public void RegisterLanguageSource(ILanguageSource languageSource) { Argument.IsNotNull("languageSource", languageSource); _languageSources.Insert(0, languageSource); }
public void ThrowsArgumentExceptionForNullLanguageSource() { var languageService = new LanguageService(); ExceptionTester.CallMethodAndExpectException<ArgumentNullException>(() => languageService.RegisterLanguageSource(null)); }