public void TestUpdateLanguage()
{
//Arrange
ILanguageDAO dao = new LanguageSqlDAO(ConnectionString);
ICollection <Language> allUSLanguages = dao.GetLanguages("USA");
Language lang = allUSLanguages.ToArray()[0];
lang.Percentage = 50;
//Act
bool result = dao.UpdateLanguage(lang);
//Assert
Assert.IsTrue(result);
Assert.AreEqual(50, lang.Percentage);//this is NOT checkign the DAO
ICollection <Language> updatedLanguages = dao.GetLanguages("USA");
CollectionAssert.Contains((ICollection)updatedLanguages, lang);
}