LinearInterpolator1D extends Interpolator1D { @Override public Interpolator1DDataBundle getDataBundleFromSortedArrays(final double[] x, final double[] y) { return new ArrayInterpolator1DDataBundle(x, y, true); }  @Override Double interpolate(final Interpolator1DDataBundle model, final Double value); @Override double firstDerivative(final Interpolator1DDataBundle model, final Double value); @Override double[] getNodeSensitivitiesForValue(final Interpolator1DDataBundle data, final Double value); @Override Interpolator1DDataBundle getDataBundle(final double[] x, final double[] y); @Override Interpolator1DDataBundle getDataBundleFromSortedArrays(final double[] x, final double[] y);  }
@Test public void testDataBundleType2() { assertEquals(INTERPOLATOR.getDataBundleFromSortedArrays(new double[] {1, 2, 3}, new double[] {1, 2, 3}).getClass(), ArrayInterpolator1DDataBundle.class); }