feat: port test_exception to CTS

PORTING.md

@@ -55,7 +55,7 @@ Tests covering the engine-specific part of Node-API, defined in `js_native_api.h
 | `test_dataview`              | Not ported | Medium     |
 | `test_date`                  | Ported ✅  | Easy       |
 | `test_error`                 | Ported ✅  | Medium     |
-| `test_exception`             | Not ported | Medium     |
+| `test_exception`             | Ported ✅  | Medium     |
 | `test_finalizer`             | Not ported | Medium     |
 | `test_function`              | Not ported | Medium     |
 | `test_general`               | Not ported | Hard       |

eslint.config.js

@@ -1,16 +1,14 @@
 import { defineConfig, globalIgnores } from "eslint/config";
 import globals from "globals";
-import eslint from '@eslint/js';
-import tseslint from 'typescript-eslint';
+import eslint from "@eslint/js";
+import tseslint from "typescript-eslint";
 
 export default defineConfig([
   globalIgnores(["**/CMakeFiles/**"]),
   eslint.configs.recommended,
   tseslint.configs.recommended,
   {
-    files: [
-      "tests/**/*.js",
-    ],
+    files: ["tests/**/*.{mjs,js}"],
     languageOptions: {
       // Only allow ECMAScript built-ins and CTS harness globals.
       // This causes no-undef to flag any runtime-specific API (setTimeout, process, Buffer, etc.).
@@ -22,27 +20,37 @@ export default defineConfig([
         mustCall: "readonly",
         mustNotCall: "readonly",
         gcUntil: "readonly",
+        spawnTest: "readonly",
         experimentalFeatures: "readonly",
         napiVersion: "readonly",
         skipTest: "readonly",
       },
     },
     rules: {
       "no-undef": "error",
-      "no-restricted-imports": ["error", {
-        patterns: ["*"],
-      }],
-      "no-restricted-syntax": ["error",
-        { selector: "MemberExpression[object.name='globalThis']", message: "Avoid globalThis access in test files — use CTS harness globals instead" },
-        { selector: "MemberExpression[object.name='global']", message: "Avoid global access in test files — use CTS harness globals instead" }
+      "no-restricted-imports": [
+        "error",
+        {
+          patterns: ["*"],
+        },
+      ],
+      "no-restricted-syntax": [
+        "error",
+        {
+          selector: "MemberExpression[object.name='globalThis']",
+          message:
+            "Avoid globalThis access in test files — use CTS harness globals instead",
+        },
+        {
+          selector: "MemberExpression[object.name='global']",
+          message:
+            "Avoid global access in test files — use CTS harness globals instead",
+        },
       ],
     },
   },
   {
-    files: [
-      "implementors/**/*.{js,ts}",
-      "scripts/**/*.{js,mjs}",
-    ],
+    files: ["implementors/**/*.{js,ts}", "scripts/**/*.{js,mjs}"],
     languageOptions: {
       globals: {
         ...globals.es2025,

implementors/node/assert.js

@@ -1,24 +1,22 @@
-
 import {
   ok,
   strictEqual,
   notStrictEqual,
   deepStrictEqual,
   throws,
+  match,
 } from "node:assert/strict";
 
-const assert = Object.assign(
-  (value, message) => ok(value, message),
-  {
-    ok: (value, message) => ok(value, message),
-    strictEqual: (actual, expected, message) =>
-      strictEqual(actual, expected, message),
-    notStrictEqual: (actual, expected, message) =>
-      notStrictEqual(actual, expected, message),
-    deepStrictEqual: (actual, expected, message) =>
-      deepStrictEqual(actual, expected, message),
-    throws: (fn, error, message) => throws(fn, error, message),
-  },
-);
+const assert = Object.assign((value, message) => ok(value, message), {
+  ok: (value, message) => ok(value, message),
+  strictEqual: (actual, expected, message) =>
+    strictEqual(actual, expected, message),
+  notStrictEqual: (actual, expected, message) =>
+    notStrictEqual(actual, expected, message),
+  deepStrictEqual: (actual, expected, message) =>
+    deepStrictEqual(actual, expected, message),
+  throws: (fn, error, message) => throws(fn, error, message),
+  match: (string, regex, message) => match(string, regex, message),
+});
 
