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What is TestNG

TestNG- A  testing framework which is inspired from JUnit and NUnit . But it also introduces 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.