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Testing
- 9. Errors and failure Inputs Outputs Error revealing inputs cause failures Erroneous outputs indicate failures Program
- 37. Equivalence partitioning Too many test inputs. Four test inputs, one selected from each sub-domain. Input domain 1 2 3 4 Input domain partitioned into four sub-domains.
- 40. Two sub-domains All test inputs in the X<0 sub-domain are considered equivalent. The assumption is that if one test input in this sub-domain reveals an error in the program, so will the others. This is true of the test inputs in the X>=0 sub-domain also. One test case: X=-3 Another test case: X=-15 X<0 X>=0 Equivalence class Equivalence class
- 44. Overlapping partitions X<Y X>=Y Z>Y Z<=Y X<Y, Z>Y X=3, Y=4, Z=7 X<Y, Z<=Y X=2, Y=3, Z=1 X>=Y, Z>Y X=15, Y=4, Z=7 X>=Y, Z<=Y X=15, Y=4, Z=1
- 48. Partitioning using non-numeric data lc: Lower case character UC: Upper case character null: null string. X: lc X:UC Y: null Y: not null X: lc, Y: null X: lc, Y: not null X: UC, Y: null X: UC, Y: not null