1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Set/set-iterable-calls-add.js b/js/src/tests/test262/built-ins/Set/set-iterable-calls-add.js
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+++ b/js/src/tests/test262/built-ins/Set/set-iterable-calls-add.js
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+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 23.2.1.1
+description: >
+    Set ( [ iterable ] )
+
+    When the Set function is called with optional argument iterable the following steps are taken:
+
+    ...
+    7. Else,
+      a. Let adder be Get(set, "add").
+      b. ReturnIfAbrupt(adder).
+      c. If IsCallable(adder) is false, throw a TypeError exception.
+      d. Let iter be GetIterator(iterable).
+      e. ReturnIfAbrupt(iter).
+    ...
+    9. Repeat
+      a. Let next be IteratorStep(iter).
+      b. ReturnIfAbrupt(next).
+      c. If next is false, return set.
+      d. Let nextValue be IteratorValue(next).
+      e. ReturnIfAbrupt(nextValue).
+      f. Let status be Call(adder, set, «nextValue.[[value]]»).
+      g. If status is an abrupt completion, return IteratorClose(iter, status).
+
+---*/
+
+var setAdd = Set.prototype.add;
+var counter = 0;
+
+Set.prototype.add = function(value) {
+  counter++;
+  setAdd.call(this, value);
+};
+
+var s = new Set([1, 2]);
+
+assert.sameValue(counter, 2, "`Set.prototype.add` called twice.");
+
+reportCompare(0, 0);