Test dei frammenti Android

Question

Ho una logica di business nel frammento UI-less che devo testare. Ho provato 2 opzioni ed entrambi hanno fallito.

1. Utilizzare AndroidTestCase e creare attività fittizie.

Seguendo codice

@Override 
protected void setUp() { 
    Intent i = new Intent(getTestContext(), TestActivity.class); 
    i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
    getTestContext().startActivity(i); 
} 

genera un'eccezione

Permission denied: checkComponentPermission() reqUid=10104 
java.lang.SecurityException: Permission Denial: starting Intent { flg=0x10000000 cmp=com.xxx.iabsample.test/.TestActivity } from ProcessRecord{40769510 28116:com.xxx.iabsample/10070 (pid=28116, uid=10070) requires null 

2. Usare ActivityInstrumentationTestCase2 con l'attività finta

Codice

public class IabTest extends ActivityInstrumentationTestCase2<TestActivity> { 
    public IabTest() { 
     super("com.xxx.iabsample.test", TestActivity.class); 
    } 
} 

.515.053.691,36321 milioni

genera un'eccezione

java.lang.RuntimeException: Unable to resolve activity for: Intent { act=android.intent.action.MAIN flg=0x10000000 cmp=com.xxx.iabsample/.test.TestActivity } 

Sembra che si tenta di avviare l'attività di applicazione di test-bersaglio, non attraverso l'app di prova.

Quindi, qual è il modo corretto di testare i frammenti?

Answer 1

//Please try to use bellow code. 


// activity layout main.xml 
<LinearLayout 
    android:id="@+id/frags" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="horizontal" > 

    <ListView 
     android:id="@+id/number_list" 
     android:layout_width="250dip" 
     android:layout_height="match_parent" /> 

    <fragment 
     android:id="@+id/the_frag" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     class="com.example.fragmenttest.TestFragment" /> 

</LinearLayout> 

//Fragments java class. 



public class TestFragment extends Fragment 

{ 

    private int nAndroids; 

    public TestFragment() { 

    } 

    /** 
    * Constructor for being created explicitly 
    */ 
    public TestFragment(int nAndroids) { 
     this.nAndroids = nAndroids; 
    } 

    /** 
    * If we are being created with saved state, restore our state 
    */ 
    @Override 
    public void onCreate(Bundle saved) { 
     super.onCreate(saved); 
     if (null != saved) { 
      nAndroids = saved.getInt("nAndroids"); 
     } 
    } 

    /** 
    * Save the number of Androids to be displayed 
    */ 
    @Override 
    public void onSaveInstanceState(Bundle toSave) { 
     toSave.putInt("nAndroids", nAndroids); 
    } 

    /** 
    * Make a grid and fill it with n Androids 
    */ 
    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle saved) { 
     int n; 
     Context c = getActivity().getApplicationContext(); 
     LinearLayout l = new LinearLayout(c); 
     for (n = 0; n < nAndroids; n++) { 
      ImageView i = new ImageView(c); 
      i.setImageResource(R.drawable.android); 
      l.addView(i); 
      TranslateAnimation a = new TranslateAnimation(-50, 30, 0, 0); 
      a.setDuration(1000); 

      l.startAnimation(a); 
      a.setFillAfter(true); 
     } 
     return l; 
    } 
} 

// Activity 


public class FragmentTestActivity extends FragmentActivity implements OnItemClickListener { 
    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     ListView l = (ListView) findViewById(R.id.number_list); 
     ArrayAdapter numbers = new ArrayAdapter<String>(getApplicationContext(), 
       android.R.layout.simple_list_item_1, 
       new String [] { 
      "one", "two", "three", "four", "five", "six" 
     }); 
     l.setAdapter(numbers); 
     l.setOnItemClickListener(this); 
    } 


    /** 
    * Add a Fragment to our stack with n Androids in it 
    */ 
    private void stackAFragment(int nAndroids) { 
     Fragment f = new TestFragment(nAndroids); 

     FragmentTransaction ft = getSupportFragmentManager().beginTransaction(); 
     ft.replace(R.id.the_frag, f); 
     ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN); 
     ft.addToBackStack(null); 
     ft.commit(); 
    } 

    /** 
    * Called when a number gets clicked 
    */ 
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
     stackAFragment(position + 1); 
    } 
}