public DebtRatingGrid getDebtRatingGrid() {
    return ratingGrid;
  }
@Test
  public void load_rating_grid() {
    settings.setProperty(CoreProperties.RATING_GRID, "1,3.4,8,50");
    RatingSettings configurationLoader = new RatingSettings(settings.asConfig());

    double[] grid = configurationLoader.getDebtRatingGrid().getGridValues();
    assertThat(grid).hasSize(4);
    assertThat(grid[0]).isEqualTo(1.0);
    assertThat(grid[1]).isEqualTo(3.4);
    assertThat(grid[2]).isEqualTo(8.0);
    assertThat(grid[3]).isEqualTo(50.0);
  }