It was very confusing for me to do this exercise as I was not able to check how the Database class looks like. I could not check the logic, whether I have to impelement some of the part, which were already in Database class. In the end, the exercise was easy, but I had to download it locally and check the tests.
I suggest to add to task main file how the Database is implemented.
I agree, this task is very confusing to solve because the instructions are missing critical details.
How do you know that Database has DbState? How can you guess the fields of the State enum?
I haven’t solved the exercise myself (yet), but from looking through the instructions the missing information is about the DbState field and the State enum. We could add that here:
Note that, internally, the database transitions through a number of states. These states are part of its enum `State`: `TransactionStarted`, `DataWritten`, `Invalid`, `Closed`. Read the current state from the public field `DbState` on the database object. You can rely on the fact that the database is in a `Closed` state at the start of each exercise.
Would that help?