Php/phpunit/モックオブジェクト/テスト対象にprotectedメソッドが含まれている場合

• PointProtected.php

class PointProtected
{
    private $_point = 0;
    public function add($point)
    {
        $this->_point += $point;
        return $this;
    }
    public function getPoint()
    {
        $this->checkException();
        return $this->_point;
    }
    private function checkException()
    {
        if ($this->_point < 0) {
            throw new Exception();
        }
    }
}

• PointMockProtectedTest.php

require_once __DIR__ . '/../../application/PointProtected.php';
class PointMockProtectedTest extends PHPUnit_Framework_TestCase
{
    public function testGetPoint()
    {
        // Point クラスのスタブを作成します
        $stub = $this->getMock('PointProtected', array('checkException'));
        // protectedのcheckExceptionを通さないようスタブの設定を行います
        $stub->expects($this->any())
             ->method('checkException')
             ->will($this->returnValue(null));
        $stub->add(-10);
        $this->assertThat($stub->getPoint(), $this->equalTo(-10));
    }
}