public function testAddGetRemove()
{
$item1 = 'item 1';
$item2 = 'item 2';
$item3 = 'item 3';
$items = [$item1, $item2];
$list = new ArrayList();
$list->add($item1);
$this->assertEquals(1, $list->size());
$this->assertEquals($list->get(0), $item1);
$this->assertNull($list->get(5));
$list->remove($item1);
$this->assertEquals(0, $list->size());
$list->addAll($items);
$this->assertEquals(2, $list->size());
$this->assertEmpty($list->get(2));
$this->assertSame($items, $list->toArray());
$list->add($item3);
$this->assertEquals(3, $list->size());
$list->removeAll($items);
$this->assertEquals(1, $list->size());
}
