static void TestListUndoRedo()
{
DocList <DocObj <int> > testDoc = new DocList <DocObj <int> >();
History.Instance.Root = testDoc;
History.Instance.ExecuteInTransaction(delegate()
{
testDoc.Add(new DocObj <int>(1));
UnitTest.Test(testDoc.Count == 1);
testDoc.Add(new DocObj <int>(2));
UnitTest.Test(testDoc.Count == 2);
testDoc.Add(new DocObj <int>(3));
UnitTest.Test(testDoc.Count == 3);
}, History.Instance.NextFreeTransactionId(), "Dummy");
UnitTest.Test(testDoc[0].Value == 1);
UnitTest.Test(testDoc[1].Value == 2);
UnitTest.Test(testDoc[2].Value == 3);
History.Instance.Undo();
UnitTest.Test(testDoc.Count == 0);
History.Instance.Redo();
UnitTest.Test(testDoc.Count == 3);
UnitTest.Test(testDoc[0].Value == 1);
UnitTest.Test(testDoc[1].Value == 2);
UnitTest.Test(testDoc[2].Value == 3);
testDoc.RemoveAt(0);
UnitTest.Test(testDoc.Count == 2);
UnitTest.Test(testDoc[0].Value == 2);
UnitTest.Test(testDoc[1].Value == 3);
testDoc.Clear();
UnitTest.Test(testDoc.Count == 0);
}
