1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/class/subclass/builtin-objects/GeneratorFunction/super-must-be-called.js b/js/src/tests/test262/language/statements/class/subclass/builtin-objects/GeneratorFunction/super-must-be-called.js
new file mode 100644
index 0000000000..6d3aa6004d
--- /dev/null
+++ b/js/src/tests/test262/language/statements/class/subclass/builtin-objects/GeneratorFunction/super-must-be-called.js
@@ -0,0 +1,40 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 25.2.1
+description: >
+  super must be called to initialize GeneratorFunction internal slots
+info: |
+  25.2.1 The GeneratorFunction Constructor
+
+  ...
+
+  GeneratorFunction is designed to be subclassable. It may be used as the value
+  of an extends clause of a class definition. Subclass constructors that intend
+  to inherit the specified GeneratorFunction behaviour must include a super call
+  to the GeneratorFunction constructor to create and initialize subclass
+  instances with the internal slots necessary for built-in GeneratorFunction
+  behaviour.
+  ...
+---*/
+
+var GeneratorFunction = Object.getPrototypeOf(function* () {}).constructor;
+
+class GFn1 extends GeneratorFunction {
+  constructor() {}
+}
+
+assert.throws(ReferenceError, function() {
+  new GFn1();
+});
+
+class GFn2 extends GeneratorFunction {
+  constructor() {
+    super();
+  }
+}
+
+var fn = new GFn2();
+assert(fn instanceof GeneratorFunction);
+
+reportCompare(0, 0);