Question

我一直在寻找关于espresso测试的一段时间，特别是关于自定义闲置资源（我已经实现了几个工作案例），但我遇到了一个我似乎无法解决的问题。

我有一个Espresso SearchUITest类，它启动一个搜索内容的活动。在进行任何搜索之前，我打开SettingsActivity对应用程序配置进行一些更改。从设置活动运行pressBack（）方法以返回到SearchActivity时，将启动后台任务（不使用AsyncTask）以更新配置，然后再返回到SearchActivity。

问题是在完成第一次与其UI交互的调用之前未恢复SearchActivity。我得到了这个异常（有时我得到NoActivityResumedException和其他一些NoMatchingViewException）：

android.support.test.espresso.NoActivityResumedException: No
activities in stage RESUMED. Did you forget to launch the activity.
(test.getActivity() or similar)? ...

android.support.test.espresso.NoMatchingViewException: No views in hierarchy found matching:

如何让Espresso等待SettingsActivity完成后台任务并在运行下一个测试句之前打开SearchActivity。我留下了一些代码以便进一步澄清（顺便说一句，我正在使用espresso进行参数化测试）：

@RunWith(value = Parameterized.class)
public class SearchByCountryE2ETest {

private static List<Country> mCountriesList;
private SearchActivity mActivity;

private String countryID;
private String countryLocation;
private String countryLanguage;

public SearchByCountryE2ETest(String countryID,
                              String countryLocation,
                              String language) {
    this.countryID = countryID;
    this.countryLocation = countryLocation;
    this.countryLanguage = language;
}


@Parameterized.Parameters(name = "id {0}, language{2}")
public static Collection countryIDs() {
    return Arrays.asList(new Object[][]{
            {"001", "mad", "Español (España)"},
            {"002", "lon", "English (United Kingdom)"}
    });
}

@Rule
public ActivityTestRule<SearchActivity> mSearchActivityRule = new ActivityTestRule<>(
        SearchActivity.class);

@Before
public void setUp() throws Exception {
    mSearchActivityRule.getActivity();
    if (mCountriesList == null) {
        mCountriesList = SingletonCommon.getInstance().getCountries().getCountry();
    }
}


@Test
public void testEnd2EndWithCountryID() {
    String countryName = getCountryNameById(countryID);
    if (countryName != null) {
        setCountryAndLanguage(countryName, countryLanguage);
        performCompleteSearch();
    }
}


private void setCountryAndLanguage(String countryName, String countryLanguage) {
    openSettings();
    changeLanguage(countryLanguage);
    changeCountry(countryName);
    pressBack();
    waitMillis(3000); // this is where the settings background task to update config is started
}

public void performCompleteSearch() {
    setLocation();
    clickViewWithId(R.id.search_button);//Go to filters activity

    onView(withId(R.id.search_button)).check(matches(isClickable()));//Check if results != 0
    clickViewWithId(R.id.search_button);//Go to listing activity

    waitMillis(1000); // wait millis is just a call to SystemClock.sleep(millis);

    openListingDetailAtPosition(1);// Click on item an open detail view
    pressBack();
}

private void openListingDetailAtPosition(int position) {
    onView(withId(R.id.recycler_view))
            .perform(scrollToPosition(position));
    onRecyclerViewItemAtPosition(click(), R.id.recycler_view, position);
}

private void openSettings() {
    onView(withId(R.id.drawer_layout)).perform(DrawerActions.open());
    onData(anything()).inAdapterView(withId(R.id.drawer_list_view)).atPosition(SETTINGS_DRAWER_POSITION).perform(click());
}

private void changeLanguage(String countryLanguage){
    if (countryLanguage != null && !countryLanguage.isEmpty()) {
        clickOnSpinnerStringItem(R.id.spinner_list_language, countryLanguage);
    }
}

private void changeCountry(String countryName){
    clickOnSpinnerStringItem(R.id.spinner_list_countries, countryName);
}

private void setLocation() {
    clickViewWithId(R.id.geolocation_edit_text);
    enterTextIntoViewWithId(countryLocation, R.id.location_edit_text);
    waitMillis(500);
    onRecyclerViewItemAtPosition(click(), R.id.locations_list, DEFAULT_SELECTED_LOCATION_POSITION);
    onView(withId(R.id.geolocation_edit_text)).perform(closeSoftKeyboard());
}

}

我不得不添加waitMillis（millis）调用，以便等待应用程序完成从SearchActivity打开的活动的后台任务的加载，因为我无法为在一个之后打开的活动创建和注册空闲资源开始测试。如果有一个关于如何执行此操作的完整示例（为执行测试时打开的不同活动注册空闲资源），我也会非常感激。

如果需要进一步澄清，请告诉我。在此先感谢您的帮助。

Espresso：在pressBack（）之后等待活动完成后台任务

0 个答案: