如何处理调用成员函数get()在非对象PHPunit Zend框架2

我正在测试一个扩展了抽象类的服务类。

当尝试运行服务类的测试时，我得到错误"调用成员函数get()在…中的非对象上"。

我正在测试的方法:

 public function findOneHolidayById($holidayId)
{
    $holiday = $this->getEntityManager()
                ->getRepository('Common'Entity'HolidayEntity')
                ->findOneBy(array('id' => $holidayId));
    return $holiday;
}

我正在运行的测试:

 public function testFindOneHolidayById()
{
    $holidayId = 40;
    $holidayService = new 'Common'Service'Holiday'HolidayService();
    $holidayService->findOneHolidayById($holidayId);
}

错误是由测试方法中的代码引起的:

$holidays = $this->getEntityManager()
            ->getRepository('Common'Entity'HolidayEntity')
            ->findAll();

我相信我需要模拟从抽象控制器调用的方法，或沿着这条线的东西，但我不确定如何接近这一点。非常感谢你的帮助。

全栈消息:

...............E.
Fatal error: Call to a member function get() on a non-object in C:'xampp'htdocs'Effcomm-SA-Portal-V1.0'effcomm-sa-portal'module'Common'src'Common'Controller'AbstractController.php on line 40
Call Stack:
    0.0004     125872   1. {main}() C:'xampp'php'phpunit:0
    0.0089     361456   2. PHPUnit_TextUI_Command::main() C:'xampp'php'phpunit:46
    0.0089     364872   3. PHPUnit_TextUI_Command->run() C:'xampp'php'pear'PHPUnit'TextUI'Command.php:129
    1.4460    6229720   4. PHPUnit_TextUI_TestRunner->doRun() C:'xampp'php'pear'PHPUnit'TextUI'Command.php:176
    1.6645    6549216   5. PHPUnit_Framework_TestSuite->run() C:'xampp'htdocs'Effcomm-SA-Portal-V1.0'effcomm-sa-portal'vendor'phpunit'phpunit'src'TextUI'TestRunner.php:406
   36.0976   39708632   6. PHPUnit_Framework_TestSuite->run() C:'xampp'htdocs'Effcomm-SA-Portal-V1.0'effcomm-sa-portal'vendor'phpunit'phpunit'src'Framework'TestSuite.php:722
   39.3706   40551320   7. PHPUnit_Framework_TestCase->run() C:'xampp'htdocs'Effcomm-SA-Portal-V1.0'effcomm-sa-portal'vendor'phpunit'phpunit'src'Framework'TestSuite.php:722
   39.3706   40551288   8. PHPUnit_Framework_TestResult->run() C:'xampp'htdocs'Effcomm-SA-Portal-V1.0'effcomm-sa-portal'vendor'phpunit'phpunit'src'Framework'TestCase.php:699
   39.3726   40554360   9. PHPUnit_Framework_TestCase->runBare() C:'xampp'htdocs'Effcomm-SA-Portal-V1.0'effcomm-sa-portal'vendor'phpunit'phpunit'src'Framework'TestResult.php:609
   39.3758   40588552  10. PHPUnit_Framework_TestCase->runTest() C:'xampp'htdocs'Effcomm-SA-Portal-V1.0'effcomm-sa-portal'vendor'phpunit'phpunit'src'Framework'TestCase.php:743
   39.3759   40589080  11. ReflectionMethod->invokeArgs() C:'xampp'htdocs'Effcomm-SA-Portal-V1.0'effcomm-sa-portal'vendor'phpunit'phpunit'src'Framework'TestCase.php:866
   39.3759   40589200  12. CommonTest'Service'HolidayServiceTest->testFindOneHolidayById() C:'xampp'htdocs'Effcomm-SA-Portal-V1.0'effcomm-sa-portal'vendor'phpunit'phpunit'src'Framework'TestCase.php:866
   39.6060   41121200  13. Common'Service'Holiday'HolidayService->findOneHolidayById() C:'xampp'htdocs'Effcomm-SA-Portal-V1.0'effcomm-sa-portal'module'Common'test'CommonTest'Service'HolidayServiceTest.php:34
   39.6060   41121200  14. Common'Controller'AbstractController->getEntityManager() C:'xampp'htdocs'Effcomm-SA-Portal-V1.0'effcomm-sa-portal'module'Common'src'Common'Service'Holiday'HolidayService.php:57

gettentitymanager:

 protected function getEntityManager()
{
    if (is_null($this->entityManager)) {
        $this->entityManager = $this->getServiceLocator()
                ->get('Doctrine'ORM'EntityManager');
    }
    return $this->entityManager;
}