public function testSetGetBulletType()
{
$object = new Bullet();
$this->assertInstanceOf('PhpOffice\\PhpPresentation\\Style\\Bullet', $object->setBulletType());
$this->assertEquals(Bullet::TYPE_NONE, $object->getBulletType());
$this->assertInstanceOf('PhpOffice\\PhpPresentation\\Style\\Bullet', $object->setBulletType(Bullet::TYPE_BULLET));
$this->assertEquals(Bullet::TYPE_BULLET, $object->getBulletType());
}