public void AddCDTest()
{
int oldDictSize = data.cds.Count;
CD cd = new CD()
{
id = 1234,
title = "Nevermind",
group = "Nirvana"
};
dataRepository.AddCD(cd);
int newDictSize = data.cds.Count;
//check if size of new and old dictionary is different
Assert.AreNotEqual(oldDictSize, newDictSize);
//check if dictionary contains object
Assert.IsTrue(data.cds.ContainsKey(1234));
Assert.IsTrue(data.cds.ContainsValue(cd));
}
