fast/js/function-dot-arguments-identity.html

<p>This tests verifies the identity of function.arguments vs 'arguments' used locally.
</p>
<pre id="console"></pre>

<script>
function log(s)
{
	document.getElementById("console").appendChild(document.createTextNode(s + "\r\n"));
}

function shouldBe(a, aDescription, b)
{
	if (a == b) {
		log("PASS: " + aDescription + " should be " + b + " and is.");
		return;
	}
	log("FAIL: " + aDescription + " should be " + b + " but instead is " + a + ".");
}

if (window.testRunner) {
	testRunner.dumpAsText();
}

function getArguments() { return arguments.callee.caller.arguments; }

(function() {
	shouldBe(
		getArguments() == arguments,
		"getArguments() == arguments",
		false
	);
})();

(function() {
	shouldBe(
		getArguments() == eval('arguments'),
		"getArguments() == eval('arguments')",
		false
	);
})();

(function() {
	eval("");
	shouldBe(
		getArguments() == arguments,
		"getArguments() == arguments {eval present}",
		false
	);
})();

(function() {
	var f = function() { };
	shouldBe(
		getArguments() == arguments,
		"getArguments() == arguments {function present}",
		false
	);
})();

(function(x) {
	var f = function() { return x; };
	shouldBe(
		getArguments() == arguments,
		"getArguments() == arguments {closure present}",
		false
	);
})(0);

(function() {
	with ({ }) { };
	shouldBe(
		getArguments() == arguments,
		"getArguments() == arguments {with present}",
		false
	);
})();

(function() {
	try { } catch(e) { };
	shouldBe(
		getArguments() == arguments,
		"getArguments() == arguments {catch present}",
		false
	);
})();
(function() {
	var arguments; 
	shouldBe(
		getArguments() == arguments,
		"getArguments() == arguments {var declaration}",
		false
	);
})();

(function() {
	function arguments() { };
	shouldBe(
		getArguments() == arguments,
		"getArguments() == arguments {function declaration}",
		false
	);
})();
</script>