1 files changed, 49 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/JSON/stringify/space-number-object.js b/js/src/tests/test262/built-ins/JSON/stringify/space-number-object.js
new file mode 100644
index 0000000000..8bce0f4b86
--- /dev/null
+++ b/js/src/tests/test262/built-ins/JSON/stringify/space-number-object.js
@@ -0,0 +1,49 @@
+// Copyright (C) 2012 Ecma International. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-json.stringify
+description: >
+  Number objects are converted to primitives using ToNumber.
+info: |
+  JSON.stringify ( value [ , replacer [ , space ] ] )
+
+  [...]
+  5. If Type(space) is Object, then
+    a. If space has a [[NumberData]] internal slot, then
+      i. Set space to ? ToNumber(space).
+---*/
+
+var obj = {
+  a1: {
+    b1: [1, 2, 3, 4],
+    b2: {
+      c1: 1,
+      c2: 2,
+    },
+  },
+  a2: 'a2',
+};
+
+assert.sameValue(
+  JSON.stringify(obj, null, new Number(1)),
+  JSON.stringify(obj, null, 1)
+);
+
+var num = new Number(1);
+num.toString = function() { throw new Test262Error('should not be called'); };
+num.valueOf = function() { return 3; };
+
+assert.sameValue(
+  JSON.stringify(obj, null, num),
+  JSON.stringify(obj, null, 3)
+);
+
+var abrupt = new Number(4);
+abrupt.toString = function() { throw new Test262Error(); };
+abrupt.valueOf = function() { throw new Test262Error(); };
+
+assert.throws(Test262Error, function() {
+  JSON.stringify(obj, null, abrupt);
+});
+
+reportCompare(0, 0);