修正test_mql气室压力约定

tests/test_amesim_pneumatic_components.py

@@ -6,9 +6,13 @@ from PythonModels.components.amesim_pneumatic import (
     HELIUM_PNEUMATIC_GAS,
     AmesimPneumaticOrifice,
     AmesimPneumaticVolume,
+    AmesimVariablePneumaticVolume,
+    cm3_to_m3,
     compressible_orifice_mass_flow,
     diameter_mm_to_area_m2,
+    kg_to_g,
     liters_to_m3,
+    m3_to_cm3,
     mm2_to_m2,
 )
 
@@ -16,6 +20,9 @@ from PythonModels.components.amesim_pneumatic import (
 class AmesimPneumaticComponentsTest(unittest.TestCase):
     def test_unit_conversions(self) -> None:
         self.assertAlmostEqual(liters_to_m3(15.0), 0.015)
+        self.assertAlmostEqual(m3_to_cm3(0.015), 15000.0)
+        self.assertAlmostEqual(cm3_to_m3(15000.0), 0.015)
+        self.assertAlmostEqual(kg_to_g(1.25), 1250.0)
         self.assertAlmostEqual(mm2_to_m2(78.5), 78.5e-6)
         self.assertAlmostEqual(diameter_mm_to_area_m2(10.0), 7.853981633974483e-5)
 
@@ -33,6 +40,33 @@ class AmesimPneumaticComponentsTest(unittest.TestCase):
         self.assertGreater(props.rho, 20.0)
         self.assertLess(props.rho, 30.0)
 
+    def test_volume_reports_amesim_style_observables(self) -> None:
+        volume = AmesimPneumaticVolume.from_liters(
+            name="pn_general_chamber",
+            volume_liters=57.0,
+            p0=15.3e6,
+            T0=293.15,
+        )
+
+        self.assertAlmostEqual(volume.volume_cm3(), 57000.0)
+        self.assertAlmostEqual(
+            volume.pressure_gauge_pa(reference_pressure_pa=101_300.0),
+            15198700.0,
+        )
+        self.assertGreater(volume.gas_mass_g(), 1300.0)
+
+    def test_variable_volume_tracks_external_volume(self) -> None:
+        volume = AmesimVariablePneumaticVolume.from_liters(
+            name="pn_c1_8",
+            dead_volume_liters=15.0,
+            p0=100000.0,
+            T0=293.15,
+        )
+
+        self.assertAlmostEqual(volume.volume_cm3(), 15000.0)
+        volume.set_external_volume_m3(cm3_to_m3(34242.54636512914))
+        self.assertAlmostEqual(volume.volume_cm3(), 49242.54636512914)
+
     def test_orifice_returns_signed_mass_flow(self) -> None:
         orifice = AmesimPneumaticOrifice.from_mm2(
             name="pn_orifice_18",