If a few of you pondering, why a programmer ought to deal with automation testing then let me inform you that the significance of automation testing is rising exponentially resulting from extra consciousness and the emergence of DevOps.
Corporations usually favor programmers who’re good at writing unit checks and present good data of varied unit testing frameworks, libraries, and instruments like JUnit, Selenium, REST-Assured, Spock framework, and so forth.
As a Java developer, we work in very totally different areas, ranging from writing core Java code to creating JSP pages, writing REST APIs, and typically even creating Groovy scripts for construct automation. That is why we additionally want to pay attention to totally different instruments we are able to use to automate testing of various Java stuff.
For instance, I solely knew JUnit for a very long time however after I needed to check my JSP pages, I used to be clueless till I discovered Selenium. The identical goes for REST Assured as a result of I often check my REST API utilizing the curl command, however REST Assured library takes the unit testing of REST APIs to a different degree.
10 Important Unit and Integration Testing instruments for Java Programmers
Since I consider, a programmer is nearly as good as their instruments, I at all times attempt to study and discover new instruments and libraries in my free time and this checklist is a part of that analysis.
On this article, I’m going to share 10 of the very best and important instruments, frameworks, and libraries that may assist Java builders writing unit checks and integration checks on their varied Java tasks.
1. JUnit
I do not assume JUnit wants any introduction. Even in case you are a newbie Java programmer, you may need heard about it. It means that you can write unit checks on your Java code.
Nearly all main IDEs like Eclipse, NetBeans, and IntelliJIDEA present JUnit integration which suggests you may each write and run the unit check proper from these IDE.
Most of us are nonetheless utilizing JUnit 4 however JUnit 5 is already launched and possibly the following factor to have a look at this 12 months. You should use JUnit for each unit and integration testing and it additionally helps Java 8 options.
Btw, in case you are fully new within the unit testing world, notably in Java unit testing then this Be taught Java Unit Testing with Junit & Mockito in 30 Steps course on Udemy is an efficient start line. You should buy in simply $10 on Udemy sale.
2. Mockito
There are lots of mocking frameworks for Java courses like PowerMock, JMock however I personally like Mockito for its easy API, nice documentation, and a whole lot of examples.
Mocking is among the important methods of modern-day unit testing, because it means that you can check your code in isolation with none dependency and that is why I encourage each Java developer to study a mocking framework together with JUnit.
My favourite mocking framework is Mockito however should you like you can even discover PowerMock or JMock.
In the event you select to stay with Mockito and resolve to study this framework then this JUnit and Mockito Crash Course on Udemy is an efficient course to begin with.
3. REST Assured
Testing and validating REST providers in Java is tougher than in dynamic languages corresponding to Groovy. REST Assured brings the simplicity of utilizing these languages into the Java area. It is an excellent device for REST API integration checks.
If you’re critical about writing an integration check on your REST API, then you should study the REST Assured and REST API Testing Automation: through REST Assured & HTTP Shopper course on Udemy is an efficient place to begin with, I’ve already joined this course and can put a while apart to study this device in 2023.
It covers many features of REST API testing like Automated REST API Testing utilizing Relaxation Assured Java and RESTful net service Testing through POSTMAN and HTTP Shopper.
4. Selenium
Selenium might be the most well-liked device for Java UI testing, which lets you check your JSP pages with out launching them in a browser.
You may check your net utility UI utilizing JUnit and Selenium. It even means that you can write net utility acceptance checks.
In the event you resolve to study Selenium for unit testing your code then you may be part of its device, it’s in all probability the very best useful resource to begin with.
5. TestNG
TestNG is a testing framework impressed by JUnit and NUnit however introducing many new functionalities that make it extra highly effective and simpler to make use of, corresponding to annotations, Working your checks in arbitrarily massive thread swimming pools with varied insurance policies accessible (all strategies in their very own thread, one thread per check class, and so forth).
The hole between JUnit and TestNG has decreased due to utilizing annotations from JUnit 4 and integrating the Hamcrest matchers as effectively but it surely’s as much as you.
In the event you resolve to study TestNG for unit testing your Java code then TestNG Full Bootcamp For Newbies – Novice To Ninja is an efficient course to begin with.
It gives step-by-step information for studying TestNG Framework (Subsequent Era) to hurry up your automation objectives
![Top 10 Testing Tools and Libraries for Java Developers [UPDATED]](https://4.bp.blogspot.com/-VYJLUIuNRTM/Wmv_kw41g5I/AAAAAAAAKUQ/fqpCzRFli2IEaz2GXP2ymV5s-EwhXV6XgCLcBGAs/w400-h270/TestNG%2Bframework.png)
6. Spock Framework
Spock is one other testing and specification framework for Java and Groovy functions. It is written in Groovy which makes it very expressive and to the purpose specification language.
Whenever you use Spock, your check will grow to be extra readable and simpler to keep up, and because of its JUnit runner, Spock is appropriate with most IDEs, construct instruments, and steady integration servers.
Sadly, I did not discover a helpful course to study the Spock framework however Java Testing with Spock ebook is an efficient useful resource to begin with.
7. Cucumber
Cucumber merges specification and check documentation into one cohesive entire residing documentation and since they are going to be routinely examined by Cucumber, your specs are at all times banged up-to-date.
If you wish to construct a begin to end net automation testing framework and simulate person conduct on an online utility then Selenium WebDriver with Java & Cucumber BDD is an efficient course to each study and implement Cucumber in your challenge.
8. Spring Take a look at
Spring MVC comes with a really helpful check framework, which permits doing in-depth testing with out even beginning an online container.
It is among the most helpful libraries for writing automated checks for Spring functions. It gives first-class assist for writing unit and integration checks to Spring-powered functions together with MVC controllers.
There may be additionally a Spring Take a look at DbUnit that integrates the Spring Take a look at framework with DbUnit and a Spring Take a look at MVC HtmlUnit which integrates the Spring Take a look at MVC framework with HtmlUnit.
Through the use of these instruments you may simply check your Spring MVC utility in an automatic means.
9. DBUnit
A database is an integral a part of many Java functions, each Core Java, and Internet utility, and possibly the largest impediment whereas doing unit testing.
It is not dependable to connect with Dev or UAT database for integration checks as a result of anybody can change the info and schema like tables, saved procedures and it’ll trigger your automated integration check to fail.
DbUnit is a JUnit extension that can be utilized to initialize the database right into a recognized state earlier than every integration check and make sure that the database accommodates the proper knowledge.
DbUnit has its personal points, however it’s a very great tool as a result of it helps us to separate the check knowledge creation from the examined code.
10. Robotic Framework
The Robotic Framework is a python primarily based, generic check automation framework for acceptance testing and acceptance test-driven growth.
It’s a keyword-driven testing framework that makes use of tabular check knowledge syntax. You should use it to check distributed, heterogeneous functions, the place verification requires touching a number of applied sciences and interfaces.
In the event you resolve to study this excellent framework for integration checks then Udemy’s Robotic Framework Take a look at Automation is a superb useful resource to begin with. It is a two-part course that covers the fundamental and superior options of the Robotic framework.
11. Postman
That is one other helpful testing device for Java builders, notably for full-stack java builders who’re creating each frontend and writing APIs on the backend. Postman means that you can instantly name your API and analyze the response.
For instance, you can not solely test, in case your API calls are working or not but additionally you may look at response headers and error codes. Equally, whereas sending requests you may set headers and question parameters which makes working with APIs a lot simpler.
And, right here is the abstract and some extra testing instruments for Java builders, this consists of instruments that check from object to interface degree together with efficiency and different benchmarks.
