To illustrate the differences between JUnit and TestNG, let’s look at some code examples.įirst, let’s consider a simple JUnit test case: import org.junit. Any method detected to be a test method of a common testing framework, including JUnit and TestNG. JUnit, on the other hand, executes tests in the order they are defined in the test class. Test Ordering: TestNG allows for greater flexibility in test ordering, as tests can be executed in any order or even randomized. JUnit does not offer this functionality out of the box, but it can be achieved using custom code. JUnit does not provide this functionality out of the box, but it can be achieved using third-party libraries.ĭata-Driven Testing: TestNG provides built-in support for data-driven testing, allowing tests to be executed with different sets of data. However, TestNG provides a wider variety of annotations for test configuration, such as and Execution: TestNG provides built-in support for parallel test execution, allowing tests to be executed concurrently on multiple threads. TestNG also allows for greater flexibility in configuring tests, as it provides a variety of configuration options such as test dependencies, grouping, and parallel execution.Īnnotations: Both JUnit and TestNG use annotations to define test methods and test suites. Test Configuration: JUnit requires the use of a test runner to execute tests, while TestNG can be executed using the Java Virtual Machine (JVM) directly. While JUnit and TestNG share many similarities, they also have some notable differences, such as:
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