LayoutTests/js/dom/error-object-write-and-detele-for-stack-property.html - WebKit - Git at Google

 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
 <head>
 <script src="../../resources/js-test-pre.js"></script>
 </head>
 <body>
     <p>This test verifies that the stack property able to be deleted and written to by the developer.</p>

     <pre id="console"></pre>


     <script>
     if (window.testRunner)
         testRunner.dumpAsText();

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

     var e = new Error("hello");
     var stack = e.stack;
     log("Creating new Error e");
     shouldBeTrue(' typeof(e.stack) == "string"');

     delete(e.stack);
     log("Deleting the stack property should make it undefined.")
     shouldBeUndefined('e.stack');

     log("Writing to the stack property.");
     e.stack = "Brand new stack!";
     shouldBeTrue('e.stack == "Brand new stack!"');

     successfullyParsed = true;
     </script>
 </body>
	<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
	<head>
	<script src="../../resources/js-test-pre.js"></script>
	</head>
	<body>
	<p>This test verifies that the stack property able to be deleted and written to by the developer.</p>

	<pre id="console"></pre>


	<script>
	if (window.testRunner)
	testRunner.dumpAsText();

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

	var e = new Error("hello");
	var stack = e.stack;
	log("Creating new Error e");
	shouldBeTrue(' typeof(e.stack) == "string"');

	delete(e.stack);
	log("Deleting the stack property should make it undefined.")
	shouldBeUndefined('e.stack');

	log("Writing to the stack property.");
	e.stack = "Brand new stack!";
	shouldBeTrue('e.stack == "Brand new stack!"');

	successfullyParsed = true;
	</script>
	</body>