我创建了一个ListView
的布局,根据按下的2个给定按钮中的哪个更新值。按下标有赔率的按钮将清除所有值,并将奇数加到20.除均数之外,按下均匀值相同。这在真实设备上模拟或尝试时工作正常。以下是活动代码。
public class ListViewActivity extends Activity {
private ListView mainListView;
private ArrayAdapter<String> listAdapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.robolectric_test_main);
mainListView = (ListView) findViewById(R.id.mainListView);
ArrayList<String> numbersList = new ArrayList<String>();
for (int i = 1; i < 21; i++) {
numbersList.add(String.valueOf(i));
}
listAdapter = new ArrayAdapter<String>(this, R.layout.robolectric_listview_row, numbersList);
mainListView.setAdapter(listAdapter);
}
public void onOddsClicked(View view) {
listAdapter.clear();
for (int i = 1; i < 21; i += 2) {
listAdapter.add(String.valueOf(i));
}
}
public void onEvensClicked(View view) {
listAdapter.clear();
for (int i = 2; i < 21; i += 2) {
listAdapter.add(String.valueOf(i));
}
}
}
然而,当尝试使用Robolectric进行测试时,ListView
永远不会更新,即使适配器具有值修改。这是我的测试代码。
@RunWith(RobolectricTestRunner.class)
public class ListViewActivityTest {
private ListViewActivity listViewActivity;
private Button oddsButton;
private Button evensButton;
private ListView numbersList;
@Before
public void setUp() throws Exception {
listViewActivity = Robolectric.buildActivity(ListViewActivity.class).create().start().resume().visible().get();
assignFields();
}
private void assignFields() {
oddsButton = (Button) listViewActivity.findViewById(R.id.oddsButton);
evensButton = (Button) listViewActivity.findViewById(R.id.evensButton);
numbersList = (ListView) listViewActivity.findViewById(R.id.mainListView);
}
@Test
public void odds() throws Exception {
// check all numbers are odd
Robolectric.clickOn(oddsButton);
Robolectric.runUiThreadTasksIncludingDelayedTasks();
for (int i = 0; i < numbersList.getChildCount(); i++) {
TextView number = (TextView) numbersList.getChildAt(i);
String numberString = number.getText().toString();
int parsedInt = Integer.parseInt(numberString);
assertTrue((parsedInt % 2) == 1);
}
}
@Test
public void evens() throws Exception {
// check all numbers are even
Robolectric.clickOn(evensButton);
Robolectric.runUiThreadTasksIncludingDelayedTasks();
for (int i = 0; i < numbersList.getChildCount(); i++) {
TextView number = (TextView) numbersList.getChildAt(i);
String numberString = number.getText().toString();
int parsedInt = Integer.parseInt(numberString);
assertTrue((parsedInt % 2) == 0);
}
}
}
您能告诉我需要做些什么才能通过Robolectric在ListView
上触发更新。
答案 0 :(得分:10)
在robolectric中,您必须调用ShadowListView.populateItems()
才能获得适配器更改
Robolectric 3.0
ShadowListView shadowListView = Shadows.shadowOf(mListView);
shadowListView.populateItems();
Robolectric 2.0
ShadowListView shadowListView = Robolectric.shadowOf(listView);
shadowListView.populateItems();
答案 1 :(得分:4)
只是为了更新Robolectric 3.0的答案
ShadowListView shadowListView = Shadows.shadowOf(mListView);
shadowListView.populateItems();