How to verify if a test case is missed for any requirement?

Software Development
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#1

How to verify if a test case is missed for any requirement?

#2

This activity can be achieved by the followings -

  1. We can’t test all the inputs to the program.
  2. We can’t test all the combinations of inputs to the program.
  3. We can’t test all the paths through the program.
  4. We can’t test for all of the other potential failures, such as those caused by user interface design errors or incomplete requirements analyses.