Adding upstream version 86.0.1.upstream/86.0.1upstream

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

1 files changed, 64 insertions, 0 deletions

diff --git a/js/src/tests/non262/Function/arguments-caller-callee.js b/js/src/tests/non262/Function/arguments-caller-callee.js
new file mode 100644
index 0000000000..57efd9eb91
--- /dev/null
+++ b/js/src/tests/non262/Function/arguments-caller-callee.js
@@ -0,0 +1,64 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+var gTestfile = 'arguments-caller-callee.js';
+var BUGNUMBER = 514563;
+var summary = "arguments.caller and arguments.callee are poison pills in ES5, " +
+              "later changed in ES2017 to only poison pill arguments.callee.";
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+// behavior
+
+function expectTypeError(fun)
+{
+  try
+  {
+    fun();
+    throw new Error("didn't throw");
+  }
+  catch (e)
+  {
+    assertEq(e instanceof TypeError, true,
+             "expected TypeError calling function" +
+             ("name" in fun ? " " + fun.name : "") + ", instead got: " + e);
+  }
+}
+
+function bar() { "use strict"; return arguments; }
+assertEq(bar().caller, undefined); // No error when accessing arguments.caller in ES2017+
+expectTypeError(function barCallee() { bar().callee; });
+
+function baz() { return arguments; }
+assertEq(baz().callee, baz);
+
+
+// accessor identity
+
+function strictMode() { "use strict"; return arguments; }
+var canonicalTTE = Object.getOwnPropertyDescriptor(strictMode(), "callee").get;
+
+var args = strictMode();
+
+var argsCaller = Object.getOwnPropertyDescriptor(args, "caller");
+assertEq(argsCaller, undefined);
+
+var argsCallee = Object.getOwnPropertyDescriptor(args, "callee");
+assertEq("get" in argsCallee, true);
+assertEq("set" in argsCallee, true);
+assertEq(argsCallee.get, canonicalTTE);
+assertEq(argsCallee.set, canonicalTTE);
+
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("All tests passed!");