Calling a generator function returns a generator object

test/mjsunit/harmony/generators-objects.js

Index: test/mjsunit/harmony/generators-objects.js
diff --git a/test/mjsunit/harmony/generators-instantiation.js b/test/mjsunit/harmony/generators-objects.js
similarity index 79%
rename from test/mjsunit/harmony/generators-instantiation.js
rename to test/mjsunit/harmony/generators-objects.js
index 1255f9705c479c5966cf916e378aef06033b8b7a..0c36818c8e04df37be72f46d71d8b8f33e4fb876 100644
--- a/test/mjsunit/harmony/generators-instantiation.js
+++ b/test/mjsunit/harmony/generators-objects.js
@@ -45,5 +45,24 @@ function TestContextAllocation() {
   g4();
   g5(["foo"]);
 }
-
 TestContextAllocation();
+
+
+// Test the properties and prototype of a generator object.
+function TestGeneratorObject() {
+  function* g() { yield 1; }
+
+  var iter = g();
+  assertSame(g.prototype, Object.getPrototypeOf(iter));
+  assertTrue(iter instanceof g);
+  assertEquals([], Object.getOwnPropertyNames(iter));
+  assertTrue(iter !== g());
+
+  // g() is the same as new g().
+  iter = new g();
+  assertSame(g.prototype, Object.getPrototypeOf(iter));
+  assertTrue(iter instanceof g);
+  assertEquals([], Object.getOwnPropertyNames(iter));
+  assertTrue(iter !== new g());
+}
+TestGeneratorObject();