如何在列表视图中的阵列适配器上执行espresso测试？

@RunWith(AndroidJUnit4.class)
public class ListViewTest {

    @Rule
    public ActivityTestRule<MainActivity> mActivityRule = new ActivityTestRule<>(MainActivity.class);

    @Test
    public void testListViewAdapter() {
        // 获取到列表视图和适配器对象
        ListView listView = mActivityRule.getActivity().findViewById(R.id.listView);
        ArrayAdapter<String> adapter = (ArrayAdapter<String>) listView.getAdapter();

        // 执行操作和断言
        onView(withId(R.id.listView)).perform(scrollToPosition(5));
        onView(withText("Item 5")).perform(click());
        onView(withText("Item 5 clicked!")).check(matches(isDisplayed()));

        // 验证适配器中的数据
        onData(anything()).inAdapterView(withId(R.id.listView)).atPosition(0).check(matches(withText("Item 1")));
        onData(anything()).inAdapterView(withId(R.id.listView)).atPosition(1).check(matches(withText("Item 2")));
        onData(anything()).inAdapterView(withId(R.id.listView)).atPosition(2).check(matches(withText("Item 3")));
    }
}