public void CountriesTest() { string gc = Countries.GetCode(string.Empty); Assert.AreEqual(gc, string.Empty); gc = Countries.GetCode(null); Assert.AreEqual(gc, string.Empty); gc = Countries.GetCode("qqqqqqqqqqqqqqq"); Assert.AreEqual(gc, "QQ"); string str = Countries.GetName(string.Empty); Assert.AreEqual(str, string.Empty); str = Countries.GetName(null); Assert.AreEqual(str, string.Empty); str = Countries.GetName("qqqqqqqqqqqqqqq"); Assert.AreEqual(str, string.Empty); str = Countries.GetName("gqpqqqqqqqqqusq"); Assert.AreEqual(str, "United States"); }