public void NonExistantValuesCannotBeRetrieved()
{
UserDataCollection collection = new UserDataCollection();
Assert.IsFalse(collection.HasValue(new Key<int>("key")));
int value;
Assert.IsFalse(collection.TryGetValue(new Key<int>("key"), out value));
Assert.AreEqual(0, value);
Assert.Throws<KeyNotFoundException>(delegate { collection.GetValue(new Key<int>("key"));});
Assert.AreEqual(42, collection.GetValueOrDefault(new Key<int>("key"), 42));
}
public void ExistingValuesCanBeRetrieved()
{
UserDataCollection collection = new UserDataCollection();
collection.SetValue(new Key<int>("key"), 123);
Assert.IsTrue(collection.HasValue(new Key<int>("key")));
Assert.AreEqual(123, collection.GetValue(new Key<int>("key")));
Assert.AreEqual(123, collection.GetValueOrDefault(new Key<int>("key"), 0));
int value;
Assert.IsTrue(collection.TryGetValue(new Key<int>("key"), out value));
Assert.AreEqual(123, value);
}
public void CanCopyAnEmptyCollection()
{
UserDataCollection source = new UserDataCollection();
UserDataCollection copy = source.Copy();
Assert.IsFalse(copy.HasValue(new Key<int>("key")));
copy.SetValue(new Key<int>("key"), 33);
Assert.AreEqual(33, copy.GetValue(new Key<int>("key")));
Assert.IsFalse(source.HasValue(new Key<int>("key")));
}
public void ExistingValuesCanBeRemoved()
{
UserDataCollection collection = new UserDataCollection();
collection.SetValue(new Key<int>("key"), 123);
Assert.IsTrue(collection.HasValue(new Key<int>("key")));
collection.RemoveValue(new Key<int>("key"));
Assert.IsFalse(collection.HasValue(new Key<int>("key")));
}
public void NonExistantValuesCanBeRemovedWithoutSideEffects()
{
UserDataCollection collection = new UserDataCollection();
collection.RemoveValue(new Key<int>("key"));
Assert.IsFalse(collection.HasValue(new Key<int>("key")));
}