1 files changed, 25 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Number/isSafeInteger/safe-integers.js b/js/src/tests/test262/built-ins/Number/isSafeInteger/safe-integers.js
new file mode 100644
index 0000000000..721a045434
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Number/isSafeInteger/safe-integers.js
@@ -0,0 +1,25 @@
+// 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-number.issafeinteger
+description: >
+  Return true if argument is a safe integer
+info: |
+  Number.isSafeInteger ( number )
+
+  [...]
+  3. Let integer be ToInteger(number).
+  4. If integer is not equal to number, return false.
+  5. If abs(integer) ≤ 2**53-1, return true.
+  [...]
+---*/
+
+assert.sameValue(Number.isSafeInteger(1), true, "1");
+assert.sameValue(Number.isSafeInteger(-0), true, "-0");
+assert.sameValue(Number.isSafeInteger(0), true, "0");
+assert.sameValue(Number.isSafeInteger(-1), true, "-1");
+assert.sameValue(Number.isSafeInteger(9007199254740991), true, "9007199254740991");
+assert.sameValue(Number.isSafeInteger(-9007199254740991), true, "-9007199254740991");
+
+reportCompare(0, 0);