PythonModels/systems/test_mql_computed.py

@@ -3,6 +3,7 @@ from __future__ import annotations
 from dataclasses import dataclass
 from pathlib import Path
 
+from PythonModels.components.amesim_pneumatic import m3_to_cm3
 from PythonModels.reporting.amesim_results import AmesimResults, load_test_mql_amesim_results
 from PythonModels.reporting.test_mql_comparison import TestMqlComparisonResult
 from PythonModels.reporting.test_mql_observations import (
@@ -19,7 +20,6 @@ from PythonModels.reporting.test_mql_output_validation import (
     validate_test_mql_output,
 )
 from PythonModels.reporting.test_mql_variables import build_test_mql_variable_catalog
-from PythonModels.components.amesim_pneumatic import m3_to_cm3
 from PythonModels.systems.test_mql_mechanical import (
     TestMqlMechanicalAssembly,
     build_test_mql_mechanical_assembly,
@@ -67,6 +67,24 @@ class TestMqlComputedGeometryRun:
         return len(self.output.data_paths)
 
 
+@dataclass(frozen=True)
+class TestMqlComputedMechanicalRelationsRun:
+    amesim_results: AmesimResults
+    observation_catalog: TestMqlObservationCatalog
+    output_schema: TestMqlOutputSchema
+    mechanical_assembly: TestMqlMechanicalAssembly
+    output: TestMqlValidatedOutput
+    comparison: TestMqlComparisonResult
+
+    @property
+    def sample_count(self) -> int:
+        return len(self.output.times)
+
+    @property
+    def signal_count(self) -> int:
+        return len(self.output.data_paths)
+
+
 def run_test_mql_computed_piston_geometry(
     archive_path: Path,
 ) -> TestMqlComputedPistonGeometryRun:
@@ -154,6 +172,45 @@ def run_test_mql_computed_geometry(
     )
 
 
+def run_test_mql_computed_mechanical_relations(
+    archive_path: Path,
+) -> TestMqlComputedMechanicalRelationsRun:
+    amesim_results = load_test_mql_amesim_results(archive_path)
+    observation_catalog = build_test_mql_observation_catalog(amesim_results)
+    output_schema = build_test_mql_output_schema(
+        amesim_results,
+        observation_catalog=observation_catalog,
+    )
+    variable_catalog = build_test_mql_variable_catalog(amesim_results)
+    mechanical_assembly = build_test_mql_mechanical_assembly(
+        amesim_results=amesim_results,
+        variable_catalog=variable_catalog,
+    )
+    output_series = _compute_mass_duplicate_series(amesim_results, mechanical_assembly)
+    output_data_paths = tuple(output_series)
+    output = validate_test_mql_output(
+        times=amesim_results.times,
+        series_by_data_path=output_series,
+        schema=output_schema,
+        data_paths=output_data_paths,
+    )
+    comparison = compare_validated_test_mql_output(
+        times=output.times,
+        series_by_data_path=output.series_by_data_path,
+        schema=output_schema,
+        amesim_results=amesim_results,
+        data_paths=output.data_paths,
+    )
+    return TestMqlComputedMechanicalRelationsRun(
+        amesim_results=amesim_results,
+        observation_catalog=observation_catalog,
+        output_schema=output_schema,
+        mechanical_assembly=mechanical_assembly,
+        output=output,
+        comparison=comparison,
+    )
+
+
 def _compute_piston_geometry_series(
     amesim_results: AmesimResults,
     mechanical_assembly: TestMqlMechanicalAssembly,
@@ -206,3 +263,19 @@ def _piston_alias_for_variable_chamber(chamber_alias: str) -> str:
     if not chamber_alias.startswith("pn_c1"):
         raise ValueError(f"Unexpected PNCH012 alias: {chamber_alias}")
     return chamber_alias.replace("pn_c1", "pn_brp2", 1)
+
+
+def _compute_mass_duplicate_series(
+    amesim_results: AmesimResults,
+    mechanical_assembly: TestMqlMechanicalAssembly,
+) -> dict[str, tuple[float, ...]]:
+    series_by_data_path: dict[str, tuple[float, ...]] = {}
+    for alias in sorted(mechanical_assembly.masses):
+        for signal_name in ("x1", "v1", "acc1"):
+            source_path = f"{signal_name}@{alias}"
+            duplicate_path = f"{signal_name}dup@{alias}"
+            series_by_data_path[duplicate_path] = tuple(
+                -value for value in amesim_results.series(source_path)
+            )
+    return series_by_data_path
+

tests/test_test_mql_computed.py

@@ -5,6 +5,7 @@ from pathlib import Path
 
 from PythonModels.systems.test_mql_computed import (
     run_test_mql_computed_geometry,
+    run_test_mql_computed_mechanical_relations,
     run_test_mql_computed_piston_geometry,
 )
 
@@ -109,5 +110,48 @@ class TestMqlComputedGeometryTests(unittest.TestCase):
         )
 
 
+class TestMqlComputedMechanicalRelationsTests(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls) -> None:
+        cls.computed_run = run_test_mql_computed_mechanical_relations(TEST_MQL_AME)
+
+    def test_computed_mechanical_relations_outputs_schema_valid_series(self) -> None:
+        self.assertEqual(self.computed_run.sample_count, 1002)
+        self.assertEqual(len(self.computed_run.mechanical_assembly.masses), 10)
+        self.assertEqual(self.computed_run.signal_count, 30)
+        self.assertEqual(len(self.computed_run.comparison.metrics), 30)
+        self.assertEqual(self.computed_run.output_schema.signal_count, 858)
+
+    def test_computed_mechanical_relations_include_mass_duplicate_paths(self) -> None:
+        paths = self.computed_run.output.data_paths
+
+        self.assertIn("x1dup@mass_friction_endstops_10", paths)
+        self.assertIn("v1dup@mass_friction_endstops_10", paths)
+        self.assertIn("acc1dup@mass_friction_endstops_10", paths)
+        self.assertEqual(len([path for path in paths if path.startswith("x1dup@")]), 10)
+        self.assertEqual(len([path for path in paths if path.startswith("v1dup@")]), 10)
+        self.assertEqual(len([path for path in paths if path.startswith("acc1dup@")]), 10)
+
+    def test_computed_mechanical_relations_match_amesim_exactly(self) -> None:
+        for data_path in self.computed_run.output.data_paths:
+            metric = self.computed_run.comparison.metric(data_path)
+            with self.subTest(data_path=data_path):
+                self.assertEqual(metric.max_abs_error, 0.0)
+
+    def test_computed_mechanical_relations_final_samples_match_expected_values(self) -> None:
+        self.assertAlmostEqual(
+            self.computed_run.output.series("x1dup@mass_friction_endstops_10")[-1],
+            -0.3700013536465843,
+        )
+        self.assertAlmostEqual(
+            self.computed_run.output.series("v1dup@mass_friction_endstops_10")[-1],
+            -4.435303434246023e-10,
+        )
+        self.assertAlmostEqual(
+            self.computed_run.output.series("acc1dup@mass_friction_endstops_10")[-1],
+            3.5662378650158644e-07,
+        )
+
+
 if __name__ == "__main__":
     unittest.main()