Learn unit testing with online courses and programs
What is unit testing?
Unit testing is a key step in the development process for new software. It involves testing each component in isolation to identify and fix errors. This process provides clarity by placing the focus on how a component functions, independently of the system it belongs to.Footnote 1
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What is the difference between unit testing and integration testing?
Unit testing is one of many types of testing performed during the early stages of software development. Some other common types include:
In the software development process, unit testing and integration testing sometimes go hand in hand. However, when looking at unit testing versus integration testing, these two steps actually serve opposing purposes.Footnote 2
Unit tests evaluate the function of individual components, while integration testing evaluates the functionality of a system containing many different components. One looks at the pieces, and the other looks at the whole.
Unit testing tutorial curriculum
A tutorial on this topic can cover the basic elements of unit testing as they relate to the language you are learning. For example, in a Java course, you would learn the purpose and framework of Java unit testing. Similarly, learners in a C++ course can expect to cover C++ unit testing frameworks and uses.
Beginner and intermediate unit testing curricula can cover the following:
An overview of unit testing
Testing frameworks & unit testing tools
Guidelines for how to write unit tests
Test-driven development guidelines
Unit testing automation
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Explore unit testing jobs
From hands-on developers to executive leadership roles with a technology focus, there are many job opportunities at all levels that utilize specialized skills in unit testing, including:
Software developer: Writes code to create a program or application. Developers use unit tests as a routine tool to proof their code and catch errors. Many developers have sub-specialties in specific programming languages, or with a specific tech stack. For example, a Python developer might learn Python unit testing.Footnote 3
Quality assurance engineer: Uses unit testing as a tool to evaluate and score software products, ensuring consistency and functionality.Footnote 4
Software architect: Oversees the planning and design of large software development projects. The architect might use unit testing methodology to ensure that their designs are testable.Footnote 5
Technical lead: Supervises a development team and oversees the entire development project. The technical lead will use unit testing to ensure that the code provided by each developer on the team is functional.Footnote 6
Completing a coding boot camp can be a great way to build skills you will need for technical roles such as a software developer, architect, engineer, or technical lead. However, the required skills and qualifications for each of these roles will vary based on the position and employer.
How to use unit testing in your career
Developers can use unit testing to improve the quality of their code and demonstrate proficiency in their job. The precise applications of unit testing depend on the programming language. This might include sub-specialties like:
Unit testing in C#
Python unit testing
C++ unit testing
So, what is unit testing in software engineering? It is a measure of quality assurance that helps improve the quality of programs and applications by providing a streamlined, efficient method of identifying small errors in the code so that the developer can quickly correct them.