How to use

previous

method

in

com.nhaarman.sqlitebuilder.SqlPart

@Override
public boolean hasNext() {
 return mLastReturned == null || mLastReturned.previous() != null;
}

@Override
public SqlPart next() {
 if (mLastReturned == null) {
  mLastReturned = mFirst;
  return mFirst;
 }
 SqlPart next = mLastReturned.previous();
 if (next == null) {
  throw new NoSuchElementException("No previous SqlPart.");
 }
 mLastReturned = next;
 return mLastReturned;
}

 @Test
 public void nextWhenThereIsANext_returnsProperItem() {
  /* Given */
  SqlPart first = mock(SqlPart.class);
  SqlPart second = mock(SqlPart.class);
  when(first.previous()).thenReturn(second);

  SqlPartIterator iterator = new SqlPartIterator(first);
  iterator.next();

  /* When */
  SqlPart result = iterator.next();

  /* Then */
  assertThat(result, is(second));
 }
}