Consider the simple case of testing 2 variables, X and Y, where X must be a non-negative number and Y must be a number between -5 and +15. Utilizing boundary analysis, list the test cases.
Answer: Assuming that the variables X and Y are independent, then:
For variable X: we would have a test case for below boundary, -2.4, at the boundary, 0, and within the boundary, +200.78.
For variable Y: we would have a test case for below the boundary, -7.3, at the lower boundary, -5, within the boundary 0, at the upper boundary, +15, and above the upper boundary, +1002.