Test Automation Tools - TestNG Vs JUnit

Test Automation Tools - TestNG Vs JUnit
12 min read
27 July 2022

TestNG and JUnit are pair of really preferred terms communicated amongst the testers, simply since they are used quite highly in the community. Given that each of these is a unit testing structure, a far better comprehensive analysis of TestNG vs JUnit will absolutely help in opting for a far better testing structure in order to run Selenium IDE tests on cloud.

One more really good reason for going by means of these distinctions is for the fellow pupils and experts who have certainly not tried their hands on any sort of system screening framework as well as are putting their primary step in the very same area. In addition, a much better understanding of unit screening will help create a good groundwork of these structures. Along with all this said the following permits observe our index for this blog.

  • What is Unit Testing?

  • What is the JUnit framework?

  • What is the TestNG structure?

  • Variation in between TestNG and also JUnit.

  • What is Unit Testing?

Prior to beginning along with the variations in between TestNG and JUnit, our experts should recognize what is indicated by system screening in concise. The phrase "device" is used really commonly in 2 significant areas: maths and also budgeting. In mathematics, the device suggests "1 *" like I took a trip a unit span from my property, etc.

Unit screening indicates examining the littlest part of code that is sensible and also segregated. If unit screening takes place on non-isolating terms, in that case, the test will fail.

What is JUnit Framework?

JUnit is a testing framework written in Java. JUnit is used for unit testing in Java and gets its name from the combination of Java + Unit testing. JUnit is used quite extensively with the Selenium web driver for writing web automation tests.

JUnit platform is actually a Java framework that is largely used for testing. It supports the test to run through creating as well as assessing along. JUnit framework was initially located on the SUnit platform which is actually utilized for Unit testing but after that later it was upgraded along with Java making use of Selenium WebDriver. JUnit is currently used as a requirement when teams need to carry out screening procedures in Java.

Attributes of JUnit testing platform:

  • JUnit carries out not assist working parallel test concurrently.

  • JUnit framework was actually upgraded to Java 8.

  • It assists to obtain test-driven programs while composing code.

  • JUnit is actually sustained by numerous languages right now.

JUnit structure is a Java structure that is commonly utilized for testing. JUnit platform was originally based on the SUnit framework, which is makes use of Unit testing. The platform was eventually upgraded with Java using Selenium WebDriver. TestNG is additionally a Java framework that facilitates to perform software application tests in Java.

What is TestNG Framework?

The TestNG platform was discharged after JUnit; and it as well as performed the same objective together with some additional functionalities. In addition, the TestNG framework is utilized for screening, and it is created in Java for the Java shows language.

JUnit, as well as NUnit frameworks encouraged the TestNG framework and deal with a vast area in screening. Moreover, the TestNG framework executes system screening, end-to-end screening, integration testing, and so on. The testNG structure is really powerful. In addition, you can visit our full dealing with all the components of TestNG alongside efficient examples in Selenium.

TestNG is additionally a Java platform that assists in carrying out program examinations in Java. It is a framework that manages the tests in training class. It makes training classes for corresponding tests, and then subsequently processes them all.

TestNG is actually an enhanced structure that conquers limits found in JUnit. It is also additionally taken into consideration as a versatile resource to executes exams, as it makes use of the exact same classes to run its own exams and takes care of threads to manage methods which makes overall performance of the checking tests quickly.

Attributes of TestNG testing structure:

  • TestNG can easily put examination techniques in Java teams

  • It refines Unit exams with passing guidelines into the test strategies

  • Creating use of Threads improves screening performance much better as implementation opportunity is actually lessened here

  • One of the limitations of JUnit is it relapses while it supports execution of analogue examinations

TestNG vs JUnit

TestNG can assist in putting test methods to Java groups, which means it can process Unit tests with passing parameters into test methods. While TestNG makes use of Threads, it enhances testing performance. This happens as execution time is significantly reduced. One of the limitations of JUnit also overcomes here, as it supports execution of parallel tests.

JUnit, however, developed the idea of first testing. The JUnit procedure helps in increasing productivity and stability of program code and it also reduces the time for debugging.

Comments In JUnit as well as TestNG

Both TestNG and also JUnit apply comments, as well as they work truly similarly in both of all of them. Nonetheless, there is a slight variation between the name of a few of the notes, however their working continues to be the exact same. Consequently, the complying with dining table evaluations the TestNG vs JUnit in regards to notes and also will help you examine the annotation differences.

