关于zend框架：使用PHPUnit测试ZF控制器的受保护方法

Test protected methods of ZF controllers with PHPUnit

我想测试一个控制器内的受保护方法：

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class AuthenticateController extends Zend_Controller_Action
{
protected function getAuthAdapter(){}
}

我的测试(在这篇文章之后)看起来像这样：

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public function testGetAuthAdapterShouldReturnZendAuthAdapterDbTable()
{
require_once(APPLICATION_PATH.'/controllers/AuthenticateController.php');
$method = new Zend_Reflection_Method('AuthenticateController',
'getAuthAdapter');
$class = new AuthenticateController();
$result = $method->invoke($class);

// assert result value
$this->assertInstanceOf('Zend_Auth_Adapter_DbTable', $result);
}

当我执行测试时，我得到了这个运行时异常

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RuntimeException: Fatal error: Call to a member function getModuleName() on a non-object in /Users/padawan_rodrigo/Documents/workspace/ZendFramework-1.11.5/library/Zend/Controller/Action/Helper/ViewRenderer.php on line 226
Call Stack:
0.0030 396924 1. {main}() -:0
0.0755 4593044 2. __phpunit_run_isolated_test() -:207
0.0771 4718524 3. PHPUnit_Framework_TestCase->run() -:22
0.0785 4798460 4. PHPUnit_Framework_TestResult->run() /usr/local/pear/share/pear/PHPUnit/Framework/TestCase.php:576
0.3565 4827948 5. PHPUnit_Framework_TestCase->runBare() /usr/local/pear/share/pear/PHPUnit/Framework/TestResult.php:666
0.6696 10508956 6. PHPUnit_Framework_TestCase->runTest() /usr/local/pear/share/pear/PHPUnit/Framework/TestCase.php:628
0.6697 10509780 7. ReflectionMethod->invokeArgs() /usr/local/pear/share/pear/PHPUnit/Framework/TestCase.php:738
0.6697 10509796 8. AuthenticateControllerTest->testGetAuthAdapterShouldReturnZendAuthAdapterDbTable() /project/code/tests/application/controllers/AuthenticateControllerTest.php:0
0.6794 10753940 9. Zend_Controller_Action->__construct() /project/code/tests/application/controllers/AuthenticateControllerTest.php:172

我也尝试用同样的结果来模拟这个类。有任何想法吗？

谢谢