Testing Techniques Question:

Test cases written for boundary value analysis are to detect errors or bugs which are likely to arise while testing for ranges of values at boundaries. This is to ensure that the application gives the desired output when tested for boundary values.

E.g. a text box can accept values from minimum 6 characters to 50 characters. Boundary value testing will test for 5 characters, 6 characters, 50 characters and 51 characters.