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Advantages and disadvantages of automated testing
In 2025, software development companies cannot afford to compromise on quality and speed, which is especially true for such a laborious and time-consuming process as testing. That is why multiple companies have switched to test automation.
Although we cannot always use automated testing as a one-size-fits-all solution, it is rather important for long-term, complex projects. In this article, we will find out what kind of testing is called ‘automated’ and what its major advantages and disadvantages are.
What is automated testing?
Automated testing is a software testing method performed by using special software tools that execute a set of test cases. Some types of testing — load and stress — involve automation by default. For example, automation makes it possible to simulate a high load that is close to the real situation, which is quite difficult or even impossible to do manually.
Benefits of automated testing
Importance and advantages of automated testing
Below we have chosen the top 8 benefits that automated testing has to offer. The list may be completed by more specific advantages taking into account particular domains, companies and the software they develop.
Automated regression testing. Regression testing ensures that code changes do not negatively impact the previously developed functionality of the solution. Regression testing also guarantees that the app works well with fixed bugs, new features, and improvements. As it is time-consuming and repetitive by nature, it can be more effective to turn to automation while performing it. Regression testing automation frees up QA engineers allowing them to focus on writing test cases for new functionality and/or other vital tasks.
Test execution speed. Software quality assurance engineers are often forced to shorten testing time to ensure a product is released on schedule. Test automation does not require human intervention. It can be performed at any time when the environment is available for testing and this is usually the time when it is not used by QA specialists. There are various ways to make automated testing faster, such as parallel test execution, test segregation, and headless test execution. Faster speed of automated testing is also relevant for Data Driven Tests (DDT) when the same checks are run many times with different datasets.
Flexible test settings. Automation allows setting any schedule and notifications as well as creating quick reports.
Scale. Automation imitates the actions of a large number of users.
Cost savings. Automated tests significantly reduce testing costs if implemented wisely. They are cheaper than manual tests in the long run. Although the initial implementation of automation testing may be costly, it will pay off in the end.
Disadvantages of automated testing
The list of disadvantages of automation testing
Despite a bundle of benefits of automated testing, it has its disadvantages.
- The need to keep autotests up to date. If some changes are made to the application, they must be displayed in autotests, which leads to extra expenses.
- Some tasks cannot be automated, for instance, installation testing, usability, and layout testing.
- Some bugs that are not provided by the autotest cannot be detected. During manual testing, QA engineers also check additional scenarios prompted by their intuition and experience but not described in test cases. As a result, manual testing involves more cases being tested.
- More expenses on the professionals and toolkit. The QA automation engineer is a programmer (or at least has some programmer skills), which means that this specialist costs more. And the price of testing tools is also worth considering.
Conclusion
Automated and manual testing are not mutually exclusive. Quite the opposite, they successfully complement each other helping achieve the high quality of software. It is the team leader who needs to find the optimal balance between manual and automated testing in each individual case, taking into account the technical features of the project and team capabilities.
Ready to outsource QA services? Our team of seasoned QA engineers is here to help your solution work as intended.
F.A.Q. about automated testing
Whether automated testing is better than manual testing depends on the context and the specific needs of a software development project. The choice between automated and manual testing should be based on various factors.
Automated testing relies on scripts and software tools to execute predefined test cases quickly and consistently, suitable for repetitive and regression testing. Manual testing involves human testers who interact with the software, applying subjective judgment and exploratory skills, making it better for usability, visual, and exploratory testing. Automated testing is efficient but requires upfront investment, while manual testing is adaptable but slower and labor-intensive.
Test automation is essential for projects with frequent code changes, large-scale applications, and those following continuous integration/continuous deployment (CI/CD) practices. It’s crucial for regression testing to ensure new updates don’t break existing functionality. Projects requiring performance and load testing also benefit from automation to simulate concurrent user interactions. In general, test automation enhances efficiency, repeatability, and accuracy, making it valuable for many software development projects.
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