public function testTagCollection()
{
$pic = new Pic();
$this->assertFalse($pic->containsTag('t'));
$pic->addTag('t');
$this->assertTrue($pic->containsTag('t'));
$pic->removeTag('t');
$this->assertFalse($pic->containsTag('t'));
//Repeat Tag
$this->assertFalse($pic->containsTag('t'));
$pic->addTag('t');
$pic->addTag('t');
$this->assertTrue($pic->containsTag('t'));
$pic->removeTag('t');
$this->assertFalse($pic->containsTag('t'));
$this->assertFalse($pic->removeTag('t'));
//containsAllTag and containsAnyTag
$pic->addTag('t1');
$pic->addTag('t2');
$pic->addTag('t3');
$this->assertTrue($pic->containsAnyTag(array('t0', 't2')));
$this->assertTrue($pic->containsAnyTag(array('t2', 't3')));
$this->assertFalse($pic->containsAnyTag(array('t0', 't4')));
$this->assertTrue($pic->containsAllTags(array('t1', 't2')));
$this->assertTrue($pic->containsAllTags(array('t1')));
$this->assertFalse($pic->containsAllTags(array('t0', 't2')));
$this->assertFalse($pic->containsAllTags(array('t0', 't1', 't2', 't3')));
}
