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How Unit Testing Is Automated

woodjessica profile image Jessica Wood ・4 min read

Today almost every enterprise has realized the importance of automated software testing. To get bug-free and high-quality software organizations to test the software at each stage of the software development lifecycle.

Unit testing is one such type of software testing method that is performed in the initial stage of SDLC. It helps organizations to ensure that the software is bug-free and free from all possible defects. Let’s now try to understand this testing type in detail and let’s see how this test is automated.

What is unit testing?

It is the first step of the software testing lifecycle where individual units/components/modules of the software are tested in isolation. It helps to identify and fix system defects at the early stage of the software development lifecycle. Usually, this test is done by the developers in the early stage of the Software Development Lifecycle to remove any defects in the initial phase itself. In this, each unit of the system is isolated to identify, analyze, and fix the defect.

Why is unit testing required?

Below mentioned are some points that will help you to understand why this test is required:

This test validates the accuracy of the code by considering stubs, mock objects, drivers, and frameworks
This test helps the development teams to understand the code base, validate the correctness of the developed code, reuse the code, and make the changes faster in the code.
It helps developers and testers to save time as bugs are identified in the early stage and initial phase of software testing

What are the different types of Unit testing?

Below mentioned are the three types of unit tests that are listed below:

White Box Testing– It is a software testing technique wherein the internal structure, design, and coding of the software visible to the testers for testing. it is also known as Glass Box Testing, Transparent Box Testing, Open Box Testing.

Black Box Testing– It is also known as behavioral testing and is done to examine the functionality of the software applications. In this internal code structure, implementation details and internal paths are not known to the tester and hence it is called Black Box Testing.

Gray Box Testing– It is a combination of White Box Testing and Black Box Testing. It is done to search for possible defects that occur due to improper code structure or improper functioning usage of an application. In this technique, the tester has partial knowledge about the code structure.

How unit testing is automated?

To automate the unit test, businesses can leverage the below-mentioned testing tools or frameworks:

JUnit: It is an open-source test automation tool. It supports the concept of “first testing than coding”.This testing tool first tests the data and then inserts it into the piece of code. It is explicitly designed to support the Java language. This tool is well-known for providing an easy approach to writing code. It allows writing the test cases while developing the software. It is backed by all IDEs, including Eclipse, Netbeans, RAD, etc.

NUnit: This framework is completely written in C# and this belongs to the xUnit family. It is an open-source tool and is capable of supporting all .NET languages and serves the same purpose as JUnit. Annotations used in NUnit help to speed up the development & execution of tests as multiple input values can be executed for the test. It allows parallel execution of test cases.

TestNG: It is an open-source automation testing framework specifically designed for the Java Programming language. It supports concurrent testing along with support for annotation. It supports data-driven testing using data provider annotation. It provides parallel execution of test methods and allows assigning priority to test methods. It allows grouping of test methods into test groups.

Jtest: It is also known as Parasoft Jtest. This is an IDE plugin with effective open-source frameworks. The effective feature that can be achieved with this plugin is one-click action for creating, scaling, and maintaining unit tests. It helps testers to release quality software by making the process fast and reliable. It provides higher code coverage.

PHP Unit: This tool is for PHP programmers. It takes small components of code and tests them separately. It has pre-defined assertion methods that can be used by testers to assert that a system performs as expected. It helps in automating common web development tasks. It works with data very efficiently. This tool enhances the speed of the web development process and is easy to maintain and use.

Conclusion: Software testing plays a vital role in upholding the quality of software, Therefore it is advised to test the software from the initial stage of SDLC i.e. unit testing stage. The manual testing method is a bit risky as the chances of human-prone errors are high, therefore businesses prefer to automate the unit test with the help of automation testing tools.

To achieve error-free and effective testing of software modules businesses can also take some professional help. Leverage unit testing from a next-gen QA and independent software testing services provider to achieve high-quality software.

About the author: I am a technical content writer and I write articles on various IT-related topics. In this article, I have tried to share my views on how unit testing is automated.

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