1 files changed, 32 insertions, 0 deletions
diff --git a/testing/web-platform/tests/FileAPI/blob/Blob-slice-overflow.any.js b/testing/web-platform/tests/FileAPI/blob/Blob-slice-overflow.any.js
new file mode 100644
index 0000000000..388fd9282c
--- /dev/null
+++ b/testing/web-platform/tests/FileAPI/blob/Blob-slice-overflow.any.js
@@ -0,0 +1,32 @@
+// META: title=Blob slice overflow
+'use strict';
+
+var text = '';
+
+for (var i = 0; i < 2000; ++i) {
+  text += 'A';
+}
+
+test(function() {
+  var blob = new Blob([text]);
+  var sliceBlob = blob.slice(-1, blob.size);
+  assert_equals(sliceBlob.size, 1, "Blob slice size");
+}, "slice start is negative, relativeStart will be max((size + start), 0)");
+
+test(function() {
+  var blob = new Blob([text]);
+  var sliceBlob = blob.slice(blob.size + 1, blob.size);
+  assert_equals(sliceBlob.size, 0, "Blob 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(blob.size - 2, -1);
+  assert_equals(sliceBlob.size, 1, "Blob slice size");
+}, "slice end is negative, relativeEnd will be max((size + end), 0)");
+
+test(function() {
+  var blob = new Blob([text]);
+  var sliceBlob = blob.slice(blob.size - 2, blob.size + 999);
+  assert_equals(sliceBlob.size, 2, "Blob slice size");
+}, "slice end is greater than blob size, relativeEnd will be min(end, size)");