LayoutTests/editing/inserting/return-key-in-hidden-field.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <body>
 <p>This tests to make sure that inserting a line break in a hidden textarea doesn't crash.
 To repro manually, press enter or return in the textarea.  We pass if we don't crash.</p>
 <div id="d">
   <textarea id="textarea"></textarea>
 </div>
 <div id="d2" contenteditable="true">
 </div>
 <script>
 document.addEventListener("keydown", function(e) {
     if (e.keyCode == 13)
         document.getElementById("d").style.visibility = "hidden";
 }, false);

 function runTest()
 {
     document.getElementById("textarea").focus();

     if (!window.testRunner)
         return;
     testRunner.dumpAsText();
     document.execCommand('InsertParagraph', false, null);

     document.getElementById("d2").focus();
     document.getElementById("d2").style.visibility = "";

     testRunner.dumpAsText();
     document.execCommand('InsertParagraph', false, null);
 }
 runTest();

 </script>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<body>
	<p>This tests to make sure that inserting a line break in a hidden textarea doesn't crash.
	To repro manually, press enter or return in the textarea. We pass if we don't crash.</p>
	<div id="d">
	<textarea id="textarea"></textarea>
	</div>
	<div id="d2" contenteditable="true">
	</div>
	<script>
	document.addEventListener("keydown", function(e) {
	if (e.keyCode == 13)
	document.getElementById("d").style.visibility = "hidden";
	}, false);

	function runTest()
	{
	document.getElementById("textarea").focus();

	if (!window.testRunner)
	return;
	testRunner.dumpAsText();
	document.execCommand('InsertParagraph', false, null);

	document.getElementById("d2").focus();
	document.getElementById("d2").style.visibility = "";

	testRunner.dumpAsText();
	document.execCommand('InsertParagraph', false, null);
	}
	runTest();

	</script>
	</body>
	</html>