<?xml version="1.0"?> <?xml-stylesheet type="text/css" href="chrome://global/skin"?> <?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=780199 --> <window title="Mozilla Bug 780199" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" onload="test()"> <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/> <!-- test results are displayed in the html:body --> <body xmlns="http://www.w3.org/1999/xhtml"> <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=780199" target="_blank">Mozilla Bug 780199</a> </body> <!-- test code goes here --> <script type="application/javascript"> <![CDATA[ /** Test for Bug 780199 **/ SimpleTest.waitForExplicitFinish(); var b; function callback(r) { is(r[0].type, "attributes"); is(r[0].oldValue, b.getAttribute("src")); setTimeout(continueTest, 500); } function continueTest() { // Check that a new page wasn't loaded. is(b.contentDocument.documentElement.textContent, "testvalue"); SimpleTest.finish(); } function test() { b = document.getElementById("b"); var m = new MutationObserver(callback); m.observe(b, { attributes: true, attributeOldValue: true }); b.contentDocument.documentElement.textContent = "testvalue"; b.setAttribute("src", b.getAttribute("src")); } ]]> </script> <browser id="b" src="data:text/plain,initial"/> </window>