In addition, all known issues of XMLUnit 1. Testing by Tree Walking 2. And that was the beginning of XMLUnit. One of the main areas where constant "boilerplate" markup is combined with system generated markup is of course in web applications. The test below illustrates how the use of these classes:. Unfortunately even if your DOM implementation does support DocumentTraversal , attributes are not exposed by iteration: For efficiency reasons a Diff stops the comparison process as soon as the first difference is found. 
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Revision History Revision 1. As with many projects some words in XMLUnit have particular meanings so here is a quick overview. Effective Freecode is no longer xmlunir updated content may be stale. The Diff class stores the result of an XML comparison and makes it available through the methods similar and identical. Obviously in this case the pieces of XML are different and the test will fail.
The order of attributes is ignored. This is just another way of saying that testing HTML is easier when it is written to be testable.
The qualifying test node will match the control xmunit node type, as well as the node name and namespace if defined for the control node. All releases Recent releases 1. So for Element nodes, an instance of the ElementQualifier interface is used determine whether a given test Element node qualifies for comparison with xxmlunit control Element node. This separates the decision about whether two Elements should be compared from the decision about whether those two Elements are considered similar.
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The comparison can reveal that two pieces of XML are identicalsimilar or different. Two pieces of XML are identical if there are no differences between them, similar if there are only recoverable differences between them, and different if there are any unrecoverable differences between them.
Common Configuration Options 2. If you change the DifferenceListener or ElementQualifier after calling toString it won't have any effect.
To get all the differences between two pieces of XML an instance of the DetailedDiff class, a subclass of Diffis required. Obviously we could use a DTD or a schema to validate the message output, but this approach wouldn't allow us to xxmlunit between valid XML with correct content e.
The failure message reported by JUnit from the call to myDiff.
A few bugs were fixed. One of the key points about using XPaths with HTML content is that extracting values in tests requires the values to be identifiable.
Difference instances are passed at runtime in notification events to a registered DifferenceListeneran interface whose default implementation is provided by the Diff class. This xmlunih fixes a few bugs and provides a new option for controlling what happens when the documents that are compared contain two XML elements that cannot be matched against each other.
The failure message indicates both what the difference is and the XPath locations of the nodes that were being compared:. Freecode is a BIZX service.
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When writing a system that exchanges XML messages with third parties there are times when you would like to validate the XML against a DTD that is not available to the recipient of the message and so cannot be referenced in the message itself.
The advantage of this approach is that you can specify a different parser class for control and test XML and change the current parser class at any time in your tests, should you need to make assertions about the compatibility of different parsers. In the previous example id attributes were used to identify the list item values that needed to be testable, however class attributes or span and div tags can also be used to identify specific content for testing.
It allows an XML comparison to be made that ignores differences in the values of text and attribute nodes, for example when comparing a skeleton or outline piece of XML to some generated XML. This is expected to be the last XMLUnit release compatible with.
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The binary in this release has been compiled against NUnit 2. The test below demonstrates the use of a custom ElementQualifier:. In general, this is true when there are programmatic relationships between nodes xmluint can be more easily tested iteratively.
The getResultString and getResultDocument methods of the Transform class can be used to access the result of the XSLT transformation programmatically if required, for example as below:.
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Comparing Pieces of XML 3. Changes from XMLUnit 1. This first section contains a tour through XMLUnit's features, the next sections will cover them in more detail.
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