1 files changed, 45 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/String/prototype/startsWith/out-of-bounds-position.js b/js/src/tests/test262/built-ins/String/prototype/startsWith/out-of-bounds-position.js
new file mode 100644
index 0000000000..820e85662d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/String/prototype/startsWith/out-of-bounds-position.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 21.1.3.18
+description: >
+  Returns false if searchLength + start position is greater than string length.
+info: |
+  21.1.3.18 String.prototype.startsWith ( searchString [ , position ] )
+
+  ...
+  11. Let len be the number of elements in S.
+  12. Let start be min(max(pos, 0), len).
+  13. Let searchLength be the number of elements in searchStr.
+  14. If searchLength+start is greater than len, return false.
+  ...
+---*/
+
+var str = 'The future is cool!';
+
+assert.sameValue(
+  str.startsWith('!', str.length), false,
+  'str.startsWith("!", str.length) returns false'
+);
+
+assert.sameValue(
+  str.startsWith('!', 100), false,
+  'str.startsWith("!", 100) returns false'
+);
+
+assert.sameValue(
+  str.startsWith('!', Infinity), false,
+  'str.startsWith("!", Infinity) returns false'
+);
+
+assert(
+  str.startsWith('The future', -1),
+  'position argument < 0 will search from the start of the string (-1)'
+);
+
+assert(
+  str.startsWith('The future', -Infinity),
+  'position argument < 0 will search from the start of the string (-Infinity)'
+);
+
+reportCompare(0, 0);