args4j test in Groovy

testargs4j.groovy

@Grab(group='args4j', module='args4j', version='2.0.25') 
import org.kohsuke.args4j.*
import org.kohsuke.args4j.spi.*
import static org.kohsuke.args4j.ExampleMode.ALL


public class Sample {
    private boolean recursive
    
//    @Option(name="-r", usage="Recursive", handler=BooleanOptionHandler.class)
    @Option(name = "--recursive", aliases=["-r"], usage="Recursive")
    public void setRecursive(boolean val) {
        recursive = val
    }
    
    @Option(name = "--msg-file", aliases = ['-m'], usage = "Message File(s) <msg-file>",
        required = false, metaVar = "METAFILE")
    private List<String> msgFiles_;
        
    @Argument(required = false, multiValued = true, metaVar = "FILE")
    private List<String> files_;
}

def sample = new Sample()
CmdLineParser parser = new CmdLineParser(sample);

//parser.parseArgument([])

//parser.parseArgument(["-r", "false"])
//println sample.recursive

//parser.parseArgument(["--msg-file", "a.txt", "--msg-file", "b.txt", "--msg-file", "c.txt"])
parser.parseArgument(["a.txt", "b.txt", "c.txt", "--msg-file", "mf.txt"])
//println sample.files_
//println sample.msgFiles_

def out = new StringWriter()

out.print("Usage: my-command")
parser.printSingleLineUsage(out, null)
out.println()
out.println("My command to do things")
out.println()
parser.printUsage(out, null)

System.err.println(out)

//parser.printExample ALL