模拟在Android中获取代码覆盖率的方法

我正在以测试驱动的方式编写Android OpenGL ES 2.0应用程序。这里是我的代码。模拟在Android中获取代码覆盖率的方法

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; 
    } 

}

这是我的测试

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); 
    } 
}

我知道我错误地做这件事。但我需要一种方法来模拟checkForDeviceCompatability以使其返回false。当我运行测试时，我在startActivity调用中得到NullPointerException。我如何模拟函数checkForDeviceCompatability并获取代码覆盖MainActivity类中的else部分？

这是可能的任何类型的嘲讽框架？

来源

2014-02-22 Wizard

不是说我对这种事情有很多经验，但你可以试试Mockito。

当将Dagger依赖注入集成到我的应用程序时，在示例中注意到它。

来源

2014-02-22 01:26:19 cYrixmorten

是的，我认为这也是一种选择，但是我会通过创建对象并启动startActivity来做同样的事情，这会再次导致我出现NullPointerException异常。 – Wizard

模拟在Android中获取代码覆盖率的方法

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