<?php

class ListItem {
    public $data='data';
}

/**
 * @package System.Collections
 */
class TListTest extends PHPUnit_Framework_TestCase {

    protected $list;
    protected $item1, $item2, $item3, $item4;

	public function setUp() {
	    $this->list=new TList;
	    $this->item1=new ListItem;
	    $this->item2=new ListItem;
	    $this->item3=new ListItem;
	    $this->item4=new ListItem;
	    $this->list->add($this->item1);
	    $this->list->add($this->item2);
	}

	public function tearDown() {
		$this->list=null;
		$this->item1=null;
		$this->item2=null;
		$this->item3=null;
		$this->item4=null;
	}

	public function testConstruct() {
		$a=array(1,2,3);
		$list=new TList($a);
		$this->assertEquals(3,$list->getCount());
		$list2=new TList($this->list);
		$this->assertEquals(2,$list2->getCount());
	}

	public function testGetReadOnly() {
		$list = new TList(null, true);
		self::assertEquals(true, $list->getReadOnly(), 'List is not read-only');
		$list = new TList(null, false);
		self::assertEquals(false, $list->getReadOnly(), 'List is read-only');
	}

	public function testGetCount() {
		$this->assertEquals(2,$this->list->getCount());
		$this->assertEquals(2,$this->list->Count);
	}

	public function testItemAt() {
		$this->assertTrue($this->list->itemAt(0) === $this->item1);
		$this->assertTrue($this->list->itemAt(1) === $this->item2);
		try {
			$this->list->itemAt(2);
			$this->fail('exception not raised when adding item at an out-of-range index');
		} catch(TInvalidDataValueException $e) {
		}
	}

	public function testAdd() {
		$this->assertEquals(2,$this->list->add(null));
		$this->assertEquals(3,$this->list->add($this->item3));
		$this->assertEquals(4,$this->list->getCount());
		$this->assertEquals(3,$this->list->indexOf($this->item3));
	}

	public function testCanNotAddWhenReadOnly() {
		$list = new TList(array(), true);
		try {
			$list->add(1);
			self::fail('An expected TInvalidOperationException was not raised');
		} catch(TInvalidOperationException $e) {
		}
	}

	public function testInsertAt() {
		$this->assertNull($this->list->insertAt(0,$this->item3));
		$this->assertEquals(3,$this->list->getCount());
		$this->assertEquals(2,$this->list->indexOf($this->item2));
		$this->assertEquals(0,$this->list->indexOf($this->item3));
		$this->assertEquals(1,$this->list->indexOf($this->item1));
		try {
			$this->list->insertAt(4,$this->item3);
			$this->fail('exception not raised when adding item at an out-of-range index');
		} catch(TInvalidDataValueException $e) {
		}
	}

	public function testCanNotInsertAtWhenReadOnly() {
		$list = new TList(array(), true);
		try {
			$list->insertAt(1, 2);
			self::fail('An expected TInvalidOperationException was not raised');
		} catch(TInvalidOperationException $e) {
		}
		try {
			$list->insertAt(0, 2);
			self::fail('An expected TInvalidOperationException was not raised');
		} catch(TInvalidOperationException $e) {
		}
	}

	public function testInsertBefore() {
		try {
			$this->list->insertBefore($this->item4,$this->item3);
			$this->fail('exception not raised when adding item before a non-existant base item');
		} catch(TInvalidDataValueException $e) {
		}
		$this->assertEquals(2,$this->list->getCount());
		$this->assertEquals(0,$this->list->insertBefore($this->item1,$this->item3));
		$this->assertEquals(3,$this->list->getCount());
		$this->assertEquals(0,$this->list->indexOf($this->item3));
		$this->assertEquals(1,$this->list->indexOf($this->item1));
		$this->assertEquals(2,$this->list->indexOf($this->item2));
	}

	public function testCanNotInsertBeforeWhenReadOnly() {
		$list = new TList(array(5), true);
		try {
			$list->insertBefore(5, 6);
			self::fail('An expected TInvalidOperationException was not raised');
		} catch(TInvalidOperationException $e) {
		}
		try {
			$list->insertBefore(8, 6);
			self::fail('An expected TInvalidOperationException was not raised');
		} catch(TInvalidOperationException $e) {
		}
	}

	public function testInsertAfter() {
		try {
			$this->list->insertAfter($this->item4,$this->item3);
			$this->fail('exception not raised when adding item after a non-existant base item');
		} catch(TInvalidDataValueException $e) {
		}
		$this->assertEquals(2,$this->list->getCount());
		$this->assertEquals(2,$this->list->insertAfter($this->item2,$this->item3));
		$this->assertEquals(3,$this->list->getCount());
		$this->assertEquals(0,$this->list->indexOf($this->item1));
		$this->assertEquals(1,$this->list->indexOf($this->item2));
		$this->assertEquals(2,$this->list->indexOf($this->item3));
	}

	public function testCanNotInsertAfterWhenReadOnly() {
		$list = new TList(array(5), true);
		try {
			$list->insertAfter(5, 6);
			self::fail('An expected TInvalidOperationException was not raised');
		} catch(TInvalidOperationException $e) {
		}
		try {
			$list->insertAfter(8, 6);
			self::fail('An expected TInvalidOperationException was not raised');
		} catch(TInvalidOperationException $e) {
		}
	}

	public function testRemove() {
		$this->assertEquals(0,$this->list->remove($this->item1));
		$this->assertEquals(1,$this->list->getCount());
		$this->assertEquals(-1,$this->list->indexOf($this->item1));
		$this->assertEquals(0,$this->list->indexOf($this->item2));
		try {
			$this->list->remove($this->item1);
			$this->fail('exception not raised when removing nonexisting item');
		} catch(Exception $e) {
		}
	}

	public function testCanNotRemoveWhenReadOnly() {
		$list = new TList(array(1, 2, 3), true);
		try {
			$list->remove(2);
			self::fail('An expected TInvalidOperationException was not raised');
		} catch(TInvalidOperationException $e) {
		}

