1 files changed, 18 insertions, 0 deletions
diff --git a/js/src/tests/test262/annexB/built-ins/unescape/argument_bigint.js b/js/src/tests/test262/annexB/built-ins/unescape/argument_bigint.js
new file mode 100644
index 0000000000..00f17cb5e7
--- /dev/null
+++ b/js/src/tests/test262/annexB/built-ins/unescape/argument_bigint.js
@@ -0,0 +1,18 @@
+// Copyright (C) 2020 Qu Xing. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-unescape-string
+description: Input is a BigInt
+info: |
+    B.2.1.2 unescape ( string )
+
+    1. Set string to ? ToString(string).
+    ....
+features: [BigInt]
+---*/
+
+assert.sameValue(unescape(1n), '1');
+
+assert.sameValue(unescape(-1n), '-1');
+
+reportCompare(0, 0);