diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/string-repeat.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/string-repeat.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,30 @@
+/* Test String.prototype.repeat */
+
+load(libdir + 'asserts.js');
+
+assertEq("abc".repeat(1), "abc");
+assertEq("abc".repeat(2), "abcabc");
+assertEq("abc".repeat(3), "abcabcabc");
+assertEq("a".repeat(10), "aaaaaaaaaa");
+assertEq("abc".repeat(0), "");
+assertEq("abc".repeat(2.9), "abcabc");
+
+var myobj = {toString : (function () "abc"), repeat : String.prototype.repeat};
+assertEq(myobj.repeat(1), "abc");
+assertEq(myobj.repeat(2), "abcabc");
+
+assertThrowsInstanceOf(function() {
+                         "abc".repeat(-1);
+                       }, RangeError,
+                       "String.prototype.repeat should raise RangeError on negative arguments");
+assertThrowsInstanceOf(function() {
+                         "abc".repeat(Number.POSITIVE_INFINITY);
+                       }, RangeError,
+                       "String.prototype.repeat should raise RangeError on excedding maximum string length");
+assertThrowsInstanceOf(function() {
+                         "abc".repeat(1 << 29);
+                       }, RangeError,
+                       "String.prototype.repeat should raise RangeError on excedding maximum string length");
+
+assertEq("".repeat(5), "");
+assertEq("".repeat(1 << 29), "");