git - Using org.xmlunit.diff.NodeFilters -

i using xmlunit in junit compare results of tests. have problem wherein there element in xml gets current timestamp tests run , when compared expected output, results not match.

to overcome this, read using org.xmlunit.diff.nodefilters, not have examples on how implement this. code snippet have below,

final org.xmlunit.diff.diff documentdiff = diffbuilder             .compare(sourcexp)                               .withtest(sourceactual)             .ignorecomments()             .ignorewhitespace()                              //.withnodefilter(node.element_node)             .build();      return documentdiff.hasdifferences(); 

my problem is, how implement nodefilter? parameter should passed , should passed? there no samples on this. nodefilter method gets predicate in parameter. predicate mean?

predicate functional interface single test method - in case of nodefilter receives dom node argument , returns boolean. javadoc of predicate

an implementation of predicate<node> can used filter nodes difference engine , nodes predicate returns true compared. javadoc of setnodefilter, user-guide

assuming element containing timestamp called timestamp you'd use like

.withnodefilter(new predicate<node>() {     @override     public boolean test(node n) {         return !(n instanceof element &&             "timestamp".equals(nodes.getqname(n).getlocalpart()));     } }) 

or using lambdas

.withnodefilter(n -> !(n instanceof element &&     "timestamp".equals(nodes.getqname(n).getlocalpart()))) 

this uses xmlunit's org.xmlunit.util.nodes element name more easily.