验收四路模型并优化拓扑求解性能

tests/test_amesim_pnor001_component.py

@@ -52,6 +52,22 @@ class AmesimPnor001ComponentTests(unittest.TestCase):
         self.assertEqual(residuals["pressure_flow_relation"].value, 0.0)
         self.assertEqual(set(orifice.component_result_values()), {"cm", "gasvel"})
 
+    def test_exact_repeated_flow_characteristics_are_cached(self) -> None:
+        orifice = AmesimPnor001("pnor_1", self.medium)
+        orifice._one_way_flow_characteristics.cache_clear()
+
+        first = orifice._one_way_flow_characteristics(
+            upstream_pressure=500000.0,
+            downstream_pressure=100000.0,
+            upstream_temperature=293.15,
+        )
+        after_first = orifice._one_way_flow_characteristics.cache_info()
+        second = orifice._one_way_flow_characteristics(
+            upstream_pressure=500000.0,
+            downstream_pressure=100000.0,
+            upstream_temperature=293.15,
+        )
+
     def test_mass_flow_is_bidirectional_by_pressure_order(self) -> None:
         orifice = AmesimPnor001("pnor_1", self.medium)