1 files changed, 20 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/JSON/stringify/value-bigint-tojson.js b/js/src/tests/test262/built-ins/JSON/stringify/value-bigint-tojson.js
new file mode 100644
index 0000000000..6f2966fded
--- /dev/null
+++ b/js/src/tests/test262/built-ins/JSON/stringify/value-bigint-tojson.js
@@ -0,0 +1,20 @@
+// Copyright (C) 2017 Robin Templeton. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: BigInt toJSON method
+esid: sec-serializejsonproperty
+info: |
+  Runtime Semantics: SerializeJSONProperty ( key, holder )
+
+  2. If Type(value) is Object or BigInt, then
+    a. Let toJSON be ? GetGetV(value, "toJSON").
+    b. If IsCallable(toJSON) is true, then
+      i. Set value to ? Call(toJSON, value, « key »).
+features: [BigInt]
+---*/
+
+BigInt.prototype.toJSON = function () { return this.toString(); };
+assert.sameValue(JSON.stringify(0n), '"0"');
+
+reportCompare(0, 0);