Practical Guide to Testing Object-Oriented Software
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A Practical Guide to Testing Object-Oriented Software focuses on the real-world
issues that arise in planning and implementing effective testing for object-oriented
and component-based software development. It shows how testing object-oriented
software differs from testing procedural software and highlights the unique challenges
and opportunities inherent in object-oriented software testing.
The authors reveal how object-oriented software development allows testing
to be integrated into each stage of the process--from defining requirements
to system integration--resulting in a smoother development process and a higher
end quality. As they follow this process, they describe what to test at each
stage as well as offer experienced-based testing techniques.
You will find information on such important topics as:
- Testing analysis and design models, including selecting test cases to guide
design inspections
- Testing components, frameworks, and product lines
- The testing challenges of inheritance and polymorphism
- How to devise an effective testing strategy
- Testing classes, including constructing a test driver and test suites
- Testing object interactions, covering sampling test cases, off-the-shelf
components, protocol testing, and test patterns
- Testing class hierarchies, featuring subclass test requirements
- Testing distributed objects, including threads, life cycle testing, and
Web server testing
- Testing systems, with information on stress, life cycle, and performance
testing
One comprehensive example runs throughout the book to demonstrate testing techniques
for each stage of development. In addition, the book highlights important questions
that testers should ask when faced with specific testing tasks.
The authors acknowledge that testing is often viewed as a necessary evil, and
that resources allocated to testing are often limited. With that in mind, they
present a valuable repertoire of testing techniques from which you can choose
those that fit your budget, schedule, and needs.
Table of Contents
1. Introduction.
Who Should Read This Book?
What Software Testing Is and Isn't.
What Is Different about Testing Object-Oriented Software?
Overview of Our Testing Approach.
Test Early.
Test Often.
Test Enough.
The Testing Perspective.
Organization of This Book.
Conventions Used in This Book.
A Continuing Example — Brickles.
Basic Brickles Components.
Brickles Physics.
Game Environment.
2. The Testing Perspective.
Testing Perspective.
Object-Oriented Concepts.
Object.
Message.
Interface.
Class.
Inheritance.
Polymorphism.
Development Products.
Analysis Models.
Design Models.
Source Code.
Summary.
3. Planning for Testing.
A Development Process Overview.
A Testing Process Overview.
Risk Analysis — A Tool for Testing.
Risks.
Risk Analysis.
A Testing Process.
Planning Issues.
Dimensions of Software Testing.
Who Performs Testing?
Which Pieces Are Tested?
When is Testing Performed?
How Is Testing Performed?
How Much Testing Is Adequate?
Roles in the Testing Process.
A Detailed Set of Test Activities.
Roles in the Testing Process.
Class Tester.
Integration Tester.
System Tester.
Test Manager.
A Detailed Set of Test Activities.
Planning Activities.
Scheduling Testing Activities.
Estimation.
A Process for Testing Brickles.
Document Templates.
Test Metrics.
Summary.
4. Testing Analysis and Design Models.
An Overview.
Place in the Development Process.
The Basics of Guided Inspection.
Evaluation Criteria.
Organization of the Guided Inspection Activity.
Basic Roles.
Individual Inspection.
Preparing for the Inspection.
Specifying the Inspection.
Realistic Models.
Selecting Test Cases for the Inspection.
Creating Test Cases .
Completing Checklists.
The Interactive Inspection Session.
Testing Specific Types of Models.
Requirements Model.
Analysis Models.
Design Models.
Testing Again.
Testing Models for Additional Qualities.
Summary.
Model Testing Checklist.
Addendum: A Process Definition for Guided Inspection.
Steps in the Process.
Detailed Step Descriptions.
Roles in the Process.
5. Class Testing Basics.
Class Testing.
Ways to Test a Class.
Dimensions of Class Testing.
Constructing Test Cases.
Adequacy of Test Suites for a Class.
Constructing a Test Driver.
