util: mark special entries as such

This adds the color code to special entries if colors are active.

PR-URL: https://github.com/nodejs/node/pull/22287
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/test/parallel/test-util-inspect.js b/test/parallel/test-util-inspect.js
index 6501187528..433b16c39e 100644
--- a/test/parallel/test-util-inspect.js
+++ b/test/parallel/test-util-inspect.js
@@ -1647,3 +1647,30 @@ assert.strictEqual(inspect(new BigUint64Array([0n])), 'BigUint64Array [ 0n ]');
     '{ [Non\\nenumerable\\tkey]: true }'
   );
 }
+
+// Check for special colors.
+{
+  const special = inspect.colors[inspect.styles.special];
+  const string = inspect.colors[inspect.styles.string];
+
+  assert.strictEqual(
+    inspect(new WeakSet(), { colors: true }),
+    `WeakSet { \u001b[${special[0]}m<items unknown>\u001b[${special[1]}m }`
+  );
+  assert.strictEqual(
+    inspect(new WeakMap(), { colors: true }),
+    `WeakMap { \u001b[${special[0]}m<items unknown>\u001b[${special[1]}m }`
+  );
+  assert.strictEqual(
+    inspect(new Promise(() => {}), { colors: true }),
+    `Promise { \u001b[${special[0]}m<pending>\u001b[${special[1]}m }`
+  );
+
+  const rejection = Promise.reject('Oh no!');
+  assert.strictEqual(
+    inspect(rejection, { colors: true }),
+    `Promise { \u001b[${special[0]}m<rejected>\u001b[${special[1]}m ` +
+    `\u001b[${string[0]}m'Oh no!'\u001b[${string[1]}m }`
+  );
+  rejection.catch(() => {});
+}