1 files changed, 17 insertions, 0 deletions
diff --git a/third_party/webkit/PerformanceTests/six-speed/tests/map-set.es6 b/third_party/webkit/PerformanceTests/six-speed/tests/map-set.es6
new file mode 100644
index 0000000000..583450d1db
--- /dev/null
+++ b/third_party/webkit/PerformanceTests/six-speed/tests/map-set.es6
@@ -0,0 +1,17 @@
+function fn() {
+  var map = new Map(),
+      set = new Set();
+
+  for (var i = 0; i < 250; i++) {
+    map.set(i, i);
+    set.add(i);
+  }
+
+  map.set('foo', 'bar');
+  set.add('bar');
+
+  return map.has('foo') && set.has('bar');
+}
+
+assertEqual(fn(), true);
+test(fn);