@Test
public void natural_order_float_value() {

  ExprValueOrdering ordering = ExprValueOrdering.natural();
  assertEquals(1, ordering.compare(floatValue(5f), floatValue(4f)));
  assertEquals(0, ordering.compare(floatValue(5f), floatValue(5f)));
  assertEquals(-1, ordering.compare(floatValue(4f), floatValue(5f)));
}