Difference Between JUnit and TestNG (With Table)

There is no code without error because we humans create errors or mistakes. There should be done proper testing of a code before running it for a good and error-free program. There are so many tools for testing or checking programs that can be downloaded from the internet or can run the code to their online platform for checking.

JUnit and TestNG are such platforms where one can do line-wise checking of their program, or checking can be done section-wise. These platforms help us to write an error-free program without wasting much time. Before making any software or application, there should be section-wise testing.

JUnit vs TestNG

The difference between JUnit and TestNG is that JUnit is a platform for section-wise checking of code written in java, and it is an open-source platform. Whereas TestNG is not an open-source platform, and TestNG has more tools for testing purposes than JUnit.

JUnit is a tool that performs section-wise or unit testing in programs. Unit testing is a method of checking errors in a program section-wise which means small parts of a program are checked accordingly. It is a java framework that does the testing in a java programming language.

TestNG is another java framework testing tool that does program testing section-wise. TestNG platform was made by Cedric Beust. It is not an open-source tool which means changes cannot be made in this tool. So many types of testing can be done in TestNG, like integration testing, unit testing, etc.

Comparison Table Between JUnit and TestNG

Parameters of ComparisonJUnitTestNG
DefinitionJUnit is a tool that performs section-wise or unit testing in java programs. It is a Java framework.TestNG is another java framework testing tool that does program testing section-wise.
Created by It was created by Kent Beck and Erich Gamma.Its creator is Cedric Beust.
Operating system It is a cross-platform tool that means it can work on different operating platforms.It is also a cross-platform tool and can work on different operating systems.
Parallel testingSimultaneous or parallel testing is not supported by JUnit.Simultaneous testing is fully supported by TestNG.
AnnotationIt Does not assist annotation of a higher level, but in higher versions, this feature is supported.It assists all types of annotation, and it is flexible with all types.
Dependency It does not contain a dependency checking feature.It includes dependency checking or testing.
EasinessWorking with JUnit is not that much easy, and dependency is needed.Working with TestNG is easy, and configuration is also easy.

What is JUnit?

JUnit platforms help us to check our code unit-wise. This tool can work on any type of operating system that is platform-independent. It is a java framework that does testing on programs that are written in java language. Kent Beck and Erich Gamma are the creators of this platform.

JUnit has so many versions, and it has become more advanced. And because it is an open-source testing tool, so many changes can be made to it, and more features can be added. Simultaneous test running is not supported by the JUnit testing tool.

JUnit is a basic and recommend tool when it comes to testing programs that are written in java language. Annotation of higher level is not assisted by this tool. But the higher version of JUnit can assist advanced annotation. Testing can be done while writing the code.

What is TestNG?

TestNG is more preferred than JUnit because of its flexibility to new languages and ease of usage. It was created by Cedric Beust. It is also a java framework. Integration testing, Unit testing, and many more testing are supported by this tool. It is more flexible and dependable as compared to the JUnit testing tool.

TestNG supports a higher level of annotation, which makes it a more usable tool. It is more powerful than the JUnit platform. It wins over the drawbacks of the JUnit testing tool by doing parallel or simultaneous testing of a program. It creates multiple instances of the same test class.

TestNG saves the time of a developer by making the same class run multiple times of different codes. Dependency checking can be done easily in this tool. A test that has errors are ignored during execution, and if the test is taking more time than required, then the test is automatically discarded.

Main Differences Between JUnit and TestNG

  1. In JUnit, Simultaneous or parallel testing is not supported. While simultaneous or parallel testing can be done using TestNG, which saves more time for a programmer in the rectification of the code.
  2. Higher level of annotation is not supported by JUnit Whereas all type of annotation is supported by TestNG platform that is why it is the more preferred tool.
  3. In comparison to the JUnit tool, the TestNG platform is more flexible and reliable as all types of plugins are available in it with various types of advances features.
  4. Cedric Beust created TestNG, while JUnit is created by Kent Beck and Erich Gamma.
  5. TestNG saves the time of a developer by making the same class run multiple times of different codes. But classes cannot be the same in JUnit for different tests conducted.

Conclusion

There are so many tools that make a developer work easy, and error-free programs can be generated without wasting much time in the rectification process. JUnit and TestNG are among those tools. Both are Java frameworks. TestNG is more preferred because of its flexibility, but when it comes to basic testing in the java language, JUnit is recommended. But JUnit is increasing its features in its higher versions.

TestNG is loaded with advanced features and supports all types of plugins, but it is not an open-source platform. While JUnit is an open-source platform but does not support many plugins and comes with fewer features than the TestNG platform. TestNG saves the time of a developer by making the same class run multiple times of different codes. But classes cannot be the same in JUnit for different tests conducted.

References

  1. https://ieeexplore.ieee.org/abstract/document/1383111/
  2. https://books.google.com/books?hl=en&lr=&id=bCvcMcLZwV4C&oi=fnd&pg=PT14&dq=testNG+testing&ots=86DCpNSPmB&sig=gBe875fBk44zyvD3ZNB8h5KUj9w
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