frameworks/projects/framework/tests/mx/collections/ArrayCollection_AddRemoveObjects_Tests.as

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package mx.collections {
    import org.flexunit.asserts.*;

    public class ArrayCollection_AddRemoveObjects_Tests
	{	
		private var _sut:ArrayCollection;
		
		protected var players:Array = [
			{team:"TeamOne",jerseyNumber:80,lastName:"PlayerA",firstName:"Aa"},
			{team:"TeamTwo",jerseyNumber:7, lastName:"PlayerB",firstName:"Bb"},
			{team:"TeamOne",jerseyNumber:12, lastName:"PlayerC",firstName:"Cc"},
			{team:"TeamOne",jerseyNumber:21,lastName:"PlayerD",firstName:"Dd"},
			{team:"TeamThree",jerseyNumber:34, lastName:"PlayerE",firstName:"Ee"},
			{team:"TeamOne",jerseyNumber:12, lastName:"PlayerF",firstName:"Ff"},
			{team:"TeamTwo",jerseyNumber:7, lastName:"PlayerG",firstName:"Gg"}
		];
		
		[Before]
		public function setUp():void
		{
			_sut = new ArrayCollection();
		}
		
		[After]
		public function tearDown():void
		{
			_sut = null;
		}
		
		[Test]
		public function empty():void
		{
			assertEquals(_sut.length, 0);
		}
		
		[Test]
		public function addObjects():void
		{
			_sut = new ArrayCollection(players);
			assertEquals("Length is not seven",  7, _sut.length);
			assertEquals("First element not correct",  players[0], _sut[0]);
			assertEquals("Second element not correct",  players[1], _sut[1]);
			assertEquals("Third element not correct",  players[2], _sut[2]);
			assertEquals("Fouth element not correct",  players[3], _sut[3]);
			assertEquals("Fifth element not correct",  players[4], _sut[4]);
			assertEquals("Sixth element not correct",  players[5], _sut[5]);
			assertEquals("Seventh element not correct",  players[6], _sut[6]);
		}
		
		[Test]
		public function addDuplicate():void
		{
			addObjects();
			_sut.addItem(players[0]);
			assertEquals("Length is not eight",  8, _sut.length);
			assertEquals("First element not correct",  players[0], _sut[0]);
			assertEquals("Second element not correct",  players[1], _sut[1]);
			assertEquals("Third element not correct",  players[2], _sut[2]);
			assertEquals("Fouth element not correct",  players[3], _sut[3]);
			assertEquals("Fifth element not correct",  players[4], _sut[4]);
			assertEquals("Sixth element not correct",  players[5], _sut[5]);
			assertEquals("Seventh element not correct",  players[6], _sut[6]);
			assertEquals("Eighth element not correct",  players[0], _sut[7]);
		}
		
		[Test]
		public function removeDuplicate():void
		{
            //given
			addObjects();
            var firstPlayer:* = players[0];
            var secondPlayer:* = players[1];
            var thirdPlayer:* = players[2];
            var fourthPlayer:* = players[3];
            var fifthPlayer:* = players[4];
            var sixthPlayer:* = players[5];
            var seventhPlayer:* = players[6];

            //when
			_sut.addItem(players[0]);
            _sut.removeItemAt(0);
            //then
			assertEquals("Length is not seven",  7, _sut.length);
            assertEquals("First element not correct",  secondPlayer, _sut[0]);
            assertEquals("Second element not correct",  thirdPlayer, _sut[1]);
            assertEquals("Third element not correct",  fourthPlayer, _sut[2]);
            assertEquals("Fourth element not correct",  fifthPlayer, _sut[3]);
            assertEquals("Fifth element not correct",  sixthPlayer, _sut[4]);
            assertEquals("Sixth element not correct",  seventhPlayer, _sut[5]);
            assertEquals("Seventh element not correct",  firstPlayer, _sut[6]);
		}
		
		[Test]
		public function removeAllObjects():void
		{
			addObjects();
			_sut.removeAll();
			assertEquals("Length is not zero",  0, _sut.length);
		}
		
		[Test]
		public function removeFirstObjects():void
		{
            //given
			addObjects();
            var secondPlayer:Object = players[1];