 Object.assign(globalThis, { assert });

implementors/node/child_process.js

@@ -0,0 +1,66 @@
+import { spawnSync } from "node:child_process";
+import path from "node:path";
+
+const ROOT_PATH = path.resolve(import.meta.dirname, "..", "..");
+const FEATURES_MODULE_PATH = path.join(
+  ROOT_PATH,
+  "implementors",
+  "node",
+  "features.js",
+);
+const ASSERT_MODULE_PATH = path.join(
+  ROOT_PATH,
+  "implementors",
+  "node",
+  "assert.js",
+);
+const LOAD_ADDON_MODULE_PATH = path.join(
+  ROOT_PATH,
+  "implementors",
+  "node",
+  "load-addon.js",
+);
+const GC_MODULE_PATH = path.join(ROOT_PATH, "implementors", "node", "gc.js");
+const MUST_CALL_MODULE_PATH = path.join(
+  ROOT_PATH,
+  "implementors",
+  "node",
+  "must-call.js",
+);
+const CHILD_PROCESS_MODULE_PATH = path.join(
+  ROOT_PATH,
+  "implementors",
+  "node",
+  "child_process.js",
+);
+
+const spawnTest = (filePath, options = {}) => {
+  const result = spawnSync(
+    process.execPath,
+    [
+      "--expose-gc",
+      "--import",
+      "file://" + FEATURES_MODULE_PATH,
+      "--import",
+      "file://" + ASSERT_MODULE_PATH,
+      "--import",
+      "file://" + LOAD_ADDON_MODULE_PATH,
+      "--import",
+      "file://" + GC_MODULE_PATH,
+      "--import",
+      "file://" + MUST_CALL_MODULE_PATH,
+      "--import",
+      "file://" + CHILD_PROCESS_MODULE_PATH,
+      filePath,
+    ],
+    { cwd: options.cwd || process.cwd() },
+  );
+  return {
+    status: result.status,
+    signal: result.signal,
+    stderr: result.stderr?.toString() ?? "",
+    stdout: result.stdout?.toString() ?? "",
+  };
+};
+
+Object.assign(globalThis, { spawnTest });

implementors/node/tests.ts

@@ -5,7 +5,7 @@ import path from "node:path";
 
 assert(
   typeof import.meta.dirname === "string",
-  "Expecting a recent Node.js runtime API version"
+  "Expecting a recent Node.js runtime API version",
 );
 
 const ROOT_PATH = path.resolve(import.meta.dirname, "..", "..");
@@ -14,31 +14,32 @@ const FEATURES_MODULE_PATH = path.join(
   ROOT_PATH,
   "implementors",
   "node",
-  "features.js"
+  "features.js",
 );
 const ASSERT_MODULE_PATH = path.join(
   ROOT_PATH,
   "implementors",
   "node",
-  "assert.js"
+  "assert.js",
 );
 const LOAD_ADDON_MODULE_PATH = path.join(
   ROOT_PATH,
   "implementors",
   "node",
-  "load-addon.js"
+  "load-addon.js",
 );
-const GC_MODULE_PATH = path.join(
+const GC_MODULE_PATH = path.join(ROOT_PATH, "implementors", "node", "gc.js");
+const MUST_CALL_MODULE_PATH = path.join(
   ROOT_PATH,
   "implementors",
   "node",
-  "gc.js"
+  "must-call.js",
 );
-const MUST_CALL_MODULE_PATH = path.join(
+const CHILD_PROCESS_MODULE_PATH = path.join(
   ROOT_PATH,
   "implementors",
   "node",
-  "must-call.js"
+  "child_process.js",
 );
 
 export function listDirectoryEntries(dir: string) {
@@ -62,7 +63,7 @@ export function listDirectoryEntries(dir: string) {
 
 export function runFileInSubprocess(
   cwd: string,
-  filePath: string
+  filePath: string,
 ): Promise<void> {
   return new Promise((resolve, reject) => {
     const child = spawn(
@@ -80,9 +81,11 @@ export function runFileInSubprocess(
         "file://" + GC_MODULE_PATH,
         "--import",
         "file://" + MUST_CALL_MODULE_PATH,
+        "--import",
+        "file://" + CHILD_PROCESS_MODULE_PATH,
         filePath,
       ],
-      { cwd }
+      { cwd },
     );
 
     let stderrOutput = "";
@@ -111,9 +114,9 @@ export function runFileInSubprocess(
         new Error(
           `Test file ${path.relative(
             TESTS_ROOT_PATH,
-            filePath
-          )} failed (${reason})${stderrSuffix}`
-        )
+            filePath,
+          )} failed (${reason})${stderrSuffix}`,
+        ),
       );
     });
   });

tests/js-native-api/test_exception/CMakeLists.txt

@@ -0,0 +1 @@
+add_node_api_cts_addon(test_exception test_exception.c)