import { LanguageService } from './../js/services/languageService'; describe('LanguageService.getLang() ', function () { LanguageService.setLang('pt_br'); it("should return the value passed as parameter to LanguageService.setLang()", function () { expect(LanguageService.getLang()).toEqual('pt_br'); }); afterEach(() => LanguageService.setLang('pt')); });