final List resources = project.getBuild().getResources();
final LinkedList filterList = new LinkedList();
assertNotNull( mojo );
project.addFile( "file4.properties", "current working directory=${filter.token}" );
project.addFile( "filter.properties", "filter.token=${pom-property}" );
project.setResourceFiltering( 0, true );
project.addProperty( "pom-property", "foobar" );
project.setupBuildEnvironment();
filterList.add( project.getResourcesDirectory() + "filter.properties" );