Introduction 2 4 Verification and Validation

Introduction 2

4

Verification and Validation 5

Organizing for Software Testing 6

A Strategy for Testing Conventional Software 7

Levels of Testing for Conventional Software 8

Testing Strategy applied to Conventional Software 9

Testing Strategy applied to Object-Oriented Software 10

When is Testing Complete? 11

Ensuring a Successful Software Test Strategy 12

Unit Testing 14

Targets for Unit Test Cases 15

Common Computational Errors in Execution Paths 16

Other Errors to Uncover 17

Problems to uncover in Error Handling 18

Drivers and Stubs for Unit Testing 19

Integration Testing 20

Non-incremental Integration Testing 21

Incremental Integration Testing 22

Top-down Integration 23

Bottom-up Integration 24

Sandwich Integration 25

Regression Testing 26

Smoke Testing 27

Benefits of Smoke Testing 28

Test Strategies for Object-Oriented Software 30

Test Strategies for Object. Oriented Software (continued) 31

Background 33

Alpha and Beta Testing 34

Different Types 36

Debugging Process 38

Why is Debugging so Difficult? 39

Why is Debugging so Difficult? (continued) 40

Debugging Strategies 41

Strategy #1: Brute Force 42

Strategy #2: Backtracking 43

Strategy #3: Cause Elimination 44

Three Questions to ask Before Correcting the Error 45