/** Test of interpolate method, of class NaturalSpline. */
@Test
public void testInterpolate5() {
double[] xx = new double[] {1, 11, 20, 30, 40};
double[] yy = new double[] {1, 2, 3, 4, 3};
NaturalSpline spline = NaturalSpline.interpolate(xx, yy);
System.out.println(spline.toString());
for (double x = xx[0]; x <= xx[xx.length - 1]; x++) {
double y = spline.yAtX(x);
System.out.println("x=" + x + " y=" + (float) y);
}
}
/** Test of interpolate method, of class NaturalSpline. */
@Test
public void testInterpolateDiff() {
double[] xx = new double[] {};
double[] yy = new double[] {1};
try {
NaturalSpline spline = NaturalSpline.interpolate(xx, yy);
fail("Exception should be raised when no points are defined");
System.out.println(spline.toString());
} catch (IllegalArgumentException expected) {
checkException(expected);
}
}