Software As She’s Developed

Updated May 18, 2005 Shrunk width due to narrow WP style (it’s like coding in 30 columns per line)

package assertion;

import junit.framework.TestCase;

import java.lang.reflect.Method;
import java.lang.reflect.Array;

public class ReflectionTest extends TestCase {

    private class Shop {
        public void order(String ... productIds) {}
    }

    public void testReflectingOnVarargsIs-
                            EquivalentToReflectingOn-
                            AnyArray()
                   throws NoSuchMethodException {

        Method goodMethod = Shop.class.
                  getMethod("order",
                  Array.newInstance(String.class,0).getClass());
        assertNotNull(goodMethod);

        try {
            Method badMethod = Shop.class.getMethod("order");
            fail();
        } catch (NoSuchMethodException e) {}

        try {
            Method badMethod = Shop.class.getMethod("order", String.class);
            fail();
        } catch (NoSuchMethodException e) {}

    }

}