v8/test/mjsunit/argument-named-arguments.js

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// Copyright 2011 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Tests to verify proper arguments handling if the arguments
// variable is declared as a parameter or local variable.
function e(a) {
assertEquals(9, a.length);
assertEquals("arguments", a);
};
e("arguments");
function f(arguments) {
assertEquals(9, arguments.length);
assertEquals("arguments", arguments);
};
f("arguments");
function g(x) {
var arguments;
assertEquals("arguments", x);
assertEquals(1, arguments.length);
assertEquals("[object Arguments]", '' + arguments);
};
g("arguments");
function h(x) {
assertEquals("arguments", x);
assertEquals(1, arguments.length);
assertEquals("[object Arguments]", '' + arguments);
var arguments = "foobar";
assertEquals("arguments", x);
assertEquals(6, arguments.length);
assertEquals("foobar", '' + arguments);
};
h("arguments");