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JUnit, TestNG
Mockito

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JUnit, TestNG, Mockito

JUnit is a unit testing framework for Java programming language. It plays a crucial role test-driven development, and is a family of unit testing frameworks collectively known as xUnit

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

Mocking is a way to test the functionality of a class in isolation. Mocking does not require a database connection or properties file read or file server read to test a functionality. Mock objects do the mocking of the real service.

We provide the following services

  • JUnit is an open source framework, which is used for writing and running tests.
  • Provides annotations to identify test methods.
  • JUnit tests can be run automatically and they check their own results and provide immediate feedback.
  • TestNG uses more Java and OO features.
  • JUnit integrates seamlessly with other testing tools and frameworks, such as Mockito for mocking dependencies, Selenium for web application testing, and Spring Test for testing Spring applications.
  • JUnit supports parameterized tests, allowing developers to run the same test method with different input values. This is useful for testing multiple scenarios or variations of a particular functionality.
  • JUnit provides a wide range of assertion methods to check expected results. These methods compare actual values with expected values and generate test failures if the assertions fail.
  • JUnit supports test suites, which are collections of related test classes. Test suites allow developers to group and execute multiple test classes together, providing a convenient way to organize and run tests.
  • TestNG supports testing integrated classes
  • TestNG support Dependent test methods, parallel testing, load testing, and partial failure.
  • Mockito does not need to write mock objects on your own.
  • Renaming interface method names or reordering parameters will not break the test code as Mocks are created at runtime.

Why do we use Junit, TestNG and Mockito?

JUnit allows the developer to incrementally build test suites to measure progress and detect unintended side effects. Tests can be run continuously. Using TestNG we can generate a proper report, and you can easily come to know how many test cases are passed, failed and skipped.

Mockito is used to mock interfaces so that a dummy functionality can be added to a mock interface that can be used in unit testing.

JUnit has become the de facto standard for unit testing in Java development due to its simplicity, robustness, and widespread adoption. It promotes the practice of test-driven development (TDD) and helps developers catch bugs early in the development cycle, leading to more reliable and maintainable code.