DRE E ED DRE Defect Removal Efficiency E
- Slides: 41
소프트웨어 품질과 테스트 소프트웨어 DRE = E E+D DRE: Defect Removal Efficiency E: total error before delivery D: total error after delivery 99. 9 s/w eng_y. e. han 1
전체 테스트 - exhaustive test Loop < 20 x 99. 9 s/w eng_y. e. han 5
선택적 테스트 - selective test Loop < 20 x 99. 9 s/w eng_y. e. han 6
테스트 원칙 - 6 Test와 debugging은 동일한 작업이 아니다 test Result symptoms Suspected cause New test data 99. 9 Debugging s/w eng_y. e. han 12
소프트웨어 테스팅 White-box method Black-box method 방법론 method 전략 strategies 99. 9 s/w eng_y. e. han 13
기초 경로 테스트: basis path test- 1 1 우선: cyclomatic complexity를 계산한다 ; V(G) 2 4 - V(G) = simple decision no. + 1 3 5 6 - V(G) = enclosed area no. + 1 - V(G) = 3 + 1 = 4 7 99. 9 s/w eng_y. e. han 17
Loop test Simple loop 99. 9 Nested loop Concatenated loop s/w eng_y. e. han Unstructed loop 20
테스트 전략 Unit test 단위 테스트 시스템 테스트 통합 테스트 System test Integration test 확인 테스트 Validation test 99. 9 s/w eng_y. e. han 25
단위 테스트: unit test 테스트 케이스 테스트될 모듈 테스트 결과 - 인터페이스: interface - 자료구조: local data structure - 경계조건: boundary condition - 독립경로: independent paths - 오류 취급 경로: error handling paths 99. 9 s/w eng_y. e. han 27
시스템 테스트: system test External input or “live” data base 외부 입력 Target operating system 목표 OS 응용 SW Application software 목표 HW Target hardware 99. 9 s/w eng_y. e. han 36
debugging “ diagnostic process “ “ 진단과정 “ 99. 9 s/w eng_y. e. han 38
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