import hashlib import importlib.machinery import importlib.util import io import json import os from pathlib import Path import subprocess import tarfile import tempfile import unittest from contextlib import redirect_stdout from unittest import mock SCRIPT_DIR = Path(__file__).resolve().parent RUNNER_PATH = SCRIPT_DIR / "nodedc-deploy" BUILDER_PATH = ( SCRIPT_DIR / "build-engine-mcp-execution-profile-decoder-artifact.mjs" ) ENGINE_ROOT = SCRIPT_DIR.parent.parent.parent / "NODEDC_ENGINE_INFRA" PATCH_ID = "engine-mcp-execution-profile-decoder-20991231-999" def load_runner(): loader = importlib.machinery.SourceFileLoader( "nodedc_engine_mcp_execution_profile_decoder", str(RUNNER_PATH), ) spec = importlib.util.spec_from_loader(loader.name, loader) module = importlib.util.module_from_spec(spec) loader.exec_module(module) return module RUNNER = load_runner() class EngineMcpExecutionProfileDecoderTest(unittest.TestCase): def require_current_target_source(self): for relative_path, expected in ( RUNNER.ENGINE_MCP_EXECUTION_PROFILE_DECODER_TARGET_SHA256.items() ): path = ENGINE_ROOT / relative_path if ( not path.is_file() or hashlib.sha256(path.read_bytes()).hexdigest() != expected ): self.skipTest( "execution profile decoder source has advanced " "to its exact successor" ) def build(self, artifact_dir): environment = os.environ.copy() environment["NODEDC_ENGINE_SOURCE_ROOT"] = str(ENGINE_ROOT) environment["NODEDC_DEPLOY_ARTIFACT_DIR"] = str(artifact_dir) completed = subprocess.run( ["node", str(BUILDER_PATH), PATCH_ID], check=True, capture_output=True, text=True, env=environment, ) return json.loads(completed.stdout) def test_builder_emits_exact_deterministic_two_file_slice(self): self.require_current_target_source() with tempfile.TemporaryDirectory( prefix="nodedc-engine-mcp-profile-decoder-" ) as directory: root = Path(directory) first = self.build(root / "first") second = self.build(root / "second") first_artifact = Path(first["artifact"]) second_artifact = Path(second["artifact"]) self.assertEqual(first_artifact.read_bytes(), second_artifact.read_bytes()) self.assertEqual( first["sha256"], hashlib.sha256(first_artifact.read_bytes()).hexdigest(), ) self.assertEqual(first["services"], ["nodedc-backend"]) self.assertEqual(first["valuesIncluded"], False) self.assertEqual(first["rawExecutionDataIncluded"], False) self.assertEqual( tuple(first["entries"]), RUNNER.ENGINE_MCP_EXECUTION_PROFILE_DECODER_ARTIFACT_ENTRIES, ) extract = root / "extract" with tarfile.open(first_artifact, "r:gz") as archive: archive.extractall(extract, filter="data") entries = tuple( (extract / "files.txt").read_text(encoding="utf-8").splitlines() ) payload = extract / "payload" self.assertTrue( RUNNER.is_engine_mcp_execution_profile_decoder_slice( "engine", entries, ) ) self.assertFalse( RUNNER.is_engine_provider_target_host_policy_slice( "engine", entries, ) ) self.assertEqual( RUNNER.component_services("engine", entries), ("nodedc-backend",), ) self.assertEqual( RUNNER.component_healthchecks( "engine", entries, ("nodedc-backend",), ), ("http://127.0.0.1:3001/health",), ) RUNNER.validate_engine_mcp_execution_profile_decoder_slice( payload, entries, ) with tempfile.TemporaryDirectory( prefix="nodedc-engine-mcp-profile-plan-" ) as plan_directory: loaded = RUNNER.load_artifact( first_artifact, Path(plan_directory), ) self.assertEqual(loaded[0]["component"], "engine") self.assertEqual(tuple(loaded[1]), entries) def test_preflight_requires_exact_predecessor_and_absent_descriptor(self): with tempfile.TemporaryDirectory( prefix="nodedc-engine-mcp-profile-preflight-" ) as directory: root = Path(directory) relative_path = next( iter( RUNNER.ENGINE_MCP_EXECUTION_PROFILE_DECODER_PREDECESSOR_SHA256 ) ) path = root / relative_path path.parent.mkdir(parents=True, exist_ok=True) path.write_text("predecessor\n", encoding="utf-8") expected = ( RUNNER.ENGINE_MCP_EXECUTION_PROFILE_DECODER_PREDECESSOR_SHA256[ relative_path ] ) with ( mock.patch.object(RUNNER, "component_root", return_value=root), mock.patch.object(RUNNER, "sha256_file", return_value=expected), mock.patch.object( RUNNER, "preflight_engine_credential_backend_runtime", return_value={"mode": "verified-derived-retry"}, ), ): result = ( RUNNER.preflight_engine_mcp_execution_profile_decoder_predecessor() ) self.assertEqual( result["mode"], "exact-flatted-numeric-string-preservation", ) descriptor = ( root / RUNNER.ENGINE_MCP_EXECUTION_PROFILE_DECODER_DESCRIPTOR_REL ) descriptor.parent.mkdir(parents=True, exist_ok=True) descriptor.write_text("{}\n", encoding="utf-8") with ( mock.patch.object(RUNNER, "component_root", return_value=root), mock.patch.object(RUNNER, "sha256_file", return_value=expected), ): with self.assertRaises(RUNNER.DeployError): RUNNER.preflight_engine_mcp_execution_profile_decoder_predecessor() def test_plan_renders_exact_external_mcp_boundary(self): self.require_current_target_source() with tempfile.TemporaryDirectory( prefix="nodedc-engine-mcp-profile-plan-" ) as directory: root = Path(directory) built = self.build(root / "artifacts") artifact = Path(built["artifact"]) live_root = root / "live" live_root.mkdir() preflight = { "mode": "exact-flatted-numeric-string-preservation", "predecessor_sha256": dict( RUNNER.ENGINE_MCP_EXECUTION_PROFILE_DECODER_PREDECESSOR_SHA256 ), "target_sha256": dict( RUNNER.ENGINE_MCP_EXECUTION_PROFILE_DECODER_TARGET_SHA256 ), "new_paths": tuple( RUNNER.ENGINE_MCP_EXECUTION_PROFILE_DECODER_NEW_PATHS ), "backend_mode": "verified-derived-retry", } output = io.StringIO() with ( mock.patch.object(RUNNER, "validate_artifact_location"), mock.patch.object(RUNNER, "ensure_layout"), mock.patch.object(RUNNER, "TMP_DIR", root), mock.patch.object(RUNNER, "component_root", return_value=live_root), mock.patch.object( RUNNER, "component_compose_root", return_value=live_root, ), mock.patch.object( RUNNER, "preflight_engine_mcp_execution_profile_decoder_predecessor", return_value=preflight, ), mock.patch.object( RUNNER, "preflight_engine_credential_backend_runtime", return_value={"mode": "verified-derived-retry"}, ), mock.patch.object(RUNNER, "state_has_sha", return_value=False), mock.patch.object(RUNNER, "state_has_patch_id", return_value=False), redirect_stdout(output), ): RUNNER.plan_artifact(artifact) plan = output.getvalue() self.assertIn("services=nodedc-backend", plan) self.assertIn( "engine_mcp_observability_transition=" "exact-flatted-numeric-string-preservation", plan, ) self.assertIn("engine_mcp_surface=external-codex", plan) self.assertIn("engine_mcp_profile_values_included=no", plan) self.assertIn("mcp_nginx=untouched", plan) self.assertIn("embedded_ai_workspace=untouched", plan) self.assertIn( "engine_mcp_profile_decoder_predecessor_state" f"[{RUNNER.ENGINE_MCP_EXECUTION_PROFILE_DECODER_DESCRIPTOR_REL}]=" "absent", plan, ) self.assertIn("state=new", plan) def test_healthchecks_dispatch_safe_profile_acceptance(self): entries = RUNNER.ENGINE_MCP_EXECUTION_PROFILE_DECODER_ARTIFACT_ENTRIES with tempfile.TemporaryDirectory( prefix="nodedc-engine-mcp-profile-health-" ) as directory: root = Path(directory) for relative_path in entries: path = root / relative_path path.parent.mkdir(parents=True, exist_ok=True) path.write_text("target\n", encoding="utf-8") def target_hash(path): relative_path = Path(path).relative_to(root).as_posix() return ( RUNNER.ENGINE_MCP_EXECUTION_PROFILE_DECODER_TARGET_SHA256[ relative_path ] ) with ( mock.patch.object(RUNNER, "component_root", return_value=root), mock.patch.object(RUNNER, "sha256_file", side_effect=target_hash), mock.patch.object(RUNNER, "healthcheck_compose_service"), mock.patch.object(RUNNER, "component_healthchecks", return_value=()), mock.patch.object( RUNNER, "preflight_engine_credential_backend_runtime", return_value={"mode": "verified-derived-retry"}, ), mock.patch.object( RUNNER, "accept_engine_mcp_execution_profile_decoder_runtime", return_value={"live": "accepted"}, ) as acceptance, mock.patch.object(RUNNER, "healthcheck_container"), ): RUNNER.run_healthchecks( "engine", entries, ("nodedc-backend",), ) acceptance.assert_called_once_with() def test_live_acceptance_uses_safe_profile_contract(self): self.require_current_target_source() expected_live = ( "engine-mcp-execution-profile-decoder:" "flatted-numeric-strings:safe-profile:v1" ) with ( mock.patch.object(RUNNER, "component_root", return_value=ENGINE_ROOT), mock.patch.object( RUNNER, "engine_backend_container_id", return_value="backend", ), mock.patch.object( RUNNER, "run_engine_backend_probe", return_value=expected_live, ) as backend_probe, ): result = RUNNER.accept_engine_mcp_execution_profile_decoder_runtime() self.assertEqual(result["live"], expected_live) self.assertEqual( backend_probe.call_args.args[1], "Engine MCP execution profile decoder", ) probe_source = backend_probe.call_args.args[0][-1] self.assertIn("module.toSafeNodeOutputProfile", probe_source) self.assertIn("profile.valuesIncluded!==false", probe_source) self.assertIn(".json.fact", probe_source) if __name__ == "__main__": unittest.main(verbosity=2)