The majority of the time, functional testing involves analysing specific portions of the supporting code. A clearer overall picture could be obtained by comparing actual outputs to expected behaviors rather than by examining each module separately. Errors often occur when modules link to one another.
Non-functional testing examines characteristics of a programme that don't directly influence how it operates but are nonetheless crucial to the user experience.Performance and reliability under pressure, albeit not fundamental components of a software system, may surely improve or break the user experience. Even while anything failing a non-functional test might not always lead to a client problem, it could nonetheless indicate a systemic problem.
Both functional and nonfunctional testing could show great results for your product. However, if it were to be considered If the features and services fell short of what the consumer expected, it would be a failure. Because functional testing assesses each component of the product in reference to functional criteria, you can ensure that the programme functions as it should by utilizing this test strategy. By comparing an application's utility to a set of criteria or requirements, functional testing assesses its usefulness.
Non-functional testing evaluates how well the software performs in a practical or business environment. Non-functional test failures could be a precursor to underlying problems that could eventually lead to a system crash.
For the purpose of ensuring customer satisfaction, this form of testing is also crucial. even if your code is user-friendly and error-free. Your clients will undoubtedly look for superior alternatives.