Planning is important if you want to be successful in delivering a project. We plan for each activity at each phase of the development process. Testing is no different. To ensure the quality of the product and perform verification, a test plan is crucial.
A test plan is a document that outlines your approach to verify and test the software product. It's a detailed document prepared by test managers or test leads that highlights the features that need to be verified, the testing strategy, the availability of resources, and their roles. It also contains details about the scope of the test, components that are not part of the test phase, supported browser types and versions, limitations of the tools being used for testing, and so on.
Every phase in the SDLC generates a set of deliverables. For example, the requirement gathering phase generates the BRD, the design phase generates high-level and low-level system and component design plans, and the test planning phase...