From 9c1dd9d8ca9efeb3985aa557f6b3ce6321e56886 Mon Sep 17 00:00:00 2001
From: Rich Trott <rtrott@gmail.com>
Date: Mon, 17 Jan 2022 16:28:00 +0000
Subject: [PATCH] test: improve util-format code coverage

Add test case for calling `util.format()` with a BigInt and a separator.

Refs: https://coverage.nodejs.org/coverage-986cf3b986c6c3e1/lib/internal/util/inspect.js.html#L2042
---
 test/parallel/test-util-format.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/test/parallel/test-util-format.js b/test/parallel/test-util-format.js
index 36c98bcb9790b5..ab0d50f743fd98 100644
--- a/test/parallel/test-util-format.js
+++ b/test/parallel/test-util-format.js
@@ -143,6 +143,13 @@ assert.strictEqual(
   '1180591620717411303424n 12345678901234567890123n'
 );
 
+assert.strictEqual(
+  util.formatWithOptions(
+    { numericSeparator: true },
+    '%i %d', 1180591620717411303424n, 12345678901234567890123n),
+  '1_180_591_620_717_411_303_424n 12_345_678_901_234_567_890_123n'
+);
+
 // Float format specifier
 assert.strictEqual(util.format('%f'), '%f');
 assert.strictEqual(util.format('%f', 42.0), '42');