public void validate_output_wildcard() {
FlowDescriptionDriver flow = new FlowDescriptionDriver();
In<Line1> in = flow.createIn("in1", new Input(format, "input", "input.txt"));
Out<Line1> out = flow.createOut("out1", new Output(format, "output", "*.txt"));
FlowDescription desc = new IdentityFlow<Line1>(in, out);
JobflowInfo info = compile(flow, desc);
assertThat(info, is(not(nullValue())));
}