完善AMESim组件界面与仿真求解稳定性
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from __future__ import annotations
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import math
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import unittest
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from app.main import (
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ReactFlowProjectPayload,
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build_reactflow_system_xml,
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compile_reactflow_network,
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run_system_xml_simulation,
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)
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from app.system_xml import validate_system_xml_document
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from tests.test_generic_system_xml_simulation import component_node, physical_edge
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from tests.test_system_xml_protocol import physical_port
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def _signal_port(name: str, role: str, side: str) -> dict[str, str | None]:
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return {
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"name": name,
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"kind": "signal",
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"domain": "signal",
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"nominalRole": role,
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"positiveFlowDirection": None,
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"side": side,
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}
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def _signal_edge(
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edge_id: str,
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source: str,
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source_port: str,
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target: str,
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target_port: str,
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) -> dict[str, str]:
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return {
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"id": edge_id,
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"source": source,
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"sourceHandle": source_port,
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"target": target,
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"targetHandle": target_port,
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}
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def _plug(component_id: str) -> dict[str, object]:
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return component_node(
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component_id,
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"amesim_pnpl01",
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[physical_port("port_1", "bidirectional", "left")],
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{},
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)
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def helium_step_equalization_project() -> ReactFlowProjectPayload:
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"""Programmatic form of the user XML that failed at the 3.04 s sample."""
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return ReactFlowProjectPayload(
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name="amesim-helium-step-equalization-regression",
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nodes=[
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component_node(
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"amesim_helium_medium_1",
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"amesim_helium_medium",
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[],
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{"gi": 1.0, "property_model": 0.0},
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),
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component_node(
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"amesim_pnch023_1",
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"amesim_pnch023",
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[
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physical_port("port_1", "bidirectional", "left"),
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physical_port("port_2", "bidirectional", "right"),
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],
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{
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"gi": 1.0,
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"cvol": 0.057,
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"kth": 0.0,
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"sth": 0.1,
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"extemp": 293.15,
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"p0": 15_300_000.0,
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"T0": 293.15,
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},
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),
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component_node(
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"amesim_pnch012_1",
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"amesim_pnch012",
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[
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physical_port("port_1", "bidirectional", "left"),
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physical_port("port_2", "bidirectional", "right"),
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physical_port("port_3", "bidirectional", "left"),
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physical_port("port_4", "bidirectional", "right"),
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],
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{
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"gi": 1.0,
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"cvol0": 0.015,
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"kth": 1500.0,
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"sth": 0.7,
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"extemp": 293.15,
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"p0": 100_000.0,
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"T0": 293.15,
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"vol1": 0.0,
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"vol2": 0.0,
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"vol3": 0.0,
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"vol4": 0.0,
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"dvol1": 0.0,
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"dvol2": 0.0,
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"dvol3": 0.0,
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"dvol4": 0.0,
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},
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),
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component_node(
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"amesim_pnvo001_1",
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"amesim_pnvo001",
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[
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_signal_port("res", "input", "left"),
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physical_port("port_2", "bidirectional", "left"),
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physical_port("port_3", "bidirectional", "right"),
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],
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{
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"gi": 1.0,
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"cq": 0.45,
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"area0": 7.85e-5,
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"Cv": 0.5,
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"Kv": 0.4,
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"flowset": 1.0,
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"opening0": 1.0,
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},
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),
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component_node(
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"amesim_step0_1",
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"amesim_step0",
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[_signal_port("out", "output", "right")],
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{"initial": 0.0, "final": 1.0, "time": 0.04},
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),
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_plug("amesim_pnpl01_1"),
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_plug("amesim_pnpl01_2"),
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_plug("amesim_pnpl01_3"),
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_plug("amesim_pnpl01_4"),
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],
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edges=[
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physical_edge(
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"edge-high-plug",
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"amesim_pnpl01_1",
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"port_1",
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"amesim_pnch023_1",
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"port_1",
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),
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physical_edge(
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"edge-high-valve",
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"amesim_pnch023_1",
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"port_2",
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"amesim_pnvo001_1",
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"port_2",
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),
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physical_edge(
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"edge-valve-low",
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"amesim_pnvo001_1",
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"port_3",
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"amesim_pnch012_1",
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"port_3",
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),
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physical_edge(
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"edge-low-port-4",
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"amesim_pnch012_1",
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"port_4",
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"amesim_pnpl01_4",
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"port_1",
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),
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physical_edge(
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"edge-low-port-2",
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"amesim_pnch012_1",
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"port_2",
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"amesim_pnpl01_3",
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"port_1",
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),
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physical_edge(
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"edge-low-port-1",
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"amesim_pnpl01_2",
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"port_1",
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"amesim_pnch012_1",
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"port_1",
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),
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_signal_edge(
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"edge-step-valve",
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"amesim_step0_1",
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"out",
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"amesim_pnvo001_1",
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"res",
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),
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],
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simulation={
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"t_start": 0.0,
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"t_stop": 10.0,
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"step": 0.02,
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"max_step": 0.002,
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"method": "BDF",
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},
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)
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class AmesimHeliumStepLongRunTests(unittest.TestCase):
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def test_helium_step_equalization_completes_beyond_3_04_seconds(self) -> None:
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project = helium_step_equalization_project()
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network = compile_reactflow_network(project)
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self.assertEqual(
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network.components["amesim_pnch023_1"].medium.name,
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"AMESimHeliumPengRobinson",
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)
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self.assertEqual(
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network.components["amesim_pnch012_1"].medium.name,
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"AMESimHeliumPengRobinson",
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)
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xml = build_reactflow_system_xml(project)
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report = validate_system_xml_document(xml)
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self.assertTrue(report.valid, report.as_dict())
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result = run_system_xml_simulation(xml)
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self.assertTrue(result["success"], result["message"])
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self.assertEqual(result["status"], "completed")
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self.assertAlmostEqual(result["simulatedUntil"], 10.0)
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self.assertEqual(result["diagnostics"]["signal"]["eventTimes"], [0.04])
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self.assertLessEqual(
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result["diagnostics"]["pressureFlow"]["maxEvaluationsPerSolve"],
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5,
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)
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self.assertLessEqual(
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result["diagnostics"]["pressureFlow"]["maxScaledResidual"],
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1.0e-7,
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)
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series = result["series"]
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self.assertIn(3.04, series["time"])
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self.assertTrue(
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all(
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math.isfinite(value)
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for values in series.values()
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for value in values
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)
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)
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high_pressure = series["amesim_pnch023_1.p"]
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low_pressure = series["amesim_pnch012_1.p"]
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initial_pressure_gap = abs(high_pressure[0] - low_pressure[0])
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final_pressure_gap = abs(high_pressure[-1] - low_pressure[-1])
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self.assertLess(high_pressure[-1], high_pressure[0])
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self.assertGreater(low_pressure[-1], low_pressure[0])
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self.assertLess(final_pressure_gap, initial_pressure_gap)
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self.assertLess(final_pressure_gap, 10.0)
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self.assertLess(
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abs(series["amesim_pnvo001_1.port_2.m_flow"][-1]),
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1.0e-4,
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)
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if __name__ == "__main__":
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unittest.main()
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