@Test
public void testGetters() {
assertEquals(SURFACE.getName(), NAME1);
assertEquals(SURFACE.getFunction(), F1);
assertEquals(SURFACE.getZValue(1., 2.), F1.evaluate(1., 2.), 0);
assertEquals(SURFACE.getZValue(DoublesPair.of(1., 4.)), F1.evaluate(1., 4.), 0);
}
@Test(expectedExceptions = IllegalArgumentException.class)
public void testNullPair() {
SURFACE.getZValue(null);
}