Test Suite in JUnit and also TestNG

An exam collection is a selection of examinations in TestNG and also JUnit, which may implement at the same time. Before JUnit 5, the exam collection component was not sustained in JUnit, although it obtained offered subsequently. Alternatively, TestNG regularly geared up with test sets. Although both of them may operate the examinations utilizing exam sets, just how they do this is slightly different. Below-given code snippets help analyse TestNG vs JUnit in terms of running a test suite.

In TestNG, teams manage the test suites coming from the XML report. While in JUnit, teams utilize the comments @RunWith as well as @Suite to manage a test suite. While dealing with TestNG, it is easier, and also the specialist gets more alternatives to work along with the examination sets, and testers can run suites after bundling the classes into groups.

Overlook Test in JUnit and TestNG

The ignore test feature implies whether the framework needs to ignore the test during the course of implementation or otherwise. Each TestNG as well as JUnit have this attribute, however the affirmation is various. Consequently, the observing given code fragment will certainly assist you examine TestNG vs JUnit in relations to overlooking an examination.

In TestNG, experts make use of @Test (enabled = untrue) to disregard an examination. In JUnit, experts utilize @ignore to neglect the examinations.

Team Test in JUnit and TestNG

Team examination means executing the activities on a group of tests altogether. It comes and is a new feature with TestNG merely. With group tests, the tester can easily make numerous teams with each group containing a number of examinations in them. In addition, the tester can at that point implement the exam in a singular group instead of different tests. TestNG permits teams to declare inside the XML report.

Parameterized Test in JUnit and also TestNG

Parameterized examinations mean operating an examination scenario through feeding various market values at each execution. These exams are helpful in data-driven testing and also decrease the code span to a really good level. Each JUnit and TestNG contains the perk of parameterized screening but in a somewhat different way, by virtue of parameterized screening by means of TestNG an extra natural way reviewed to JUnit.

JUnit is a mixture of @RunWith and also @Parameters to generate a 2-D checklist of things which nourish in to the @Test strategy for parameterized screening.

Dependent Tests in JUnit and TestNG

JUnit in the current scenarios does not support dependent tests, while TestNG does. One of the main reasons for this drawback is that the development of TestNG was carried out for a wider variety of test types, unlike JUnit, which supports only unit testing.

Matching Test Execution in JUnit and TestNG

The matching test completion manages the exams parallelly, i.e., operating lots of examinations simultaneously as well as none by one sequentially. Furthermore, Parallel screening likewise makes it possible for the implementation of a solitary test yet different circumstances simultaneously. Currently, JUnit does not assist identical completion of exams, yet TestNG performs. In TestNG, a specialist may appoint the thread value in the XML data and run the exams parallelly.

Neighbourhood Support for JUnit and also TestNG

The community assistance is directly symmetrical to the 2 elements: the appeal of the program and the time ran out considering that its own release. JUnit as well as TestNG are both prominent frameworks, and consequently they both stand up shoulder to shoulder in attraction. Junit, also happens to leap the second parameter as it was born before TestNG.

The additional extended background connected with JUnit has generated incredibly wide as well as strong neighbourhood help along with a vast individual bottom. In addition, it is easy to find a solution to any concern pertaining to the JUnit platform due to the fact that of area assistance.

Despite the fact that TestNG drops small listed here, that carries out not suggest it has a weak help or even user bottom. TestNG possesses a robust area and an increasing individual bottom along with the superb backing for newbies and also qualifier’s queries. After comparing TestNG to JUnit, we got to know that it has some catching up to do.


In the end, we all know TestNG and JUnit are the two most popular frameworks used in the testing world. TestNG was created to overcome JUnit drawbacks and to fulfilling current testers' requirements. Both of these testing frameworks are particularly used for Unit Testing procedures. TestNG is an inspiration of JUnit, so in a significant way these are also similar. Just to list, TestNG comes added with additional functionalities which makes it more powerful than Junit at an overall level.

In this tutorial about TestNG vs JUnit, I have tried to explain the difference between TestNG and JUnit. To tell the difference between the TestNG and JUnit frameworks, I have compared the features of these two frameworks. So, now I hope your mind is clear to choose the best framework.

While JUnit 4 has many limitations in exam scenario management, JUnit 5 tried to overcome those as well as additionally added new functions in the method. Though there is a distinction between JUnit and TestNG regarding notes, yet both the frameworks are equally qualified for usage in automated UI testing.

You can learn more about Automation Testing at LambdaTest, and even schedule a free testing environment, as per your needs. Alternatively, as a guided walkthrough you can also schedule a free demo by filling in the form.

Alex 10539
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