Given the following sample of pseudo code: Input ExamScore If ExamScore = 120 then Print "Candidate has achieved a distinction" EndIf EndIf. What is the minimum number of test cases required to guarantee 100% decision coverage?

Question

Given the following sample of pseudo code: Input ExamScore If ExamScore <= 75 then      Print "Candidate has failed" Else      Print "Candidate has passed"      If ExamScore >= 120 then           Print "Candidate has achieved a distinction"      EndIf EndIf. What is the minimum number of test cases required to guarantee 100% decision coverage?

Quizplus · Accepted Answer

To achieve 100% decision coverage, we need to test both branches of the if statement. Therefore, we need at least one test case where ExamScore is less than or equal to 75 (to test the first branch) and one test case where ExamScore is greater than or equal to 120 (to test the nested if statement). However, we also need a third test case where ExamScore is between 75 and 120, so that we can test the else branch of the if statement. Therefore, the minimum number of test cases required to guarantee 100% decision coverage is 3.

Given the Following Sample of Pseudo Code: Input ExamScore If