/**
* 翻页
*/
public function turnOnPage()
{
$this->eBookReader->nextPage();
}
class EBookReader
{
private $book;
function __construct(EBook $book)
{
$this->book = $book;
}
function read()
{
return $this->book->read();
}
}
class PDFBook implements EBook
{
function read()
{
return "Reading a pdf book.";
}
}
class MobiBook implements EBook
{
function read()
{
return "Reading a mobi book.";
}
}
// Main process
$b = new PDFBook();
//$b = new MobiBook();
$r = new EBookReader($b);
echo $r->read();
function testItCanReadAMobiBook()
{
$b = new MobiBook();
$r = new EBookReader($b);
$this->assertRegExp('/mobi book/', $r->read());
}
