@Test
public void testViewPart() {

  Vector part = test.viewPart(1, 2);
  assertEquals("part size", 2, part.getNumNondefaultElements());
  for (int i = 0; i < part.size(); i++) {
    assertEquals("part[" + i + ']', test.get(i+1), part.get(i), EPSILON);
  }
}