private void MergeTestCore <T>(IList <T> source, IList <T> target, ExpectedCollectionChange expectedCollectionChange, IEqualityComparer <T>?comparer = null, bool useMoveAction = false)
{
var insertCounter = 0;
var removeCounter = 0;
var resetCounter = 0;
var moveCounter = 0;
void InsertAction(int idx, T item)
{
target.Insert(idx, item);
insertCounter++;
}
void RemoveAction(int idx)
{
target.RemoveAt(idx);
removeCounter++;
}
void ResetAction()
{
target.Clear();
foreach (var item in source)
{
target.Add(item);
}
resetCounter++;
}
Action <int, int>?moveAction = null;
if (useMoveAction)
{
moveAction = (oldIndex, newIndex) =>
{
T item = target[oldIndex];
target.RemoveAt(oldIndex);
target.Insert(newIndex, item);
moveCounter++;
}
}
;
if (useMoveAction)
{
target.Merge(new ReadOnlyCollection <T>(source), comparer, InsertAction, RemoveAction, ResetAction, moveAction);
}
else
{
target.Merge(new ReadOnlyCollection <T>(source), comparer, InsertAction, RemoveAction, ResetAction);
}
AssertHelper.SequenceEqual(target, source, comparer ?? EqualityComparer <T> .Default);
Assert.AreEqual(expectedCollectionChange == ExpectedCollectionChange.Insert ? 1 : 0, insertCounter);
Assert.AreEqual(expectedCollectionChange == ExpectedCollectionChange.Remove ? 1 : 0, removeCounter);
Assert.AreEqual(expectedCollectionChange == ExpectedCollectionChange.Reset ? 1 : 0, resetCounter);
Assert.AreEqual(expectedCollectionChange == ExpectedCollectionChange.Move ? 1 : 0, moveCounter);
}
private void MergeTestCore <T>(IList <T> source, IList <T> target, ExpectedCollectionChange expectedCollectionChange, IEqualityComparer <T> comparer = null)
{
var insertCounter = 0;
var removeCounter = 0;
var resetCounter = 0;
Action <int, T> insertAction = (idx, item) => insertCounter++;
Action <int> removeAction = idx => removeCounter++;
Action resetAction = () => resetCounter++;
ListMerger.Merge(new ReadOnlyCollection <T>(source), target, comparer, insertAction, removeAction, resetAction);
Assert.AreEqual(expectedCollectionChange == ExpectedCollectionChange.Insert ? 1 : 0, insertCounter);
Assert.AreEqual(expectedCollectionChange == ExpectedCollectionChange.Remove ? 1 : 0, removeCounter);
Assert.AreEqual(expectedCollectionChange == ExpectedCollectionChange.Reset ? 1 : 0, resetCounter);
}
private void MergeTestCore <T>(IList <T> source, IList <T> target, ExpectedCollectionChange expectedCollectionChange, IEqualityComparer <T> comparer = null, bool useMoveAction = false)
{
var insertCounter = 0;
var removeCounter = 0;
var resetCounter = 0;
var moveCounter = 0;
Action <int, T> insertAction = (idx, item) =>
{
target.Insert(idx, item);
insertCounter++;
};
Action <int> removeAction = idx =>
{
target.RemoveAt(idx);
removeCounter++;
};
Action resetAction = () =>
{
target.Clear();
foreach (var item in source)
{
target.Add(item);
}
resetCounter++;
};
Action <int, int> moveAction = null;
if (useMoveAction)
{
moveAction = (int oldIndex, int newIndex) =>
{
T item = target[oldIndex];
target.RemoveAt(oldIndex);
target.Insert(newIndex, item);
moveCounter++;
}
}
;
target.Merge(new ReadOnlyCollection <T>(source), comparer, insertAction, removeAction, resetAction, moveAction);
Assert.IsTrue(target.SequenceEqual(source, comparer ?? EqualityComparer <T> .Default));
Assert.AreEqual(expectedCollectionChange == ExpectedCollectionChange.Insert ? 1 : 0, insertCounter);
Assert.AreEqual(expectedCollectionChange == ExpectedCollectionChange.Remove ? 1 : 0, removeCounter);
Assert.AreEqual(expectedCollectionChange == ExpectedCollectionChange.Reset ? 1 : 0, resetCounter);
Assert.AreEqual(expectedCollectionChange == ExpectedCollectionChange.Move ? 1 : 0, moveCounter);
}