spring-mvc - Spring SimpleFormController 中的 Java junit 测试更改区域设置

Question

对于 SpringMVC，我有一个 SimpleFormController 和一个简单的方法，它通过更改语言环境 (i18n) 来更改用户的语言。

    //localization
public void localize(HttpServletRequest request, HttpServletResponse response, String language) throws Exception {
    LocaleResolver localeResolver = RequestContextUtils.getLocaleResolver(request);                

    if (localeResolver != null) {
        LocaleEditor localeEditor = new LocaleEditor();
        localeEditor.setAsText(language);

        // set the new locale
        localeResolver.setLocale(request, response,
                (Locale) localeEditor.getValue());
    }
}

和代码 使用应用程序时工作正常 .但是我想对这种方法进行 Junit 测试，以下是我到目前为止所提出的:

public class LoginPostControllerTest extends TestCase {
public void testLocalize() throws Exception {

    MockHttpServletRequest mockRequest = new MockHttpServletRequest();
    MockHttpServletResponse mockResponse = new MockHttpServletResponse();

    Locale frenchLocale = Locale.CANADA_FRENCH;

    mockRequest.addPreferredLocale(frenchLocale);

    SessionLocaleResolver localeResolver = new SessionLocaleResolver();

    mockRequest.setAttribute(DispatcherServlet.LOCALE_RESOLVER_ATTRIBUTE, localeResolver);

    String language = "zh_CN";

    LoginPostController loginPostControllerTest = new LoginPostController();

    loginPostControllerTest.localize(mockRequest, mockResponse, language);
    System.out.println(mockRequest.getLocale().toString());
}

}

但它打印出“fr_CA”而不是“zh_CN”。有人可以为此提供更好的 Junit 测试策略吗？

Answer 1

您需要在测试中再次获取 localeResolver

LocaleResolver resolver = RequestContextUtils.getLocaleResolver(mockRequest);
System.out.println(mockRequest.getLocale().toString());
System.out.println(resolver.resolveLocale(mockRequest).toString());
assertTrue(!mockRequest.getLocale().equals(resolver.resolveLocale(mockRequest)));