1 files changed, 47 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/module-code/instn-local-bndng-const.js b/js/src/tests/test262/language/module-code/instn-local-bndng-const.js
new file mode 100644
index 0000000000..1ca1c897df
--- /dev/null
+++ b/js/src/tests/test262/language/module-code/instn-local-bndng-const.js
@@ -0,0 +1,47 @@
+// |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 created in the lexical environment record prior to
+    execution for `const` declarations
+esid: sec-moduledeclarationinstantiation
+info: |
+    [...]
+    17. For each element d in lexDeclarations do
+        a. For each element dn of the BoundNames of d do
+           i. If IsConstantDeclaration of d is true, then
+              1. Perform ! envRec.CreateImmutableBinding(dn, true).
+    [...]
+includes: [fnGlobalObject.js]
+flags: [module]
+---*/
+
+var global = fnGlobalObject();
+
+assert.throws(ReferenceError, function() {
+  typeof test262;
+}, 'Binding is created but not initialized.');
+assert.sameValue(
+  Object.getOwnPropertyDescriptor(global, 'test262'), undefined
+);
+
+const test262 = 23;
+
+assert.sameValue(test262, 23);
+assert.sameValue(
+  Object.getOwnPropertyDescriptor(global, 'test262'), undefined
+);
+
+assert.throws(TypeError, function() {
+  test262 = null;
+});
+
+assert.sameValue(test262, 23, 'binding is not mutable');
+assert.sameValue(
+  Object.getOwnPropertyDescriptor(global, 'test262'),
+  undefined,
+  'global binding is not effected by attempts to modify'
+);
+
+reportCompare(0, 0);