test: add schema validation and process.versions.ata tests

Author: mertcanaltin

test/fixtures/rc/invalid-schema-type.json

@@ -0,0 +1,5 @@
+{
+  "nodeOptions": {
+    "max-old-space-size": "not-a-number"
+  }
+}

test/parallel/test-ata-version.js

@@ -0,0 +1,9 @@
+'use strict';
+
+require('../common');
+const assert = require('assert');
+
+// Verify that ata-validator is available in process.versions
+assert.ok(process.versions.ata, 'process.versions.ata should be defined');
+assert.match(process.versions.ata, /^\d+\.\d+\.\d+$/,
+             'process.versions.ata should be a semver string');

test/parallel/test-config-file.js

@@ -605,3 +605,21 @@ describe('namespace-scoped options', () => {
     assert.strictEqual(result.code, 0);
   });
 });
+
+test('should reject config with schema validation errors', async () => {
+  const result = await spawnPromisified(process.execPath, [
+    '--experimental-config-file',
+    fixtures.path('rc/invalid-schema-type.json'),
+    '-p', '"Hello"',
+  ]);
+  assert.match(result.stderr, /Invalid configuration/);
+  assert.strictEqual(result.code, 9);
+});
+
+test('process.versions.ata should be defined', async () => {
+  const result = await spawnPromisified(process.execPath, [
+    '-p', 'process.versions.ata',
+  ]);
+  assert.match(result.stdout, /\d+\.\d+\.\d+/);
+  assert.strictEqual(result.code, 0);
+});

test/parallel/test-process-versions.js

@@ -25,6 +25,7 @@ const expected_keys = [
   'ada',
   'nbytes',
   'merve',
+  'ata',
 ];