Software is an engine that drives information tech today, and it is the work of software developers to come up with software that meets the expectations of users.
For tech reasons, it is not possible to instantly come up with any software because it has to undergo a particular process.
This process starts with analyzing the requirements followed by designing the software, writing the code, testing, deploying and maintaining the software. This is not an easy process, and developers need to spend time to come up with good software that will be pleasing to all stakeholders.
Software testing is a critical part of software lifecycle because developers get to know whether the code that they have written fulfills the requirements and pleases the stakeholders or not. It is from the results that the developer may be required to make additions or amendments depending on the needs of users or owners.
Software testing is done in stages that include unit, integration, system and acceptance testing. In all of these, unit testing is the most fundamental because the entire testing process has to start with it.
The smallest testable part of software is known as a unit. This unit can be a procedure, method, program, an operation or a function and unit testing involve isolating and exercising the various units of your code to ensure its validity. It is the first level of software testing that software developers do before integration testing. The purpose of unit testing is to ensure that each unit of the software is performing as designed.
Unit testing frameworks
The complexity of software tech is reduced by the various frameworks that are used to simplify the writing of unit tests. There are unit testing frameworks for every language with the main ones being JUnit for Java, PHPUnit for PHP, NUnit for .NET, py.test for Python and UnitTest++ for C++ among many others.
Manual vs. Automated unit testing
Unit testing can be done manually or automatically. With manual testing, you run each unit and compare it with the expected results to see if there is any defect. It is a tedious process that works well for small companies and short-term projects although it can bring out real user issues and offer greater visibility.
Automation is one of the most significant benefits of tech and in unit testing; there are automated tools that are designed to run tests. It is used on large projects because of the speed and efficiency that it offers.
Benefits of unit testing
Unit testing is important in finding and fixing problems in the early stages of software development. This means saving a lot of time that could have been used to fix problems that occur later during development. Not only time but also the cost of fixing such defects is less when it is done early in development. When you run unit tests, it validates the code and demonstrates its completeness which is very important in agile process.
Unit testing makes the development process faster and makes debugging easy because it allows for only the latest changes to be made whenever a test fails. The confidence of maintaining the code is increased when you do unit testing plus you can easily reuse the codes. Generally, unit testing improves the manageability of projects as it gives managers the visibility, control, efficiency and predictability of a project.
Every tech is designed and run by people, and in the world of software development, it is important to get things right all the way through. Being an area with high chances of errors, the best way to discover and correct problems early is through unit testing.