浓缩咖啡测试列表视图项目单击子视图的单击操作(扩展框架布局)

Question

我有一个活动，在这个活动中我有多个子视图：

public class CategoriesActivity extends AppCompatActivity {
private StaggeredGridLayoutManager categoryGridLayoutManager;
private DrawerLayout mDrawerLayout;
private RecyclerView recyclerView;
private NavigationView navigationView;
private List<Category> categoryList;
private Toolbar toolbar;
private MaterialSearchView searchView;
...
}

我有一个工具栏，在这个工具栏上有一个菜单按钮和一个搜索按钮。

主屏幕如下所示：

[初始屏幕] (https://i.stack.imgur.com/vQbtB.jpg(

单击搜索按钮时，搜索视图将在现有列表视图的顶部打开，如下所示：

[搜索屏幕] (https://i.stack.imgur.com/Cqzhb.jpg(

我有兴趣测试搜索的功能，更准确地说，使用 Espresso 测试单击搜索视图的每一行的操作(例如，选中单击"您好"，然后选中单击"Bonjour"等(。

到目前为止，我所拥有的是以下内容(获取建议数量有效(：

@RunWith(AndroidJUnit4.class)
public class CategoryActivityInstrumentedTests {
@Rule
public ActivityTestRule<CategoriesActivity> activityActivityTestRule = new ActivityTestRule<CategoriesActivity>(CategoriesActivity.class);
@Before
public void init(){
//activityActivityTestRule.getActivity().getSupportFragmentManager().beginTransaction();
Utils.level = 2;
}
@Test
public void TestSuggestions(){
onView(withId(R.id.action_search)).perform(click());
onView(withId(R.id.search_view)).perform(new MyCustomViewAction());
}
public class MyCustomViewAction implements ViewAction {
int size = 0;
@Override
public Matcher<View> getConstraints(){
return isAssignableFrom(MaterialSearchView.class);
}

@Override
public String getDescription(){
return "whatever, size = " + size;
}
@Override
public void perform(UiController uiController, View view){
MaterialSearchView yourCustomView = (MaterialSearchView) view;
size = yourCustomView.getSuggestionsCount();
System.out.println(size);
yourCustomView.mSuggestionsListView.performItemClick(yourCustomView.mSuggestionsListView.getAdapter().getView(1, null, null), 1, yourCustomView.mSuggestionsListView.getAdapter().getItemId(1));
//getItemAtPosition(0) toString(); // .performClick();
Log.e(Constants.TAG_CategoriesActivity, " size = " + size);
}
}
}

问题是我无法在此活动中获取此列表(搜索视图包含建议列表(，因此，我无法对此视图的元素执行单击操作。

当我在 MyCustomViewAction 中执行单击时，它可以工作，但我的主活动中出现空指针异常，因为视图组未初始化。

这是我的搜索视图的代码：

public class MaterialSearchView extends FrameLayout implements Filter.FilterListener {
//Views
private View mSearchLayout;
private View mTintView;
public ListView mSuggestionsListView;
private EditText mSearchSrcTextView;
private ImageButton mBackBtn;
private ImageButton mVoiceBtn;
private ImageButton mEmptyBtn;
private RelativeLayout mSearchTopBar;
...
}

有什么想法吗？ 谢谢！

---

编辑

我在我的测试方法TestAdvice((中尝试了以下调用：

onData(allOf(withText("Bonjour"))) // Find the row in the list .inAdapterView(withId(R.id.search_view)) // Find the list in the view hierarchy .perform(click());

我得到了以下异常：

`I/TestRunner: android.support.test.espresso.PerformException: Error performing 'load adapter data' on view 'with id: com...:id/search_view'.`

Answer 1

我终于找到了解决方案(至少有 2 种解决方案(：

第一个解决方案：

@Test
public void TestSuggestions1(){
for (int i=0 ; i<4081; i++) {
onView(withId(R.id.action_search)).perform(click());    // opens the search
Espresso.pressBack();   // performs the go back action to dismiss the keyboard
onData(anything())      // selects the actual item at the desired position (which opens another activity)
.atPosition(i)
.perform(click());
Espresso.pressBack();   // performs the go back action from the newer activity
Log.e("TestSuggestions", " i = " + i);
}
}

我去4081，因为这是我的建议数量。

第二种解决方案：

@Test
public void TestSuggestions2() {
for (i = 0; i < 4081; i++) {
onView(withId(R.id.action_search)).perform(click());    // opens the search
try {
Thread.sleep(250);
} catch (InterruptedException e) {
e.printStackTrace();
}
Espresso.pressBack();   // performs the go back action from the newer activity
onView(withId(R.id.search_view)).perform(new MyCustomViewAction()); // selects the actual item at the desired position (which opens another activity)
try {
Thread.sleep(250);
} catch (InterruptedException e) {
e.printStackTrace();
}
Espresso.pressBack();
}
}

使用以下我的自定义视图操作：

public class MyCustomViewAction implements ViewAction {
int size = 0;
@Override
public Matcher<View> getConstraints(){
return isAssignableFrom(MaterialSearchView.class);
}
@Override
public String getDescription(){
return "whatever, size = " + size;
}
@Override
public void perform(UiController uiController, View view){
MaterialSearchView yourCustomView = (MaterialSearchView) view;
size = yourCustomView.getSuggestionsCount();
yourCustomView.mSuggestionsListView.performItemClick(yourCustomView.mSuggestionsListView.getAdapter().getView(i, null, null), i, yourCustomView.mSuggestionsListView.getAdapter().getItemId(i));
Log.e(Constants.TAG_CategoriesActivity, " size = " + size);
}
}

其中 i 是我的 TestClass 中的一个全局变量，从 0 开始。