Interview question

Question:- If a project is long term project , requirements are also changes then test plan will change or not?why

Answer:- Yes. If requirement changes, the design documents, specifications (for that particular module which implements the requirements) will also change. Hence the test plan would also need to be updated. This is because "resources allocation" is one section in the test plan. We would need to write new test cases,review, and execute it. Hence resource allocation would have to be done accordingly. As a result the Test plan would change.