Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 39 insertions, 0 deletions

diff --git a/js/src/tests/test262/language/module-code/instn-local-bndng-for.js b/js/src/tests/test262/language/module-code/instn-local-bndng-for.js
new file mode 100644
index 0000000000..179294b83b
--- /dev/null
+++ b/js/src/tests/test262/language/module-code/instn-local-bndng-for.js
@@ -0,0 +1,39 @@
+// |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 variable declarations within `for` statements
+esid: sec-moduledeclarationinstantiation
+info: |
+    [...]
+    13. Let varDeclarations be the VarScopedDeclarations of code.
+    14. Let declaredVarNames be a new empty List.
+    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).
+    [...]
+includes: [fnGlobalObject.js]
+flags: [module]
+---*/
+
+var global = fnGlobalObject();
+
+assert.sameValue(test262, undefined, 'value is initialized to `undefined`');
+assert.sameValue(
+  Object.getOwnPropertyDescriptor(global, 'test262'), undefined
+);
+
+for (var test262 = null; false; ) {}
+
+assert.sameValue(test262, null, 'binding is mutable');
+assert.sameValue(
+  Object.getOwnPropertyDescriptor(global, 'test262'),
+  undefined,
+  'global binding is not effected by evaluation of declaration'
+);
+
+reportCompare(0, 0);