1 files changed, 36 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/GeneratorFunction/has-instance.js b/js/src/tests/test262/built-ins/GeneratorFunction/has-instance.js
new file mode 100644
index 0000000000..fe5fab5430
--- /dev/null
+++ b/js/src/tests/test262/built-ins/GeneratorFunction/has-instance.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2013 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 25.2
+description: >
+    Generator function instances are correctly reported as instances of the
+    GeneratorFunction intrinsic.
+features: [generators]
+---*/
+
+var GeneratorFunction = Object.getPrototypeOf(function*() {}).constructor;
+
+function* gDecl() {}
+var gExpr = function*() {};
+
+assert(
+  gDecl instanceof GeneratorFunction,
+  'Generators created via GeneratorDeclaration syntax are proper instances of GeneratorFunction'
+);
+
+assert(
+  gExpr instanceof GeneratorFunction,
+  'Generators created via GeneratorExpression syntax are proper instances of GeneratorFunction'
+);
+
+assert(
+  new GeneratorFunction() instanceof GeneratorFunction,
+  'Generators created via constructor invocation of GeneratorFunction are proper instances of GeneratorFunction'
+);
+
+assert(
+  GeneratorFunction() instanceof GeneratorFunction,
+  'Generators created via function invocation of GeneratorFunction are proper instances of GeneratorFunction'
+);
+
+reportCompare(0, 0);