		$list = new TList(array(1, 2, 3), true);
		try {
			$list->remove(10);
			self::fail('An expected TInvalidOperationException was not raised');
		} catch(TInvalidOperationException $e) {
		}
	}

	public function testRemoveAt() {
		$this->list->add($this->item3);
		$this->assertEquals($this->item2, $this->list->removeAt(1));
		$this->assertEquals(-1,$this->list->indexOf($this->item2));
		$this->assertEquals(1,$this->list->indexOf($this->item3));
		$this->assertEquals(0,$this->list->indexOf($this->item1));
		try {
			$this->list->removeAt(2);
			$this->fail('exception not raised when removing item with invalid index');
		} catch(TInvalidDataValueException $e) {
		}
	}

	public function testCanNotRemoveAtWhenReadOnly() {
		$list = new TList(array(1, 2, 3), true);
		try {
			$list->removeAt(2);
			self::fail('An expected TInvalidOperationException was not raised');
		} catch(TInvalidOperationException $e) {
		}

		$list = new TList(array(1, 2, 3), true);
		try {
			$list->removeAt(10);
			self::fail('An expected TInvalidOperationException was not raised');
		} catch(TInvalidOperationException $e) {
		}
	}

	public function testClear() {
		$this->list->clear();
		$this->assertEquals(0,$this->list->getCount());
		$this->assertEquals(-1,$this->list->indexOf($this->item1));
		$this->assertEquals(-1,$this->list->indexOf($this->item2));
	}

	public function testCanNotClearWhenReadOnly() {
		$list = new TList(array(1, 2, 3), true);
		try {
			$list->clear();
		} catch(TInvalidOperationException $e) {
		return;
		}
		self::fail('An expected TInvalidOperationException was not raised');
	}

	public function testContains() {
		$this->assertTrue($this->list->contains($this->item1));
		$this->assertTrue($this->list->contains($this->item2));
		$this->assertFalse($this->list->contains($this->item3));
	}

	public function testIndexOf() {
		$this->assertEquals(0,$this->list->indexOf($this->item1));
		$this->assertEquals(1,$this->list->indexOf($this->item2));
		$this->assertEquals(-1,$this->list->indexOf($this->item3));
	}

	public function testCopyFrom() {
		$array=array($this->item3,$this->item1);
		$this->list->copyFrom($array);
		$this->assertTrue(count($array)==2 && $this->list[0]===$this->item3 && $this->list[1]===$this->item1);
		try {
			$this->list->copyFrom($this);
			$this->fail('exception not raised when copying from non-traversable object');
		} catch(TInvalidDataTypeException $e) {
		}
	}

	public function testMergeWith() {
		$array=array($this->item3,$this->item1);
		$this->list->mergeWith($array);
		$this->assertTrue($this->list->getCount()==4 && $this->list[0]===$this->item1 && $this->list[3]===$this->item1);
		try {
			$this->list->mergeWith($this);
			$this->fail('exception not raised when copying from non-traversable object');
		} catch(TInvalidDataTypeException $e) {
		}
	}

	public function testToArray() {
		$array=$this->list->toArray();
		$this->assertTrue(count($array)==2 && $array[0]===$this->item1 && $array[1]===$this->item2);
	}

	public function testArrayRead() {
		$this->assertTrue($this->list[0]===$this->item1);
		$this->assertTrue($this->list[1]===$this->item2);
		try {
			$a=$this->list[2];
			$this->fail('exception not raised when accessing item with out-of-range index');
		} catch(TInvalidDataValueException $e) {
		}
	}

	public function testGetIterator() {
		$n=0;
		$found=0;
		foreach($this->list as $index=>$item) {
			foreach($this->list as $a=>$b);	// test of iterator
				$n++;
			if($index===0 && $item===$this->item1)
				$found++;
			if($index===1 && $item===$this->item2)
				$found++;
		}
		$this->assertTrue($n==2 && $found==2);
	}

	public function testArrayMisc() {
		$this->assertEquals($this->list->Count,count($this->list));
		$this->assertTrue(isset($this->list[1]));
		$this->assertFalse(isset($this->list[2]));
	}

	public function testOffsetSetAdd() {
		$list = new TList(array(1, 2, 3));
		$list->offsetSet(null, 4);
		self::assertEquals(array(1, 2, 3, 4), $list->toArray());
	}

	public function testOffsetSetReplace() {
		$list = new TList(array(1, 2, 3));
		$list->offsetSet(1, 4);
		self::assertEquals(array(1, 4, 3), $list->toArray());
	}

	public function testOffsetUnset() {
		$list = new TList(array(1, 2, 3));
		$list->offsetUnset(1);
		self::assertEquals(array(1, 3), $list->toArray());
	}
}