@Test
public void testOpenBombDoesNotOpenNeighbors() {

    openAt(1, 0, itsGame2by2);
    assertEquals(true, itsGame2by2.getBoard().getField(1, 0).isOpen());
    assertEquals(true, itsGame2by2.getBoard().getField(1, 0).isExploded());
    assertEquals(false, itsGame2by2.getBoard().getField(0, 0).isOpen());
    assertEquals(false, itsGame2by2.getBoard().getField(0, 1).isOpen());
    assertEquals(false, itsGame2by2.getBoard().getField(1, 1).isOpen());
}