CoverMeSimple.java

package de.kopis.katas;

public class CoverMeSimple {
    public int simple(int x, int y) {
        int z = x;

        if(y > x)
            z = y;
        z *= 2;

        return z;
    }
}

CoverMeSimpleTest.java

package de.kopis.katas;

import static org.junit.Assert.assertEquals;

import mockit.integration.junit4.JMockit;

import org.junit.Test;
import org.junit.runner.RunWith;

@RunWith(JMockit.class)
public class CoverMeSimpleTest {
    @Test
    public void testSimple() {
        CoverMeSimple cm = new CoverMeSimple();
        int result = cm.simple(1, 2);
        assertEquals(4, result);
    }
}