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:
- Annotations.
- Run your tests in arbitrarily big thread pools with various policies available (all methods in their own thread, one thread per test class, etc...).
- Test that your code is multithread safe.
- Flexible test configuration.
- Support for data-driven testing (with @DataProvider).
- Support for parameters.
- 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...
I started TestNG out of frustration for some JUnit deficiencies which I have documented on my weblog here and here Reading these entries might give you a better idea of the goal I am trying to achieve with TestNG. You can also check out a quick overview of the main features and an article describing a very concrete example where the combined use of several TestNG's features provides for a very intuitive and maintainable testing design.