Android Espresso如何使用apk編寫測試？

Question

我是robotium用戶現在切換到濃咖啡誰能告訴我怎麼寫的咖啡使用APK測試，正如我們在robotium做，而不必acccess的代碼，但使用的應用程序的apk。

以及如何訪問咖啡中沒有R.id.viewid的視圖？正如我們在robotium做

solo.getview("viewidText") 

在robotium這是我們如何做到

public class CoreTest extends ActivityInstrumentationTestCase2 { 
private Solo solo; 

//class name of the app launcher activity 
private static final String LAUNCHER_ACTIVITY_FULL_CLASSNAME = "com.rex.binderapps.RecorderActivity"; 


private static Class<?> launcherActivityClass; 

static { 
    try { 
     launcherActivityClass = Class.forName(LAUNCHER_ACTIVITY_FULL_CLASSNAME); 
    } catch (ClassNotFoundException e) { 
     throw new RuntimeException(e); 
    } 
} 

@SuppressWarnings("unchecked") 
public CoreRecordingTest() throws ClassNotFoundException { 
    super(launcherActivityClass); 
} 

public void setUp() throws Exception { 
    super.setUp(); 
    solo = new Solo(getInstrumentation()); 
    Test.setup(this); 
    getActivity(); 
} 

@Override 
public void tearDown() throws Exception { 
    solo.finishOpenedActivities(); 
    super.tearDown(); 
} 
... 

在咖啡

@RunWith(AndroidJUnit4.class) 
public class MainActivityTest { 

// RecorderActivity is not accessible 
@Rule public final ActivityRule<RecorderActivity> main = new ActivityRule<>(RecorderActivity.class); 

@Test 
public void launchMain(){ 

    } 
} 

如何指定類名？

Answer 1

您可以使用相同的反射技術在ActivityTestRule指定類：

@RunWith(AndroidJUnit4.class) 
public class MainActivityTest { 

    private static final String CLASSNAME = "com.rex.binderapps.RecorderActivity"; 

    private static Class<? extends Activity> activityClass; 
    static { 
    try { 
     activityClass = (Class<? extends Activity>) Class.forName(CLASSNAME); 
    } catch (ClassNotFoundException e) { 
     throw new RuntimeException(e); 
    } 
    } 

    @Rule 
    public final ActivityTestRule<?> activityRule 
     = new ActivityTestRule<>(activityClass); 

    @Test 
    public void launchMain() { 

    } 
}