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import java.io.File;
import junit.framework.TestCase;
import org.kohsuke.args4j.CmdLineException;
import org.kohsuke.args4j.CmdLineParser;
import org.kohsuke.args4j.ExampleMode;
import org.kohsuke.args4j.Option;
/**
* Tests {@link CmdLineParser#printExample(ExampleMode)}
*
* @author Kohsuke Kawaguchi
*/
public class ExampleTest extends TestCase {
@Option(required = true, name = "-a", usage = "this is X")
int x;
@Option(name = "-b", usage = "this is Y", metaVar = "<output>")
File y;
public void testPrintExampleModeAll() {
String s = new CmdLineParser(this).printExample(ExampleMode.ALL);
assertEquals(" -a N -b <output>", s);
}
public void testPrintExampleModeRequired() {
String s = new CmdLineParser(this).printExample(ExampleMode.REQUIRED);
assertEquals(" -a N", s);
}
public void testParsingAllArgs() throws Exception {
CmdLineParser parser = new CmdLineParser(this);
parser.parseArgument("-a", "1", "-b", "foo");
assertEquals(1, x);
assertEquals(new File("foo"), y);
}
public void testParsingOnlyRequiredArgs() throws Exception {
CmdLineParser parser = new CmdLineParser(this);
parser.parseArgument("-a", "1");
assertEquals(1, x);
assertNull(y);
}
public void testParsingMissingRequiredArgs() throws Exception {
CmdLineParser parser = new CmdLineParser(this);
try {
parser.parseArgument("-b", "foo");
fail("Should have thrown an exception because"
+ " required arg 'a' is missing");
} catch (CmdLineException e) {
assertEquals("Option \"-a\" is required", e.getMessage());
}
}
}
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