279 lines
10 KiB
Python
279 lines
10 KiB
Python
from __future__ import annotations
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import os
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import unittest
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from unittest.mock import patch
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from app.main import compile_reactflow_network
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from app.simulation.solvers.algebraic import (
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CAUSAL_FAST_PATH_ENVIRONMENT_VARIABLE,
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)
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from app.simulation.systems.generic import GenericFluidSystem
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from tests.test_amesim_mechanical_xml import zero_force_mass_project
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from tests.test_amesim_pnvo001_signal_xml import (
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high_pressure_helium_step_project,
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)
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from tests.test_generic_system_xml_simulation import chain_project
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def _system(project) -> GenericFluidSystem:
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return GenericFluidSystem(compile_reactflow_network(project))
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class PressureFlowCausalExecutionTests(unittest.TestCase):
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def test_strict_causal_rhs_matches_environment_disabled_legacy_bitwise(
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self,
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) -> None:
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optimized = _system(high_pressure_helium_step_project())
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with patch.dict(
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os.environ,
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{CAUSAL_FAST_PATH_ENVIRONMENT_VARIABLE: "0"},
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):
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legacy = _system(high_pressure_helium_step_project())
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optimized_state = optimized.initial_state_vector()
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legacy_state = legacy.initial_state_vector()
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for time in (0.0, 0.041, 0.8):
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optimized_derivative = optimized.rhs(time, optimized_state)
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legacy_derivative = legacy.rhs(time, legacy_state)
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self.assertEqual(optimized_derivative, legacy_derivative)
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self.assertEqual(
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tuple(
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unknown.read()
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for unknown in optimized.pressure_flow_solver.unknowns
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),
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tuple(
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unknown.read()
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for unknown in legacy.pressure_flow_solver.unknowns
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),
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)
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global_diagnostics = (
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optimized.pressure_flow_solver.causal_execution_diagnostics()
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)
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self.assertTrue(global_diagnostics["eligible"])
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self.assertGreater(global_diagnostics["fastSolveCount"], 0)
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self.assertGreaterEqual(
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global_diagnostics["fullResidualAuditCount"],
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1,
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)
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secondary = (
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optimized._thermofluid_closure_plan.secondary_block_solvers[0]
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)
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secondary_diagnostics = secondary.causal_execution_diagnostics()
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self.assertTrue(secondary_diagnostics["eligible"])
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self.assertGreater(secondary_diagnostics["fastSolveCount"], 0)
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legacy_diagnostics = (
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legacy.pressure_flow_solver.causal_execution_diagnostics()
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)
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self.assertFalse(legacy_diagnostics["enabled"])
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self.assertEqual(
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legacy_diagnostics["disabledReason"],
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"disabledByEnvironment",
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)
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self.assertEqual(legacy_diagnostics["fastSolveCount"], 0)
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def test_multiple_effort_anchors_conservatively_keep_legacy_path(self) -> None:
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system = _system(chain_project())
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diagnostics = (
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system.pressure_flow_solver.causal_execution_diagnostics()
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)
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self.assertFalse(diagnostics["eligible"])
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self.assertFalse(diagnostics["enabled"])
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self.assertEqual(
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diagnostics["fallbackReason"],
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"effortGroupDoesNotHaveOneAnchor",
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)
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def test_runtime_flow_coverage_failure_fuses_to_verified_legacy_path(
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self,
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) -> None:
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system = _system(zero_force_mass_project())
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state = system.initial_state_vector()
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system.rhs(0.0, state)
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solver = system.pressure_flow_solver
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original = solver._solve_explicit_flow_unknowns
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def hide_coverage(*args, **kwargs):
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original(*args, **kwargs)
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return set()
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with patch.object(
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solver,
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"_solve_explicit_flow_unknowns",
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side_effect=hide_coverage,
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):
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diagnostics = solver.solve(effort_variables=("p",))
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self.assertTrue(diagnostics.success)
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self.assertTrue(diagnostics.residual_verified_this_solve)
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execution = solver.causal_execution_diagnostics()
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self.assertFalse(execution["enabled"])
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self.assertEqual(
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execution["disabledReason"],
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"causalRuntimeGateFailed",
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)
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self.assertEqual(execution["legacyFallbackCount"], 1)
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def test_periodic_audit_failure_disables_fast_path_before_fallback(self) -> None:
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system = _system(zero_force_mass_project())
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state = system.initial_state_vector()
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system.rhs(0.0, state)
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solver = system.pressure_flow_solver
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solver._causal_audit_interval = 0
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original_values = solver._pressure_flow_equation_values
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call_count = 0
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def one_bad_audit_value():
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nonlocal call_count
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call_count += 1
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values = original_values()
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if call_count != 1:
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return values
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return (values[0] + 1.0, *values[1:])
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with patch.object(
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solver,
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"_pressure_flow_equation_values",
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side_effect=one_bad_audit_value,
