JUnit Theories usage

output

bb+1
bb+2
bb+100
ccc+1
ccc+2
ccc+100
a, a
a, bb
a, ccc
bb, a
bb, bb
bb, ccc
ccc, a
ccc, bb
ccc, ccc

TTest.java

import static org.junit.Assume.assumeTrue;

import org.junit.experimental.theories.DataPoint;
import org.junit.experimental.theories.DataPoints;
import org.junit.experimental.theories.Theories;
import org.junit.experimental.theories.Theory;
import org.junit.runner.RunWith;

/**
 * See http://blog.schauderhaft.de/2010/01/31/new-feature-of-junit-theories/
 * and http://blog.schauderhaft.de/2010/02/07/junit-theories/
 * for more examples on theories
 */
@RunWith(Theories.class)
public class TTest
{
    @DataPoints
    public static String[] strings = {"a", "bb", "ccc"};

    @DataPoints
    public static Integer[] integers = {1, 2};

    @DataPoint
    public static Integer unexpected = 100;

    @Theory
    public void allVariations(String s, Integer i) {
        assumeTrue(s.length() > 1);
        System.out.println(s + "+" + i);
    }

    @Theory
    public void onlyStrings(String a, String b) {
        System.out.println(a + ", " + b);
    }
}