diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma_6/String/fromCodePoint.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma_6/String/fromCodePoint.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,48 @@
+var BUGNUMBER = 918879;
+var summary = 'String.fromCodePoint';
+
+print(BUGNUMBER + ": " + summary);
+
+// Tests taken from:
+// https://github.com/mathiasbynens/String.fromCodePoint/blob/master/tests/tests.js
+
+assertEq(String.fromCodePoint.length, 0);
+assertEq(String.propertyIsEnumerable('fromCodePoint'), false);
+
+assertEq(String.fromCodePoint(''), '\0');
+assertEq(String.fromCodePoint(), '');
+assertEq(String.fromCodePoint(-0), '\0');
+assertEq(String.fromCodePoint(0), '\0');
+assertEq(String.fromCodePoint(0x1D306), '\uD834\uDF06');
+assertEq(String.fromCodePoint(0x1D306, 0x61, 0x1D307), '\uD834\uDF06a\uD834\uDF07');
+assertEq(String.fromCodePoint(0x61, 0x62, 0x1D307), 'ab\uD834\uDF07');
+assertEq(String.fromCodePoint(false), '\0');
+assertEq(String.fromCodePoint(null), '\0');
+
+assertThrowsInstanceOf(function() { String.fromCodePoint('_'); }, RangeError);
+assertThrowsInstanceOf(function() { String.fromCodePoint('+Infinity'); }, RangeError);
+assertThrowsInstanceOf(function() { String.fromCodePoint('-Infinity'); }, RangeError);
+assertThrowsInstanceOf(function() { String.fromCodePoint(-1); }, RangeError);
+assertThrowsInstanceOf(function() { String.fromCodePoint(0x10FFFF + 1); }, RangeError);
+assertThrowsInstanceOf(function() { String.fromCodePoint(3.14); }, RangeError);
+assertThrowsInstanceOf(function() { String.fromCodePoint(3e-2); }, RangeError);
+assertThrowsInstanceOf(function() { String.fromCodePoint(Infinity); }, RangeError);
+assertThrowsInstanceOf(function() { String.fromCodePoint(NaN); }, RangeError);
+assertThrowsInstanceOf(function() { String.fromCodePoint(undefined); }, RangeError);
+assertThrowsInstanceOf(function() { String.fromCodePoint({}); }, RangeError);
+
+var counter = Math.pow(2, 15) * 3 / 2;
+var result = [];
+while (--counter >= 0) {
+        result.push(0); // one code unit per symbol
+}
+String.fromCodePoint.apply(null, result); // must not throw
+
+var counter = Math.pow(2, 15) * 3 / 2;
+var result = [];
+while (--counter >= 0) {
+        result.push(0xFFFF + 1); // two code units per symbol
+}
+String.fromCodePoint.apply(null, result); // must not throw
+
+reportCompare(0, 0, "ok");