            //when
			_sut.removeItemAt(0);

            //then
            assertEquals("First element not correct", secondPlayer, _sut[0]);
			assertEquals("Length is not six", 6, _sut.length);

            //when
			_sut.removeItemAt(0);
            //then
			assertEquals("Length is not five",  5, _sut.length);

            //when
			_sut.removeItemAt(0);
            //then
			assertEquals("Length is not four",  4, _sut.length);

            //when
			_sut.removeItemAt(0);
            //then
			assertEquals("Length is not three",  3, _sut.length);

            //when
			_sut.removeItemAt(0);
            //then
			assertEquals("Length is not two",  2, _sut.length);

            //when
			_sut.removeItemAt(0);
            //then
			assertEquals("Length is not one",  1, _sut.length);

            //when
			_sut.removeItemAt(0);
            //then
			assertEquals("Length is not zero",  0, _sut.length);
		}
		
		[Test]
		public function removeLastNumbers():void
		{
			addObjects();
			_sut.removeItemAt(6);
			assertEquals("First element not correct",  players[0], _sut[0]);
			assertEquals("Length is not six",  6, _sut.length);
			_sut.removeItemAt(0);
			assertEquals("Length is not five",  5, _sut.length);
			_sut.removeItemAt(0);
			assertEquals("Length is not four",  4, _sut.length);
			_sut.removeItemAt(0);
			assertEquals("Length is not three",  3, _sut.length);
			_sut.removeItemAt(0);
			assertEquals("Length is not two",  2, _sut.length);
			_sut.removeItemAt(0);
			assertEquals("Length is not one",  1, _sut.length);
			_sut.removeItemAt(0);
			assertEquals("Length is not zero",  0, _sut.length);
		}
		
		[Test]
		public function removeItemByIndex():void
		{
			//given
			addObjects();
            const secondPlayer:Object = players[1];
            const thirdPlayer:Object = players[2];
            const fourthPlayer:Object = players[3];

            //when
			_sut.removeItemAt(_sut.getItemIndex(players[0]));

            //then
            assertEquals("First element incorrect", secondPlayer, _sut[0]);
			assertEquals("Length is not six", 6, _sut.length);

            //when
			_sut.removeItemAt(_sut.getItemIndex(thirdPlayer));

            //then
			assertEquals("First element not correct", secondPlayer, _sut[0]);
			assertEquals("Second element not correct", fourthPlayer, _sut[1]);
			assertEquals("Length is not four", 5, _sut.length);
		}
		
		[Test]
		public function outOfRange():void
		{
			addObjects();
			try {
				_sut.removeItemAt(-1);
			}
			catch (error:Error)
			{
				assertTrue("Error not range error", error is RangeError);
			}
			assertEquals("Length is not seven",  7, _sut.length);
			try {
				_sut.removeItemAt(10);
			}
			catch (error:Error)
			{
				assertTrue("Error not range error", error is RangeError);
			}
			assertEquals("Length is not seven",  7, _sut.length);
		}
		
		[Test]
		public function swapItemsTwoThenOne():void
		{
            //given
			addObjects();
			var item1:Object = _sut.getItemAt(0);
			var item2:Object = _sut.getItemAt(1);
            var firstPlayer:* = players[0];
            var secondPlayer:* = players[1];

            //when
			_sut.setItemAt(item2,0);
			_sut.setItemAt(item1,1);

            //then
			assertEquals("Length is not seven",  7, _sut.length);
            assertEquals("First element not correct",  secondPlayer, _sut[0]);
            assertEquals("Second element not correct",  firstPlayer, _sut[1]);
		}
		
		[Test]
		public function swapItemsOneThenTwo():void
		{
            //given
			addObjects();
			var item1:Object = _sut.getItemAt(0);
			var item2:Object = _sut.getItemAt(1);
            var secondPlayer:Object = players[1];
            var firstPlayer:Object = players[0];

            //when
			_sut.setItemAt(item1,1);
			_sut.setItemAt(item2,0);

            //then
			assertEquals("Length is not seven",  7, _sut.length);
            assertEquals("First element not correct",  secondPlayer, _sut[0]);
            assertEquals("Second element not correct",  firstPlayer, _sut[1]);

		}
		
	}
}