public void DeleteOperation_CreateInverse_CreatesInsertOperation()
{
var state = new DocumentState(1, "1234");
var delete = new DeleteOperation(state, 2);
Assert.IsInstanceOfType(delete.CreateInverse(state), typeof(InsertOperation));
}
public void DeleteOperation_CreateInverse_InverseUndoesDelete()
{
var state = new DocumentState(1, "1234");
var delete = new DeleteOperation(state, 2);
var deletedstate = delete.ApplyTransform(state.CurrentState);
Assert.AreEqual(state.CurrentState, delete.CreateInverse(state).ApplyTransform(deletedstate));
}