Test Driver Requirements.
Tester Class Design.
Summary.
6. Testing Interactions.
Object Interactions.
Identifying Interactions.
Specifying Interactions.
Testing Object Interactions.
Testing Collection Classes.
Testing Collaborator Classes.
The Interaction between Testing and Design Approach.
Sampling Test Cases.
Orthogonal Array Testing.
Adequacy Criteria for OATS.
Another Example.
Another Application of OATS.
Testing Off-the-Shelf Components.
Case Study in Component Acceptance Testing.
Protocol Testing.
Test Patterns.
Listener Test Pattern.
Specific Example.
Testing Exceptions.
Testing Interactions at the System Level.
Summary.
7. Testing Class Hierarchies.
Inheritance in Object-Oriented Development.
Subclass Test Requirements.
Refinement Possibilities.
Hierarchical, Incremental Testing.
Organizing Testing Software.
Testing Abstract Classes.
Summary.
8. Testing Distributed Objects.
Basic Concepts.
Computational Models.
Concurrent.
Parallel.
Networked.
Distributed.
Basic Differences.
Non-Determinism.
Additional Infrastructure.
Partial Failures.
Time Outs.
Dynamic Nature of the Structure.
Threads.
Synchronization.
Path Testing in Distributed Systems.
Thread Models.
Life Cycle Testing.
Models of Distribution.
Basic Client/Server Model.
Standard Models of Distribution.
Comparisons and Implications.
A Generic Distributed Component Model.
Basic Architecture.
Local and Remote Interfaces.
Specifying Distributed Objects.
Interface Definition Language.
Traditional Pre/Post-Conditions and Invariants.
Temporal Logic.
Temporal Test Patterns.
Eventually(a).
Until(a,b).
Always.
A Test Environment.
Class Testing.
Interaction Testing.
Test Cases.
Model-specific tests.
Testing Every Assumption.
Infrastructure Tests.
Logic-Specific Test Cases.
The Ultimate Distributed System — The Internet.
Web Servers.
Life Cycle Testing of Internet Applications.
What Haven't We Said?
Summary.
9. Testing Systems.
Defining the System Test Plan.
Features Tested and Not Tested.
Test Suspension Criteria and Resumption Requirements.
Complementary Strategies for Selecting Test Cases.
Use Profile.
ODC.
Use Cases as Sources of Test Cases.
Constructing Use Profiles.
Using Scenarios to Construct Test Cases.
The Expected Results Section of a Test Case.
Brickles.
Testing Incremental Projects.
Legacy Projects.
Testing Multiple Representations.
What Needs to Be Tested.
Testing Against Functional Requirements.
Testing for Qualitative System Attributes.
Testing the System Deployment.
Testing After Deployment.
Testing Environment Interactions.
Test System Security.
Types of Testing.
Stress Testing.
Life Cycle Testing.
Performance Testing.
Testing Different Types of Systems.
Reactive Systems.
Embedded Systems.
Multi-Tiered Systems.
Distributed Systems.
Measuring Test Coverage.
What Is to Be Covered?
When Is Coverage Measured?
When Is Coverage Used?
ODCDefect Impacts.
More Examples.
Summary.
10. Components, Frameworks, and Product Lines.
Component Models.
Enterprise JavaBeans Component Model.
Testing Components vs. Objects.
Component Test Processes.
Test Cases Based on Interfaces.
Case Study — A GameBoard Component.
Frameworks.
Basic Issues.
Framework Testing Processes.
Inspecting a Framework.
Structuring Test Cases to Support a Framework.
Product Lines.
Testing at the Organizational Management Level.
Testing at the Technical Management Level.
Testing at the Software Engineering Level.
Testing in a Product Line Project.
Future.
Summary.
11. Conclusion.
Suggestions.
Organization and Process.
Data.
Standards.
Software Infrastructure.
Techniques.
Risks.
Brickles.
Finally.
Bibliography.
Index.
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