1 files changed, 33 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/ArrayBuffer/prototype/slice/negative-start.js b/js/src/tests/test262/built-ins/ArrayBuffer/prototype/slice/negative-start.js
new file mode 100644
index 0000000000..6beac51f68
--- /dev/null
+++ b/js/src/tests/test262/built-ins/ArrayBuffer/prototype/slice/negative-start.js
@@ -0,0 +1,33 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-arraybuffer.prototype.slice
+description: >
+  Negative `start` index is relative to [[ArrayBufferByteLength]].
+info: |
+  ArrayBuffer.prototype.slice ( start, end )
+
+  ...
+  8. If relativeStart < 0, let first be max((len + relativeStart),0); else let first be min(relativeStart, len).
+  ...
+---*/
+
+var arrayBuffer = new ArrayBuffer(8);
+
+var start = -5,
+  end = 6;
+var result = arrayBuffer.slice(start, end);
+assert.sameValue(result.byteLength, 3, "slice(-5, 6)");
+
+var start = -12,
+  end = 6;
+var result = arrayBuffer.slice(start, end);
+assert.sameValue(result.byteLength, 6, "slice(-12, 6)");
+
+var start = -Infinity,
+  end = 6;
+var result = arrayBuffer.slice(start, end);
+assert.sameValue(result.byteLength, 6, "slice(-Infinity, 6)");
+
+reportCompare(0, 0);