
10.3 Testing Techniques 271
TABLE 10.3 Boundary Values and Reduced Test Cases
Class All Cases Belonging Cases Reduced Cases
Low ⫺1,0 ⫺1 ⫺1
0–12 ⫺1,0,1, 11,12,13 0,1, 11,12 0 12
13–19 12,13,14 18,19,20 13,14 18,19 13 19
20–35 19,20,21 34,35,36 20,21 34,35 20 35
36–120 34,35,36 119,120,121 35,36 119,120 36 120
High 120,121 121 121
them even further by considering which cases are most important. How-
ever, do not let the number of test cases become an excuse for not conduct-
ing a thorough test.
Also note that this technique is applicable only to ordinal variables—that
is, those that can be sorted and organized in intervals. Without this organi-
zation there ...