1 files changed, 42 insertions, 0 deletions
diff --git a/testing/web-platform/tests/FileAPI/blob/Blob-slice-overflow.html b/testing/web-platform/tests/FileAPI/blob/Blob-slice-overflow.html
new file mode 100644
index 000000000..56891af5f
--- /dev/null
+++ b/testing/web-platform/tests/FileAPI/blob/Blob-slice-overflow.html
@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Blob slice overflow</title>
+<link rel="author" title="Intel" href="http://www.intel.com">
+<link rel="help" href="https://w3c.github.io/FileAPI/#dfn-slice">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+
+var text = '';
+
+for (var i = 0; i < 2000; ++i) {
+  text += 'A';
+}
+
+test(function() {
+  var blob = new Blob([text]);
+  var sliceBlob = blob.slice(-1, 2000);
+  assert_equals(sliceBlob.size, 2000-(2000-1), "Bolb slice size");
+}, "slice start is negative, relativeStart will be max((size + start), 0)");
+
+test(function() {
+  var blob = new Blob([text]);
+  var sliceBlob = blob.slice(2001, 2000);
+  assert_equals(sliceBlob.size, 0, "Bolb slice size");
+}, "slice start is greater than blob size, relativeStart will be min(start, size)");
+
+test(function() {
+  var blob = new Blob([text]);
+  var sliceBlob = blob.slice(1998, -1);
+  assert_equals(sliceBlob.size, (2000-1)-1998, "Bolb slice size");
+}, "slice end is negative, relativeEnd will be max((size + end), 0)");
+
+test(function() {
+  var blob = new Blob([text]);
+  var sliceBlob = blob.slice(1998, 2999);
+  assert_equals(sliceBlob.size, 2000-1998, "Bolb slice size");
+}, "slice end is greater than blob size, relativeEnd will be min(end, size)");
+
+</script>
+