@Test
public void testGraphResolution() {

    final Collection<Node<?>> resolved = seed().resolve();
    final ArrayList<Class<?>> classes = new ArrayList<>(resolved.size());
    for (Node<?> node : resolved) {
        classes.add(node.getRefClass());
    }
    assertArrayEquals(new Class<?>[]{BigDecimal.class, Float.class, Long.class, Integer.class}, classes.toArray());
}