Upload Kmake

test/parallel/test-util-internal.js

@@ -0,0 +1,30 @@
+'use strict';
+// Flags: --expose-internals
+
+require('../common');
+const assert = require('assert');
+const fixtures = require('../common/fixtures');
+const { internalBinding } = require('internal/test/binding');
+
+const {
+  privateSymbols: {
+    arrow_message_private_symbol,
+  },
+} = internalBinding('util');
+
+const obj = {};
+assert.strictEqual(obj[arrow_message_private_symbol], undefined);
+
+obj[arrow_message_private_symbol] = 'bar';
+assert.strictEqual(obj[arrow_message_private_symbol], 'bar');
+assert.deepStrictEqual(Reflect.ownKeys(obj), []);
+
+let arrowMessage;
+
+try {
+  require(fixtures.path('syntax', 'bad_syntax'));
+} catch (err) {
+  arrowMessage = err[arrow_message_private_symbol];
+}
+
+assert.match(arrowMessage, /bad_syntax\.js:1/);