实现test_mql PNL0002管路动态

tests/test_amesim_pneumatic_line_components.py

@@ -3,11 +3,59 @@ from __future__ import annotations
 import unittest
 
 from PythonModels.components.amesim_pneumatic_line import (
+    AmesimPnl0002Pipe,
     AmesimPnl0003Pipe,
     AmesimPnl00rPipe,
 )
 
 
+class AmesimPnl0002PipeTests(unittest.TestCase):
+    def setUp(self) -> None:
+        self.pipe = AmesimPnl0002Pipe(
+            name="pneumatic_86",
+            diameter_mm=20.0,
+            length_m=2.0,
+            relative_roughness=0.045 / 20.0,
+            pctr_0=100_000.0,
+            Tctr_0=293.15,
+        )
+
+    def test_initial_state_uses_center_compliance(self) -> None:
+        properties = self.pipe.properties()
+
+        self.assertAlmostEqual(self.pipe.volume, 6.283185307179586e-4)
+        self.assertEqual(len(self.pipe.get_state_vector()), 2)
+        self.assertAlmostEqual(properties.p, 100_000.0, delta=1.0e-6)
+        self.assertAlmostEqual(properties.T, 293.15)
+        self.assertAlmostEqual(self.pipe.port_1.p, properties.p)
+        self.assertAlmostEqual(self.pipe.port_2.p, properties.p)
+
+    def test_port_flow_enters_center_from_higher_external_pressure(self) -> None:
+        forward = self.pipe.port_mass_flow(
+            port_pressure_pa=101_000.0,
+            port_temperature_k=293.15,
+        )
+        reverse = self.pipe.port_mass_flow(
+            port_pressure_pa=99_000.0,
+            port_temperature_k=293.15,
+        )
+
+        self.assertGreater(forward, 0.0)
+        self.assertLess(reverse, 0.0)
+
+    def test_connection_derivatives_conserve_two_external_port_flows(self) -> None:
+        properties = self.pipe.properties()
+
+        derivative = self.pipe.derivatives_from_connections(
+            port_1_m_flow=0.2,
+            connected_h_1=properties.h + 1000.0,
+            port_2_m_flow=-0.1,
+            connected_h_2=properties.h - 1000.0,
+        )
+
+        self.assertAlmostEqual(derivative.m, 0.1)
+
+
 class AmesimPnl0003PipeTests(unittest.TestCase):
     def setUp(self) -> None:
         self.pipe = AmesimPnl0003Pipe(