Examples of java.util.ListIterator.previousIndex()

java.util.ListIterator.previousIndex()
Returns the index of the element that would be returned by a subsequent call to previous. (Returns -1 if the list iterator is at the beginning of the list.) @return the index of the element that would be returned by a subsequentcall to previous, or -1 if list iterator is at beginning of list.

        assertEquals(0,it.previousIndex());
        assertEquals(1,it.nextIndex());
        assertEquals("1",it.previous());
        assertTrue(it.hasNext());
        assertTrue(!it.hasPrevious());
        assertEquals(-1,it.previousIndex());
        assertEquals(0,it.nextIndex());
    }


    public void testListIteratorSet() {
        list.add("1");

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    public void testIterator() {
        ListIterator iter = (ListIterator) makeObject();
        assertTrue( "Iterator should have next item", iter.hasNext() );
        assertTrue( "Iterator should have no previous item", !iter.hasPrevious() );
        assertEquals( "Iteration next index", 0, iter.nextIndex() );
        assertEquals( "Iteration previous index", -1, iter.previousIndex() );
        
        Object iterValue = iter.next();
        assertEquals( "Iteration value is correct", testValue, iterValue );
        
        assertTrue( "Iterator should have no next item", !iter.hasNext() );

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        assertEquals( "Iteration value is correct", testValue, iterValue );
        
        assertTrue( "Iterator should have no next item", !iter.hasNext() );
        assertTrue( "Iterator should have previous item", iter.hasPrevious() );
        assertEquals( "Iteration next index", 1, iter.nextIndex() );
        assertEquals( "Iteration previous index", 0, iter.previousIndex() );


        iterValue = iter.previous();
        assertEquals( "Iteration value is correct", testValue, iterValue );
        
        assertTrue( "Iterator should have next item", iter.hasNext() );

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        assertEquals( "Iteration value is correct", testValue, iterValue );
        
        assertTrue( "Iterator should have next item", iter.hasNext() );
        assertTrue( "Iterator should have no previous item", !iter.hasPrevious() );
        assertEquals( "Iteration next index", 0, iter.nextIndex() );
        assertEquals( "Iteration previous index", -1, iter.previousIndex() );


        iterValue = iter.next();
        assertEquals( "Iteration value is correct", testValue, iterValue );
        
        assertTrue( "Iterator should have no next item", !iter.hasNext() );

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        assertEquals( "Iteration value is correct", testValue, iterValue );
        
        assertTrue( "Iterator should have no next item", !iter.hasNext() );
        assertTrue( "Iterator should have previous item", iter.hasPrevious() );
        assertEquals( "Iteration next index", 1, iter.nextIndex() );
        assertEquals( "Iteration previous index", 0, iter.previousIndex() );


      try {
          iter.next();
      } catch (Exception e) {
        assertTrue("NoSuchElementException must be thrown",

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        list.add("4");
        list.add("5");
        ListIterator it = list.listIterator();
        assertTrue(it.hasNext());
        assertTrue(!it.hasPrevious());
        assertEquals(-1,it.previousIndex());
        assertEquals(0,it.nextIndex());
        assertEquals("1",it.next());
        assertTrue(it.hasNext());
        assertTrue(it.hasPrevious());
        assertEquals(0,it.previousIndex());

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        assertEquals(-1,it.previousIndex());
        assertEquals(0,it.nextIndex());
        assertEquals("1",it.next());
        assertTrue(it.hasNext());
        assertTrue(it.hasPrevious());
        assertEquals(0,it.previousIndex());
        assertEquals(1,it.nextIndex());
        assertEquals("1",it.previous());
        assertTrue(it.hasNext());
        assertTrue(!it.hasPrevious());
        assertEquals(-1,it.previousIndex());

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        assertEquals(0,it.previousIndex());
        assertEquals(1,it.nextIndex());
        assertEquals("1",it.previous());
        assertTrue(it.hasNext());
        assertTrue(!it.hasPrevious());
        assertEquals(-1,it.previousIndex());
        assertEquals(0,it.nextIndex());
        assertEquals("1",it.next());
        assertTrue(it.hasNext());
        assertTrue(it.hasPrevious());
        assertEquals(0,it.previousIndex());

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        assertEquals(-1,it.previousIndex());
        assertEquals(0,it.nextIndex());
        assertEquals("1",it.next());
        assertTrue(it.hasNext());
        assertTrue(it.hasPrevious());
        assertEquals(0,it.previousIndex());
        assertEquals(1,it.nextIndex());
        assertEquals("2",it.next());
        assertTrue(it.hasNext());
        assertTrue(it.hasPrevious());
        assertEquals(1,it.previousIndex());

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        assertEquals(0,it.previousIndex());
        assertEquals(1,it.nextIndex());
        assertEquals("2",it.next());
        assertTrue(it.hasNext());
        assertTrue(it.hasPrevious());
        assertEquals(1,it.previousIndex());
        assertEquals(2,it.nextIndex());
        assertEquals("2",it.previous());
        assertTrue(it.hasNext());
        assertTrue(it.hasPrevious());
        assertEquals(0,it.previousIndex());

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