Implement WebAssembly runtime and kinematics coverage

scripts/test_motion_runtime.py

@@ -0,0 +1,37 @@
+import json
+import subprocess
+import unittest
+from pathlib import Path
+
+import generate_motion_report
+
+
+ROOT = Path(__file__).resolve().parents[1]
+
+
+class MotionRuntimeTests(unittest.TestCase):
+    def test_native_motion_binary(self):
+        binary = ROOT / "build-native/sim_motion_queue_test"
+        if not binary.is_file():
+            self.skipTest("native build has not been generated")
+        result = subprocess.run([str(binary)], cwd=ROOT, check=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        self.assertEqual(result.returncode, 0, result.stderr.decode(errors="replace"))
+
+    def test_wasm_exports_motion_api(self):
+        module = ROOT / "build-wasm/linuxcnc-sim-core.js"
+        if not module.is_file():
+            self.skipTest("WASM build has not been generated")
+        text = module.read_text(encoding="utf-8")
+        for symbol in ("sim_motion_init", "sim_motion_enqueue", "sim_motion_step", "sim_motion_state_hash", "sim_motion_canonical"):
+            self.assertIn(symbol, text)
+
+    def test_report_contract(self):
+        report = json.loads((ROOT / "coverage/motion-runtime.report.json").read_text(encoding="utf-8"))
+        self.assertEqual(report["schema"], "motion-runtime-report.v1")
+        self.assertGreater(report["inputs"]["file_count"], 0)
+        self.assertEqual(report["outputs"]["file_count"], len(generate_motion_report.OUTPUTS))
+        self.assertTrue(report["canonical"]["byte_identical"])
+
+
+if __name__ == "__main__":
+    unittest.main()