@Test
public void testCreate() {

    assertTrue(DayClustering.create(new int[]{0,2,2,2,0,0,1})!= null);
    assertTrue(DayClustering.create(new int[]{0,2,2,2,0,0,0})== null);
    assertTrue(DayClustering.create(new int[]{0,2,2,2,2,2,1})!= null);
    assertTrue(DayClustering.create(new int[]{0,1,2,3,4,5,6})!= null);
}