6,
+            resistance_boundary_pressure_pa=15.29e6,
+        )
+        neighborhood = self.system.p4_node_neighborhood(closure.components.p4_node.alias)
+
+        self.assertEqual(
+            closure.components.p4_primary_line.name,
+            neighborhood.primary.line_alias,
+        )
+        self.assertEqual(
+            closure.components.p4_primary_chamber.name,
+            neighborhood.primary.chamber_alias,
+        )
+        self.assertEqual(
+            closure.components.p4_port1_line.name,
+            neighborhood.port_1.line_alias,
+        )
+        self.assertEqual(
+            closure.components.p4_port3_line.name,
+            neighborhood.port_3.line_alias,
+        )
+        self.assertEqual(
+            closure.components.node_orifice.name,
+            neighborhood.port_4.orifice_alias,
+        )
+
     def test_p4_node_flow_cancels_between_pnvo_pnl0002_and_primary_line(self) -> None:
         closure = self.system.pn3_p4_node_chamber_segment_closure_from_spec(
             self.spec,