@Test
  public void promosing_1_conflict_test() {

    queen.state.set(0, 0);

    List<Integer> conflicts = Arrays.asList(0, 1);
    for (int i = 0; i < conflicts.size(); i++) {

      queen.state.set(1, i);
      boolean actual = queen.promising(1);
      assertThat(actual, is(false));
    }

    for (int i = 0; i < queen.state.size(); i++) {
      queen.state.set(0, 0);
    }

    List<Integer> oks = Arrays.asList(2, 3, 4, 5, 6, 7);
    for (int i = 0; i < oks.size(); i++) {

      queen.state.set(1, oks.get(i));
      boolean actual = queen.promising(1);
      assertThat(actual, is(true));
    }
  }
  @Test
  public void promosing_2_conflict_test1() {

    queen.state.set(0, 0);
    queen.state.set(1, 0);

    boolean actual = queen.promising(1);
    assertThat(actual, is(false));
  }
  @Test
  public void promosing_0_with_1_test() {

    for (int i = 0; i < queen.state.size(); i++) {
      queen.state.set(0, i);
      boolean actual = queen.promising(0);
      assertThat(actual, is(true));
    }
  }
  @Test
  public void promosing_2_conflict_test4() {

    queen.state.set(0, 0);
    queen.state.set(1, 2);

    queen.state.set(2, 4);

    boolean actual = queen.promising(2);
    assertThat(actual, is(true));
  }
  @Test
  public void promosing_0_test() {

    boolean actual = queen.promising(0);
    assertThat(actual, is(true));
  }