1 files changed, 10 insertions, 0 deletions
diff --git a/test/js/node/util/util.test.js b/test/js/node/util/util.test.js
index 741b27d19..df995955a 100644
--- a/test/js/node/util/util.test.js
+++ b/test/js/node/util/util.test.js
@@ -315,4 +315,14 @@ describe("util", () => {
       expect(util.TextDecoder === globalThis.TextDecoder).toBe(true);
     });
   });
+
+  it("format", () => {
+    expect(util.format("%s:%s", "foo")).toBe("foo:%s");
+  });
+  it("formatWithOptions", () => {
+    expect(util.formatWithOptions({ colors: true }, "%s:%s", "foo")).toBe("foo:%s");
+    expect(util.formatWithOptions({ colors: true }, "wow(%o)", { obj: true })).toBe(
+      "wow({ obj: \u001B[33mtrue\u001B[39m })",
+    );
+  });
 });