@Test
public void test(){

    int[] src1 = new int[]{0, 2, 2, 6, 8, 8, 11};
    int[] src2 = new int[]{ 0 ,3 ,6 ,7 ,10 ,11     };
    int[] dest = new int[src1.length + src2.length];

    challenge.mergeSortedArrays(src1, src2, dest);

    assertThat(dest).containsExactly(0, 0, 2, 2, 3, 6, 6, 7, 8, 8, 10, 11, 11);
}