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):
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diagnostics = solver.solve(effort_variables=("p",))
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self.assertTrue(diagnostics.success)
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execution = solver.causal_execution_diagnostics()
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self.assertFalse(execution["enabled"])
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self.assertEqual(
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execution["disabledReason"],
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"causalResidualAuditFailed",
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)
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self.assertEqual(execution["auditFailureCount"], 1)
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self.assertEqual(execution["legacyFallbackCount"], 1)
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def test_requested_audit_interrupts_periodic_fast_sequence(self) -> None:
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system = _system(zero_force_mass_project())
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state = system.initial_state_vector()
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solver = system.pressure_flow_solver
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system.rhs(0.0, state)
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system.rhs(0.0, state)
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before = solver.causal_execution_diagnostics()
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self.assertEqual(before["fullResidualAuditCount"], 1)
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self.assertEqual(before["fastSolveCount"], 1)
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solver.request_causal_audit()
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system.rhs(0.0, state)
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after = solver.causal_execution_diagnostics()
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self.assertEqual(after["fullResidualAuditCount"], 2)
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self.assertEqual(after["fastSolveCount"], 1)
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def test_fast_solve_skips_the_full_residual_evaluator(self) -> None:
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system = _system(zero_force_mass_project())
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state = system.initial_state_vector()
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solver = system.pressure_flow_solver
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system.rhs(0.0, state)
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with patch.object(
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solver,
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"_pressure_flow_equation_values",
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wraps=solver._pressure_flow_equation_values,
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) as evaluate_all:
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system.rhs(0.0, state)
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evaluate_all.assert_not_called()
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self.assertTrue(solver.last_diagnostics.causal_fast_path_used)
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self.assertFalse(
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solver.last_diagnostics.residual_verified_this_solve
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)
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def test_nonfinite_explicit_assignment_fuses_and_verifies_same_solve(
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self,
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) -> None:
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system = _system(zero_force_mass_project())
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state = system.initial_state_vector()
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system.rhs(0.0, state)
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solver = system.pressure_flow_solver
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original = solver._evaluate_explicit_flow_stage
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call_count = 0
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def one_nonfinite_assignment(stage):
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nonlocal call_count
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call_count += 1
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values = original(stage)
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if call_count != 1:
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return values
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return (float("nan"), *values[1:])
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with patch.object(
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solver,
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"_evaluate_explicit_flow_stage",
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side_effect=one_nonfinite_assignment,
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):
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diagnostics = solver.solve(effort_variables=("p",))
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self.assertTrue(diagnostics.success)
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self.assertTrue(diagnostics.residual_verified_this_solve)
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execution = solver.causal_execution_diagnostics()
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self.assertFalse(execution["enabled"])
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self.assertEqual(
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execution["disabledReason"],
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"causalRuntimeGateFailed",
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)
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self.assertEqual(execution["legacyFallbackCount"], 1)
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def test_nonpositive_pressure_fuses_and_verifies_same_solve(self) -> None:
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system = _system(high_pressure_helium_step_project())
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state = system.initial_state_vector()
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system.rhs(0.0, state)
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solver = system.pressure_flow_solver
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original = solver._solve_explicit_flow_unknowns
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pressure = next(
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unknown for unknown in solver.unknowns if unknown.variable == "p"
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)
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def make_pressure_invalid(*args, **kwargs):
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seeded = original(*args, **kwargs)
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pressure.write(-1.0)
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return seeded
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with patch.object(
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solver,
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"_solve_explicit_flow_unknowns",
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side_effect=make_pressure_invalid,
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):
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diagnostics = solver.solve(effort_variables=("p",))
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self.assertTrue(diagnostics.success)
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self.assertTrue(diagnostics.residual_verified_this_solve)
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self.assertGreater(pressure.read(), 0.0)
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execution = solver.causal_execution_diagnostics()
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self.assertFalse(execution["enabled"])
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self.assertEqual(
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execution["disabledReason"],
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"causalRuntimeGateFailed",
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)
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self.assertEqual(execution["legacyFallbackCount"], 1)
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def test_default_periodic_audit_runs_after_sixty_four_fast_solves(self) -> None:
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system = _system(zero_force_mass_project())
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state = system.initial_state_vector()
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solver = system.pressure_flow_solver
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system.rhs(0.0, state)
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for _iteration in range(64):
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system.rhs(0.0, state)
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before_boundary = solver.causal_execution_diagnostics()
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self.assertEqual(before_boundary["auditInterval"], 64)
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self.assertEqual(before_boundary["fastSolveCount"], 64)
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self.assertEqual(before_boundary["fullResidualAuditCount"], 1)
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system.rhs(0.0, state)
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after_boundary = solver.causal_execution_diagnostics()
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self.assertEqual(after_boundary["fastSolveCount"], 64)
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self.assertEqual(after_boundary["fullResidualAuditCount"], 2)
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if __name__ == "__main__":
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unittest.main()
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