Next Generation Java Testing: TestNG and Advanced Concepts

Description

Enterprise Java developers must achieve broader, deeper test coverage, going beyond unit testing to implement functional and integration testing with systematic acceptance. Next Generation Java^™ Testing introduces breakthrough Java testing techniques and TestNG, a powerful open source Java testing platform.

Cédric Beust, TestNG's creator, and leading Java developer Hani Suleiman, present powerful, flexible testing patterns that will work with virtually any testing tool, framework, or language. They show how to leverage key Java platform improvements designed to facilitate effective testing, such as dependency injection and mock objects. They also thoroughly introduce TestNG, demonstrating how it overcomes the limitations of older frameworks and enables new techniques, making it far easier to test today's complex software systems.

Pragmatic and results-focused, Next Generation Java^™ Testing will help Java developers build more robust code for today's mission-critical environments.

This book

• Illuminates the tradeoffs associated with testing, so you can make better decisions about what and how to test
• Introduces TestNG, explains its goals and features, and shows how to apply them in real-world environments
• Shows how to integrate TestNG with your existing code, development frameworks, and software libraries
• Demonstrates how to test crucial code features, such as encapsulation, state sharing, scopes, and thread safety
• Shows how to test application elements, including JavaEE APIs, databases, Web pages, and XML files
• Presents advanced techniques: testing partial failures, factories, dependent testing, remote invocation, cluster-based test farms, and more
• Walks through installing and using TestNG plug-ins for Eclipse, and IDEA
• Contains extensive code examples

Whether you use TestNG, JUnit, or another testing framework, the testing design patterns presented in this book will show you how to improve your tests by giving you concrete advice on how to make your code and your design more testable.

 

 

Foreword     xiii
Preface     xv
Acknowledgments     xxi
About the Authors     xxiii

Chapter 1: Getting Started     1

Beyond JUnit 3     3
JUnit 4     7
Designing for Testability     8
TestNG     17
Conclusion     21

Chapter 2: Testing Design Patterns     23

Testing for Failures     23
Factories     34
Data-Driven Testing     39
Asynchronous Testing     67
Testing Multithreaded Code     71
Performance Testing     83
Mocks and Stubs     90
Dependent Testing     103
Inheritance and Annotation Scopes     113
Test Groups     119
Code Coverage     132
Conclusion     150

Chapter 3: Enterprise Testing     153

A Typical Enterprise Scenario     154
A Concrete Example     157
Test Implementation     160
Exploring the Competing Consumers Pattern     182
The Role of Refactoring     186
Conclusion     194

Chapter 4: Java EE Testing     197

In-Container versus Out-of-Container Testing     198
In-Container Testing     200
Java Naming and Directory Interface (JNDI)     207
Java Database Connectivity (JDBC)     210
Java Transaction API (JTA)     215
Java Messaging Service (JMS)     219
Java Persistence API (JPA)     225
Enterprise Java Beans 3.0 (EJB3)     236
Java API for XML Web Services (JAX-WS)     246
Servlets     255
XML     262
Conclusion     266

Chapter 5: Integration     269

Guice     280
DbUnit     295
HtmlUnit     303
Selenium     310
Swing UI Testing     312
Tests for Painting Code     316
Continuous Integration     320
Conclusion     322

Chapter 6: Extending TestNG     325

The TestNG API     325
BeanShell     335
Method Selectors     341
Annotation Transformers     346
Reports     355
Writing Custom Annotations     366
Conclusion     375

Chapter 7: Digressions     377

Motivation     377
The TestNG Philosophy     378
The Care and Feeding of Exceptionsv378
Stateful Tests     382
The Pitfalls of Test-Driven Development     385
Testing Private Methods     388
Testing versus Encapsulation     391
The Power of Debuggers     392
Logging Best Practices     394vThe Value of Time     397
Conclusion     399

Appendix A: IDE Integration     401

Eclipse     401
IntelliJ IDEA     411

Appendix B: TestNG Javadocs     421

JDK 1.4 and JDK 5     421
Shortcut Syntax for JDK 5 Annotations     423
Annotation Javadocs     423
The org.testng.TestNG Class     428
The XML API     432

Appendix C: testng.xml     435

Overview     436
Scopes     437
XML Tags     437

Appendix D: Migrating from JUnit     449

JUnitConverter     449
Integrated Development Environments     453
Incremental Migration and JUnit Mode     455
Converting JUnit Code     456

Index     471