Question

我想测试用户更改语言时字符串是否正确更新。我使用Espresso来测试字符串是否与正确的语言环境匹配，我正在改变它，如下所示：

private fun changeLocale(language: String, country: String) {
    val locale = Locale(language, country)
    Locale.setDefault(locale)
    val configuration = Configuration()
    configuration.locale = locale
    context.activity.baseContext.createConfigurationContext(configuration)


    getInstrumentation().runOnMainSync {
        context.activity.recreate()
    }

}

问题是espresso测试onView(withText(expected)).check(matches(isDisplayed()))断言是假的，所以我想知道在运行测试之前设置默认语言环境的正确方法是什么？

Answer 1

根据this回答，您可以通过编程方式更改区域设置：

public class ResourcesTestCase extends AndroidTestCase {

    private void setLocale(String language, String country) {
        Locale locale = new Locale(language, country);
        // here we update locale for date formatters
        Locale.setDefault(locale);
        // here we update locale for app resources
        Resources res = getContext().getResources();
        Configuration config = res.getConfiguration();
        config.locale = locale;
        res.updateConfiguration(config, res.getDisplayMetrics());
    }

    public void testEnglishLocale() {
        setLocale("en", "EN");
        String cancelString = getContext().getString(R.string.cancel);
        assertEquals("Cancel", cancelString);
    }

    public void testGermanLocale() {
        setLocale("de", "DE");
        String cancelString = getContext().getString(R.string.cancel);
        assertEquals("Abbrechen", cancelString);
    }

    public void testSpanishLocale() {
        setLocale("es", "ES");
        String cancelString = getContext().getString(R.string.cancel);
        assertEquals("Cancelar", cancelString);
    }

}

您可以轻松地将该代码转换为Kotlin。

Answer 2

Kotlin版本，基于@Adib Faramarzi的帖子

    private fun setLocale(language: String, country: String) {
       val locale = Locale(language, country)
       // here we update locale for date formatters
       Locale.setDefault(locale)
       // here we update locale for app resources
       val context: Context = getApplicationContext()
       val res: Resources = context.resources
       val config: Configuration = res.configuration
       config.setLocales(LocaleList(locale))
       res.updateConfiguration(config, res.displayMetrics)
}

Answer 3

根据我的经验，在运行时设置语言环境根本不可靠。这个人在这里有更多关于这个话题的话题：https://proandroiddev.com/change-language-programmatically-at-runtime-on-android-5e6bc15c758

您应该尝试使用Firebase测试实验室或类似服务，并在不同设备上运行测试（设置了不同的区域设置）

Android更改测试的区域设置

3 个答案: