1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/unshift/throws-if-integer-limit-exceeded.js b/js/src/tests/test262/built-ins/Array/prototype/unshift/throws-if-integer-limit-exceeded.js
new file mode 100644
index 0000000000..0e9ceada82
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/unshift/throws-if-integer-limit-exceeded.js
@@ -0,0 +1,40 @@
+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-array.prototype.unshift
+description: >
+  A TypeError is thrown if the new length exceeds 2^53-1.
+info: |
+  1. ...
+  2. Let len be ? ToLength(? Get(O, "length")).
+  3. Let argCount be the number of actual arguments.
+  4. If argCount > 0, then
+    a. If len+argCount > 2^53-1, throw a TypeError exception.
+    b. ...
+features: [exponentiation]
+---*/
+
+var arrayLike = {};
+
+arrayLike.length = 2 ** 53 - 1;
+assert.throws(TypeError, function() {
+  Array.prototype.unshift.call(arrayLike, null);
+}, "Length is 2**53 - 1");
+
+arrayLike.length = 2 ** 53;
+assert.throws(TypeError, function() {
+  Array.prototype.unshift.call(arrayLike, null);
+}, "Length is 2**53");
+
+arrayLike.length = 2 ** 53 + 2;
+assert.throws(TypeError, function() {
+  Array.prototype.unshift.call(arrayLike, null);
+}, "Length is 2**53 + 2");
+
+arrayLike.length = Infinity;
+assert.throws(TypeError, function() {
+  Array.prototype.unshift.call(arrayLike, null);
+}, "Length is Infinity");
+
+reportCompare(0, 0);