TestNG: Concepts, Methods and Examples

TestNG is a testing framework inspired from JUnit and NUnit but introducing some new functionalities that make it more powerful and easier to use, such as:

• JDK 5 Annotations (JDK 1.4 is also supported with JavaDoc annotations).
• Flexible test configuration.
• Support for data-driven testing (with @DataProvider).
• Support for parameters.
• Allows distribution of tests on slave machines.
• Powerful execution model (no more TestSuite).
• Supported by a variety of tools and plug-ins (Eclipse, IDEA, Maven, etc…).
• Embeds BeanShell for further flexibility.
• Default JDK functions for runtime and logging (no dependencies).
• Dependent methods for application server testing.

TestNG is designed to cover all categories of tests: unit, functional, end-to-end, integration, etc…

Unit Testing: Examples, Concepts and Frameworks

“Testing is the process of executing a program with the intent of finding errors” (Myers)
“Testing can show the presence of bugs, but not the absence” (Dijkstra)

A good test case is one that has a high probability of detecting an as yet undiscovered error or a successful test case is one that detects an as yet undiscovered error (Myers).