public void ShouldGetDefaultContent() { var container = new CultureContentContainer(); var sut = new ContentHandler(container); //set a couple of cultures sut.AddCultureContents(new Dictionary <CultureInfo, ICultureContent> { { new CultureInfo("nl-NL"), new CultureContent() }, { new CultureInfo("ru-KZ"), null }, { new CultureInfo("en-GB"), null } }); Assert.NotNull(sut.GetDefaultContent()); }