模擬在Android中獲取代碼覆蓋率的方法

我正在以測試驅動的方式編寫Android OpenGL ES 2.0應用程序。這裏是我的代碼。模擬在Android中獲取代碼覆蓋率的方法

public class MainActivity extends Activity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 

     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     boolean checkCompatability = checkForDeviceCompatablity(); 


     if(checkCompatability) 
     { 
       Toast.makeText(this, "Your device is opengl compatible", Toast.LENGTH_LONG).show(); 

     } 
     else 
     { 
      Toast.makeText(this, "Your device does not support OpenGL", Toast.LENGTH_LONG).show(); 
     } 
    } 

    public boolean checkForDeviceCompatablity() { 
     ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE); 

     ConfigurationInfo info = manager.getDeviceConfigurationInfo(); 
     boolean result = info.reqGlEsVersion >= 0x20000 
      || (Build.VERSION.SDK_INT 
        >= Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1); 

     return result; 
    } 

}

這是我的測試

public class MainActivityTest extends ActivityInstrumentationTestCase2<MainActivity> { 

    private MainActivity mActivity; 

    public MainActivityTest(Class<MainActivity> activityClass) { 
     super(activityClass); 
    } 

    public MainActivityTest(){ 
     super(MainActivity.class); 
    } 

    //The below method would always return me a true as I test it in a real device. 
    public void testIntegrationCheckForConfiguration() { 
     mActivity = getActivity(); 
     mActivity.startActivity(mActivity.getIntent()); 
     boolean resultConfiguration = mActivity.checkForDeviceCompatablity(); 
     assertNotNull(resultConfiguration); 
    } 

    //I need to mock the above method into something like the below method so that I can get coverage for the else block. 
    public void testCheckForConfigurationWhenDeviceIsOfInCorrectConfiguration(){ 
     mActivity = new MainActivity(){ 
      @Override 
      public boolean checkForDeviceCompatablity() { 
       return false; 
      } 
     }; 
     mActivity.startActivity(mActivity.getIntent()); 
     boolean compatability = mActivity.checkForDeviceCompatablity(); 
     assertTrue(compatability); 
    } 
}

我知道我錯誤地做這件事。但我需要一種方法來模擬checkForDeviceCompatability以使其返回false。當我運行測試時，我在startActivity調用中得到NullPointerException。我如何模擬函數checkForDeviceCompatability並獲取代碼覆蓋MainActivity類中的else部分？

這是可能的任何類型的嘲諷框架？

來源

2014-02-22 Wizard

不是說我對這種事情有很多經驗，但你可以試試Mockito。

當將Dagger依賴注入集成到我的應用程序時，在示例中注意到它。

來源

2014-02-22 01:26:19 cYrixmorten

是的，我認爲這也是一種選擇，但是我會通過創建對象並啓動startActivity來做同樣的事情，這會再次導致我出現NullPointerException異常。 – Wizard

模擬在Android中獲取代碼覆蓋率的方法

回答

相關問題