Adding upstream version 86.0.1.upstream/86.0.1upstream

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

1 files changed, 31 insertions, 0 deletions

diff --git a/js/src/tests/test262/language/expressions/arrow-function/lexical-arguments.js b/js/src/tests/test262/language/expressions/arrow-function/lexical-arguments.js
new file mode 100644
index 0000000000..3af9125bde
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/arrow-function/lexical-arguments.js
@@ -0,0 +1,31 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 14.2.16
+description: >
+    Runtime Semantics: Evaluation
+
+    arguments
+
+    ...
+    4. Let closure be FunctionCreate(Arrow, parameters, ConciseBody, scope, strict).
+    ...
+
+    The non-normative note elaborates on the "scope" argument:
+
+    An ArrowFunction does not define local bindings for arguments, super, this, or new.target. Any reference to arguments, super, or this within an ArrowFunction must resolve to a binding in a lexically enclosing environment. Typically this will be the Function Environment of an immediately enclosing function. Even though an ArrowFunction may contain references to super, the function object created in step 4 is not made into a method by performing MakeMethod. An ArrowFunction that references super is always contained within a non-ArrowFunction and the necessary state to implement super is accessible via the scope that is captured by the function object of the ArrowFunction.
+---*/
+
+function f() {
+  var args = arguments;
+
+  var af = _ => {
+    return arguments;
+  };
+
+  return args === af();
+}
+
+assert(f());
+
+reportCompare(0, 0);