@Test public void recBuffer02()
{

    RecordBuffer rb = make(4, 4) ;
    int idx = -1 ;
    idx = find(rb, 6) ;
    assertEquals(2, idx) ;
    idx = find(rb, 8) ;
    
    assertEquals(3, idx) ;
    idx = find(rb, 4) ;
    assertEquals(1, idx) ;
    idx = find(rb, 2) ;
    assertEquals(0, idx) ;
    idx = find(rb, 3) ;
    assertEquals(-2, idx) ;
    idx = find(rb, 0) ;
    assertEquals(-1, idx) ;
    idx = find(rb, 10) ;
    assertEquals(-5, idx) ;
}