The statement given about the true testing mechanism is false.
Testing is the way toward assessing a framework or its component(s) with the plan to discover whether it fulfills the predefined necessities or not. It is a process of executing a framework so as to distinguish any holes, blunders, or missing prerequisites in as opposed to the real necessities.
The concept of true testing is not to falsify all possible explanation. It means to come up with a solution which is true in all aspects.
