1 files changed, 53 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/module-code/instn-local-bndng-gen.js b/js/src/tests/test262/language/module-code/instn-local-bndng-gen.js
new file mode 100644
index 0000000000..68129776c9
--- /dev/null
+++ b/js/src/tests/test262/language/module-code/instn-local-bndng-gen.js
@@ -0,0 +1,53 @@
+// |reftest| module
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+    Mutable bindings are initialized in the lexical environment record prior to
+    execution for generator function declarations
+esid: sec-moduledeclarationinstantiation
+info: |
+    [...]
+    15. For each element d in varDeclarations do
+        a. For each element dn of the BoundNames of d do
+           i. If dn is not an element of declaredVarNames, then
+              1. Perform ! envRec.CreateMutableBinding(dn, false).
+              2. Call envRec.InitializeBinding(dn, undefined).
+              3. Append dn to declaredVarNames.
+    [...]
+includes: [fnGlobalObject.js]
+flags: [module]
+---*/
+
+var global = fnGlobalObject();
+
+assert.sameValue(
+  typeof test262, 'function', 'generator function value is hoisted'
+);
+assert.sameValue(
+  test262().next().value,
+  'test262',
+  'hoisted generator function value is correct'
+);
+assert.sameValue(
+  Object.getOwnPropertyDescriptor(global, 'test262'), undefined
+);
+
+test262 = null;
+assert.sameValue(test262, null, 'binding is mutable');
+assert.sameValue(
+  Object.getOwnPropertyDescriptor(global, 'test262'), undefined
+);
+
+function* test262() { return 'test262'; }
+
+assert.sameValue(
+  test262, null, 'binding is not effected by evaluation of declaration'
+);
+assert.sameValue(
+  Object.getOwnPropertyDescriptor(global, 'test262'),
+  undefined,
+  'global binding is not effected by evaluation of declaration'
+);
+
+reportCompare(0, 0);