public void source_multisource() throws Exception {
set("testing1", "Hello1, world!");
set("testing2", "Hello2, world!");
set("testing3", "Hello3, world!");
HadoopFsMirror resource = new HadoopFsMirror(conf, profile(), new ParameterList());
try {
ProcessScript<Text> process = source("target", "testing1", "testing2", "testing3");
resource.prepare(script(process));
SourceDriver<Text> driver = resource.createSource(process);