1 files changed, 135 insertions, 0 deletions
diff --git a/js/src/tests/ecma_3/Function/arguments-001.js b/js/src/tests/ecma_3/Function/arguments-001.js
new file mode 100644
index 000000000..7804aa85c
--- /dev/null
+++ b/js/src/tests/ecma_3/Function/arguments-001.js
@@ -0,0 +1,135 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * Date: 07 May 2001
+ *
+ * SUMMARY:  Testing the arguments object
+ *
+ * See http://bugzilla.mozilla.org/show_bug.cgi?id=72884
+ */
+//-----------------------------------------------------------------------------
+var UBound = 0;
+var BUGNUMBER = 72884;
+var summary = 'Testing the arguments object';
+var status = '';
+var statusitems = [ ];
+var actual = '';
+var actualvalues = [ ];
+var expect= '';
+var expectedvalues = [ ];
+var a = '';
+
+
+status = inSection(1);
+function f()
+{
+  delete arguments.length;
+  return arguments;
+}
+
+a = f();
+actual = a instanceof Object;
+expect = true;
+addThis();
+
+actual = a instanceof Array;
+expect = false;
+addThis();
+
+actual = a.length;
+expect = undefined;
+addThis();
+
+
+
+status = inSection(2);
+a = f(1,2,3);
+actual = a instanceof Object;
+expect = true;
+addThis();
+
+actual = a instanceof Array;
+expect = false;
+addThis();
+
+actual = a.length;
+expect = undefined;
+addThis();
+
+actual = a[0];
+expect = 1;
+addThis();
+
+actual = a[1];
+expect = 2;
+addThis();
+
+actual = a[2];
+expect = 3;
+addThis();
+
+
+
+status = inSection(3);
+/*
+ * Brendan:
+ *
+ * Note that only callee and length can be overridden, so deleting an indexed
+ * property and asking for it again causes it to be recreated by args_resolve:
+ *
+ * function g(){delete arguments[0]; return arguments[0]}
+ * g(42)     // should this print 42?
+ *
+ * I'm not positive this violates ECMA, which allows in chapter 16 for extensions
+ * including properties (does it allow for magically reappearing properties?).  The
+ * delete operator successfully deletes arguments[0] and results in true, but that
+ * is not distinguishable from the case where arguments[0] was delegated to
+ * Arguments.prototype[0], which was how the bad old code worked.
+ *
+ * I'll ponder this last detail...
+ *
+ * UPDATE: Per ECMA-262, delete on an arguments[i] should succeed
+ * and remove that property from the arguments object, leaving any get
+ * of it after the delete to evaluate to undefined.
+ */
+function g()
+{
+  delete arguments[0];
+  return arguments[0];
+}
+actual = g(42);
+expect = undefined;  // not 42...
+addThis();
+
+
+
+//-------------------------------------------------------------------------------------------------
+test();
+//-------------------------------------------------------------------------------------------------
+
+
+function addThis()
+{
+  statusitems[UBound] = status;
+  actualvalues[UBound] = actual;
+  expectedvalues[UBound] = expect;
+  UBound++;
+}
+
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+  for (var i = 0; i < UBound; i++)
+  {
+    reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
+  }
+
+  exitFunc ('test');
+}