XMLUnit
XMLUnit for Java provides two JUnit extension classes, XMLAssert and XMLTestCase, and a set of supporting classes (e.g. Diff, DetailedDiff, Transform, SimpleXpathEngine, Validator, NodeTest) that allow assertions to be made about:
* The differences between two pieces of XML
* The outcome of transforming a piece of XML using XSLT
* The evaluation of an XPath expression on a piece of XML
* The validity of a piece of XML
* Individual nodes in a piece of XML that are exposed by DOM Traversal
XMLUnit for Java can also treat HTML content (even badly-formed HTML) as valid XML to allow these assertions to be made about the content of web pages too.
(追記) (追記ここまで)
License
BSD License