Question

我正在尝试测试一个Angular服务，我知道它在功能上已经存在了一段时间。我现在只是来复古一些测试，但我得到一个奇怪的问题，我得到一个消息＆＃34;必须从$ get factory方法返回一个值＆＃34;来自茉莉花测试。

该服务在网站中有效，服务返回API

 var service = {
        setStartLanguage: setStartLanguage,
        setLanguage: setLanguage,
        supportedLanguages: supportedLanguages,
        currentLanguage: etCurrentLanguage.currentLanguage,
        getLanguage: getLanguage
    };

    return service;

我相信这足以让它发挥作用，但我无法弄清楚为什么测试会抱怨它没有返回$ get。

哦，我为测试所做的一切都是试图期望定义服务。

编辑：完整的服务代码，

(function () {
'use strict';

angular.module('app.core').factory('etLanguageService', ['$translate', '$route', 'etCurrentLanguage', 'supportedLanguages', 'localStorageService', etLanguageService]);

function etLanguageService($translate, $route, etCurrentLanguage, supportedLanguages, localStorageService) {

    function setLanugageFromLocalStorage(storedLanguage) {
         etCurrentLanguage.currentLanguage = storedLanguage;
        $translate.preferredLanguage(etCurrentLanguage.currentLanguage.code);
        localStorageService.set('currentLanguage', etCurrentLanguage.currentLanguage);
    }

    function setLanguageFromBrowser() {
        var language = etCurrentLanguage.get();

        if (!language) {
            language = '';
        }

        var cleanLanguage = language.substr(0, 2).toLowerCase();


        var supportedLanguage = _.find(supportedLanguages, function(language) {
            return language.code === cleanLanguage;
        });

        $translate.preferredLanguage(supportedLanguage.code);
        localStorageService.set('currentLanguage', supportedLanguage);
    }

    function setStartLanguage() {

       // first check if we have a stored language
       var storedLanguage = localStorageService.get('currentLanguage');

       if (storedLanguage) {
           setLanugageFromLocalStorage(storedLanguage);
       } else {
           setLanguageFromBrowser();
       }

    }

    function setLanguage(language) {
        if (etCurrentLanguage.currentLanguage !== language) {
            etCurrentLanguage.currentLanguage = language;
            $translate.use(etCurrentLanguage.currentLanguage.code).then(function () {
                localStorageService.set('currentLanguage', etCurrentLanguage.currentLanguage);

                $route.reload();
            });
        }
    }

    function getLanguage() {
        return localStorageService.get('currentLanguage');
    }

    var service = {
        setStartLanguage: setStartLanguage,
        setLanguage: setLanguage,
        supportedLanguages: supportedLanguages,
        currentLanguage: etCurrentLanguage.currentLanguage,
        getLanguage: getLanguage
};

    return service;
}

}());

Answer 1

如果没有更多的测试代码，那很难说清楚。

$get是您服务提供商提供的方法。对于每个服务，都有一个提供者负责通过$get方法创建服务实例。如果您有一项名为myService的服务，则会有一个提供商myServiceProvider。 Internaly，当引导您的应用时，Angular会调用mysServiceProvider.$get来获取您的服务实例。

如果您正在修补提供商和模拟提供商，那可能是一个原因......

必须从$ get factory方法返回一个值

1 个答案: