test: add test case for util.inspect

PR-URL: #55778
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Moshe Atlow <moshe@atlow.co.il>
Reviewed-By: Chemi Atlow <chemi@atlow.co.il>
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>

Author: ljharb

test/parallel/test-util-inspect.js

@@ -3258,6 +3258,13 @@ assert.strictEqual(
     util.inspect({ ['__proto__']: { a: 1 } }),
     "{ ['__proto__']: { a: 1 } }"
   );
+
+  const o = { ['__proto__']: { a: 1 } };
+  Object.defineProperty(o, '__proto__', { enumerable: false });
+  assert.strictEqual(
+    util.inspect(o, { showHidden: true }),
+    "{ ['__proto__']: { a: 1 } }"
+  );
 }
 
 {
@@ -3323,3 +3330,26 @@ assert.strictEqual(
     }
   }), '{ [Symbol(Symbol.iterator)]: [Getter] }');
 }
+
+{
+  const sym = Symbol('bar');
+  const o = {
+    'foo': 0,
+    'Symbol(foo)': 0,
+    [Symbol('foo')]: 0,
+    [Symbol('foo()')]: 0,
+    [sym]: 0,
+  };
+  Object.defineProperty(o, sym, { enumerable: false });
+
+  assert.strictEqual(
+    util.inspect(o, { showHidden: true }),
+    '{\n' +
+    '  foo: 0,\n' +
+    "  'Symbol(foo)': 0,\n" +
+    '  [Symbol(foo)]: 0,\n' +
+    '  [Symbol(foo())]: 0,\n' +
+    '  [Symbol(bar)]: 0\n' +
+    '}',
+  );
+}