1 files changed, 27 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Set/prototype/size/returns-count-of-present-values-before-after-add-delete.js b/js/src/tests/test262/built-ins/Set/prototype/size/returns-count-of-present-values-before-after-add-delete.js
new file mode 100644
index 0000000000..6a6c083bae
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Set/prototype/size/returns-count-of-present-values-before-after-add-delete.js
@@ -0,0 +1,27 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-get-set.prototype.size
+description: >
+    get Set.prototype.size
+
+    5. Let count be 0.
+    6. For each e that is an element of entries
+      a. If e is not empty, set count to count+1.
+
+    Before and after add(), delete()
+---*/
+
+var s = new Set();
+
+assert.sameValue(s.size, 0, "The value of `s.size` is `0`");
+
+s.add(0);
+
+assert.sameValue(s.size, 1, "The value of `s.size` is `1`, after executing `s.add(0)`");
+
+s.delete(0);
+
+assert.sameValue(s.size, 0, "The value of `s.size` is `0`, after executing `s.delete(0)`");
+
+reportCompare(0, 0);