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|  | 1 <!DOCTYPE html> | 
|  | 2 <script src="../../resources/testharness.js"></script> | 
|  | 3 <script src="../../resources/testharnessreport.js"></script> | 
|  | 4 <script> | 
|  | 5 test(function() { | 
|  | 6   var doc = document.implementation.createDocument("http://www.w3.org/2000/svg",
     "svg", null); | 
|  | 7   doc.title = 'old'; | 
|  | 8   var titleElement = doc.querySelector('title'); | 
|  | 9   var observer = new MutationObserver(function(mutations) { | 
|  | 10     assert_equals(mutations.length, 1); | 
|  | 11     assert_equals(mutations[0].type, 'childList'); | 
|  | 12     assert_equals(mutations[0].addedNodes[0].data, 'new'); | 
|  | 13     assert_equals(mutations[0].addedNodes.length, 1); | 
|  | 14     assert_equals(mutations[0].removedNodes[0].data, 'old'); | 
|  | 15     assert_equals(mutations[0].removedNodes.length, 1); | 
|  | 16   }); | 
|  | 17 | 
|  | 18   observer.observe(titleElement, { childList: true }); | 
|  | 19   doc.title = 'new'; | 
|  | 20 }, "Test for mutations to childList when setting title of svg document."); | 
|  | 21 </script> | 
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