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Full Description
How to Find and Fix the Killer Software Bugs that Evade Conventional Testing In Exploratory Software Testing, renowned software testing expert James Whittaker reveals the real causes of today's most serious, well-hidden software bugs--and introduces powerful new "exploratory" techniques for finding and correcting them. Drawing on nearly two decades of experience working at the cutting edge of testing with Google, Microsoft, and other top software organizations, Whittaker introduces innovative new processes for manual testing that are repeatable, prescriptive, teachable, and extremely effective. Whittaker defines both in-the-small techniques for individual testers and in-the-large techniques to supercharge test teams. He also introduces a hybrid strategy for injecting exploratory concepts into traditional scripted testing. You'll learn when to use each, and how to use them all successfully. Concise, entertaining, and actionable, this book introduces robust techniques that have been used extensively by real testers on shipping software, illuminating their actual experiences with these techniques, and the results they've achieved. Writing for testers, QA specialists, developers, program managers, and architects alike, Whittaker answers crucial questions such as: • Why do some bugs remain invisible to automated testing--and how can I uncover them? • What techniques will help me consistently discover and eliminate "show stopper" bugs? • How do I make manual testing more effective--and less boring and unpleasant? • What's the most effective high-level test strategy for each project? • Which inputs should I test when I can't test them all? • Which test cases will provide the best feature coverage? • How can I get better results by combining exploratory testing with traditional script or scenario-based testing? • How do I reflect feedback from the development process, such as code changes?
Contents
Foreword by Alan Page xv Preface xvii Chapter 1 The Case for Software Quality 1 The Magic of Software 1 The Failure of Software 4 Conclusion 9 Exercises 9 Chapter 2 The Case for Manual Testing 11 The Origin of Software Bugs 11 Preventing and Detecting Bugs 12 Manual Testing 14 Conclusion 19 Exercises 20 Chapter 3 Exploratory Testing in the Small 21 So You Want to Test Software? 21 Testing Is About Varying Things 23 User Input 23 What You Need to Know About User Input 24 How to Test User Input 25 State 32 What You Need to Know About Software State 32 How to Test Software State 33 Code Paths 35 User Data 36 Environment 36 Conclusion 37 Exercises 38 Chapter 4 Exploratory Testing in the Large 39 Exploring Software 39 The Tourist Metaphor 41 "Touring" Tests 43 Tours of the Business District 45 Tours Through the Historical District 51 Tours Through the Entertainment District 52 Tours Through the Tourist District 55 Tours Through the Hotel District 58 Tours Through the Seedy District 60 Putting the Tours to Use 62 Conclusion 63 Exercises 64 Chapter 5 Hybrid Exploratory Testing Techniques 65 Scenarios and Exploration 65 Applying Scenario-Based Exploratory Testing 67 Introducing Variation Through Scenario Op
