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Test Info:

<!DOCTYPE HTML>
<html>
<!--
-->
<head>
<title>Test for Bug 404320</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=404320">Mozilla Bug 404320</a>
<p id="display"></p>
<div id="content">
<iframe id="testIframe"></iframe>
</div>
<pre id="test">
<script class="testbody" type="text/javascript">
/** Test for Bug 404320 **/
SimpleTest.waitForExplicitFinish();
function runTests() {
var win = document.getElementById("testIframe").contentWindow;
var doc = document.getElementById("testIframe").contentDocument;
function testFormatBlock(tag, withAngleBrackets, shouldSucceed) {
win.getSelection().selectAllChildren(doc.body.firstChild);
doc.execCommand("FormatBlock", false,
withAngleBrackets ? tag : "<" + tag + ">");
var resultNode;
if (shouldSucceed && (tag == "dd" || tag == "dt")) {
is(doc.body.firstChild.tagName, "DL", "tag was changed");
resultNode = doc.body.firstChild.firstChild;
} else {
resultNode = doc.body.firstChild;
}
is(resultNode.tagName, shouldSucceed ? tag.toUpperCase() : "P", "tag was changed");
}
function formatBlockTests(tags, shouldSucceed) {
var html = "<p>Content</p>";
for (var i = 0; i < tags.length; ++i) {
var tag = tags[i];
doc.body.innerHTML = html;
testFormatBlock(tag, false, shouldSucceed);
doc.body.innerHTML = html;
testFormatBlock(tag, true, shouldSucceed);
}
}
doc.designMode = "on";
var goodTags = [ "address",
"blockquote",
"dd",
"div",
"dl",
"dt",
"h1",
"h2",
"h3",
"h4",
"h5",
"h6",
"p",
"pre" ];
var badTags = [ "b",
"i",
"span",
"foo" ];
formatBlockTests(goodTags, true);
formatBlockTests(badTags, false);
SimpleTest.finish();
}
addLoadEvent(runTests);
</script>
</pre>
</body>
</html>