1 files changed, 39 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/SharedArrayBuffer/negative-length-throws.js b/js/src/tests/test262/built-ins/SharedArrayBuffer/negative-length-throws.js
new file mode 100644
index 0000000000..37464e9ec5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/SharedArrayBuffer/negative-length-throws.js
@@ -0,0 +1,39 @@
+// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// Copyright (C) 2016 The V8 Project authors. All rights reserved.
+// Copyright (C) 2017 Mozilla Corporation. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-sharedarraybuffer-length
+description: >
+  Throws a Range Error if length represents an integer < 0
+info: |
+  SharedArrayBuffer( length )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let byteLength be ? ToIndex(length).
+
+  ToIndex( value )
+
+  1. If value is undefined, then
+    a. Let index be 0.
+  2. Else,
+    a. Let integerIndex be ? ToInteger(value).
+    b. If integerIndex < 0, throw a RangeError exception.
+  ...
+features: [SharedArrayBuffer]
+---*/
+
+assert.throws(RangeError, function() {
+  new SharedArrayBuffer(-1);
+});
+
+assert.throws(RangeError, function() {
+  new SharedArrayBuffer(-1.1);
+});
+
+assert.throws(RangeError, function() {
+  new SharedArrayBuffer(-Infinity);
+});
+
+reportCompare(0, 0);