1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/isNaN/return-abrupt-from-tonumber-number.js b/js/src/tests/test262/built-ins/isNaN/return-abrupt-from-tonumber-number.js
new file mode 100644
index 0000000000..78ae26e8f0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/isNaN/return-abrupt-from-tonumber-number.js
@@ -0,0 +1,34 @@
+// Copyright (C) 2016 The V8 Project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-isnan-number
+description: >
+  Return abrupt completion from ToNumber(number)
+info: |
+  isNaN (number)
+
+  1. Let num be ? ToNumber(number).
+---*/
+
+var obj1 = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+
+var obj2 = {
+  toString: function() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, function() {
+  isNaN(obj1);
+}, "valueOf");
+
+assert.throws(Test262Error, function() {
+  isNaN(obj2);
+}, "toString");
+
+reportCompare(0, 0);