public function testNovelBook()
{
$name = '追风筝的人';
$price = 29.0;
$author = 'Khaled Hosseini';
$book = new NovelBook($name, $price, $author);
$this->assertEquals($name, $book->getName());
$this->assertEquals($price, $book->getPrice());
$this->assertEquals($author, $book->getAuthor());
}
/**
* [getPrice description]
* @return [type] [description]
* @override NovelBook\getPrice()
*/
public function getPrice() : float
{
$oldPrice = parent::getPrice();
if ($oldPrice < 80) {
$newPrice = $oldPrice * 90 / 100;
} else {
if (80 < $oldPrice && $oldPrice <= 300) {
$newPrice = $oldPrice * 80 / 100;
} else {
$newPrice = $oldPrice * 50 / 100;
}
}
return $newPrice;
}