Follow the same rules you used in equivalence partitioning. However,
consider the output specifications as well. For example, if the output
specifications for the inventory system stated
that a report on inventory should indicate a total quantity for all
products no greater than 999,999, then you d add the following classes
to the ones you found previously:
6. The valid class ( 0 < = total quantity on hand < = 999,999 )
7. The invalid class (total quantity on hand <0)
8. The invalid class (total quantity on hand> 999,999 )
STEP 2: DESIGN TEST CASES
In this step, you derive test cases from the equivalence classes. The
process is similar to that of equivalence partitioning but the rules for
designing test cases differ. With equivalence partitioning, you may select
any test case within a range and any on either side of it with boundary
analysis, you focus your attention on cases close to the edges of the range.
