From f37c4820419d693c9dec74226fc718c2b309ddd5 Mon Sep 17 00:00:00 2001
From: wangwenjun59 <wangwenjun59@h-partners.com>
Date: Tue, 22 Jul 2025 23:10:32 +0800
Subject: [PATCH]     Description: bigint toString() support undefined    
 Signed-off-by: wangwenjun59 <wangwenjun59@h-partners.com>

---
 ets2panda/test/runtime/ets/BigInt5.ets | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/ets2panda/test/runtime/ets/BigInt5.ets b/ets2panda/test/runtime/ets/BigInt5.ets
index 9f5ea07be2..50c939f603 100644
--- a/ets2panda/test/runtime/ets/BigInt5.ets
+++ b/ets2panda/test/runtime/ets/BigInt5.ets
@@ -89,7 +89,13 @@ function test_unary(): void {
     arktest.assertEQ(b.toString(), "-321")
 }
 
+function test_undefined(): void {
+    let n = 10n
+    arktest.assertEQ(n.toString(undefined), "10")
+}
+
 function main() : void {
     test_unary()
     test_unary_minus()
+    test_undefined()
 }
-- 
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