Calling a generator function returns a generator object

test/mjsunit/harmony/generators-iteration.js

Index: test/mjsunit/harmony/generators-iteration.js
diff --git a/test/mjsunit/harmony/generators-iteration.js b/test/mjsunit/harmony/generators-iteration.js
index 1255f9705c479c5966cf916e378aef06033b8b7a..9cd895562183b586ad52f2458a6b616457b5f6d6 100644
--- a/test/mjsunit/harmony/generators-iteration.js
+++ b/test/mjsunit/harmony/generators-iteration.js
@@ -46,4 +46,23 @@ function TestContextAllocation() {
   g5(["foo"]);
 }
 
+// Test the properties and prototype of an iterator.
+function TestGeneratorIterator() {
+  function* g() { yield 1; }
+
+  var iterator = g();
+  assertSame(g.prototype, Object.getPrototypeOf(iterator));
+  assertTrue(iterator instanceof g);
+  assertEquals([], Object.getOwnPropertyNames(iterator));
+  assertTrue(iterator !== g());
+
+  // g() is the same as new g().
+  iterator = new g();
+  assertSame(g.prototype, Object.getPrototypeOf(iterator));
+  assertTrue(iterator instanceof g);
+  assertEquals([], Object.getOwnPropertyNames(iterator));
+  assertTrue(iterator !== new g());
+}
+
 TestContextAllocation();
+TestGeneratorIterator();