11 most common software testing mistakes and how to avoid them

Software testing plays a key role in ensuring product quality and reliability. However, even the most experienced IT testers and project managers make mistakes that can damage the quality assurance process.

In this article, we’ll cover the most common but easily avoidable software testing mistakes that many people encounter. We will also explore strategies to avoid these pitfalls.

Error no. 1: Lack of clear testing objectives

One of the most severe mistakes in software testing is not setting clear and well-defined testing objectives. Testing goals are a roadmap of your testing efforts, outlining what you want to achieve and how you want to get there. If you skip this crucial step or don’t pay enough attention to it, it can lead to a cascade of problems throughout the testing process.

How to avoid this mistake:

  • Collaboration: work with stakeholders, developers, and other team members to clearly define and document testing objectives.
  • Documentation: document objectives in a clear, concise and measurable way. If possible, use specific metrics.
  • Review and feedback: Regularly review goals and get feedback from the team to ensure alignment with project goals.

By addressing this common mistake and setting clear testing goals from the start, you’ll establish a solid foundation for effective testing, ensuring that your efforts contribute significantly to the overall quality of your software product.

Error no. 2: Neglect of test data quality

The second major mistake in software testing is the frequent neglect of the quality of test data. Test data is the foundation of all testing and its quality can have a major impact on the accuracy and efficiency of your tests.

How to avoid this mistake:

  • Data Generation Tools: use data generation tools to create diverse and relevant test data sets.
  • Data obfuscation: implement data masking or anonymization techniques to protect sensitive information.
  • Refresh data: refresh your test data regularly to ensure it’s up-to-date with the latest changes to your app.
  • Validation: verify that the test data accurately represent real-world scenarios and expected outcomes.

By addressing this bug and prioritizing the quality of your test data, you can significantly increase the efficiency and reliability of your testing efforts, which will ultimately contribute to the overall success of your projects and software testing.

Error no. 3: Insufficient test coverage

A third common mistake in software testing is not achieving sufficient test coverage. Comprehensive test coverage is essential to identify a wide range of issues and ensure the overall quality of the software.

How to avoid this mistake:

  • Requirements Analysis: thoroughly analyze the project requirements to identify critical areas that require extensive testing.
  • Test planning: create a comprehensive test plan that outlines scenarios, goals and testing priorities.
  • Risk-based testing: prioritise your testing based on potential risks and business impact.
  • Automation: implement test automation to efficiently cover a wide range of scenarios, including regression testing.

Comprehensive test coverage is essential to identify a wide range of issues and ensure the overall quality of the software.

By addressing the problem of poor test coverage, you can increase the efficiency of your testing efforts and provide greater confidence in the reliability and quality of your software. This proactive approach contributes significantly to the success of your software testing efforts.

Error no. 4: Ignoring regression testing

The fourth critical mistake in software testing is neglecting regression testing. This procedure ensures that new changes or updates to the software do not unintentionally introduce new bugs or disrupt existing functionality.

How to avoid this mistake:

  • Automate where appropriate: identify and automate repetitive and critical test cases to ensure efficient and consistent regression testing.
  • Test suite maintenance: regularly update and expand regression test suites to keep them in line with software changes and evolving requirements.
  • Continuous Integration: implement regression testing as part of continuous integration and continuous delivery(CI CD) to catch problems early.
  • Prioritisation: prioritise regression tests based on risk, criticality and areas likely to be affected by changes.

By addressing the mistake of ignoring regression testing, you can proactively protect the stability and quality of your software during development and ensure that new updates and modifications don’t compromise existing functionality. This approach contributes significantly to the overall success of your software testing efforts.

Error no. 5: Poor communication with development teams

The fifth major mistake in software testing is the lack of communication with development teams. Effective collaboration between testers and developers is essential for effective problem identification and resolution.

How to avoid this mistake:

  • Regular meetings: Schedule regular meetings or stand-ups between the test and development teams to discuss progress and issues.
  • Detailed bug reporting: provide comprehensive bug reports with clear steps to reproduce problems, expected behavior, and observed results.
  • Documentation: maintain common documentation such as requirements and test plans to ensure everyone is on the same page.
  • Collaboration tools: use collaboration tools and platforms to facilitate communication, share updates and track issues.

By addressing the flaw of poor communication with development teams, you can support a collaborative environment that streamlines problem solving and ensures that testers and developers work together effectively to deliver high-quality software. This collaborative approach contributes significantly to the overall success of your joint software testing efforts.

Error no. 6: Focusing solely on functional testing

A sixth common mistake in software testing is to focus solely on functional testing and neglect the non-functional aspects of the software.

How to avoid this mistake:

  • Comprehensive Testing Strategy: develop a comprehensive testing strategy, including non-functional and functional testing.
  • Performance testing: assess the software’s performance under different loads and conditions to identify and eliminate software bottlenecks.
  • Usability Testing: perform testing of the software’s user interface and overall user experience to ensure that the software meets usability standards.
  • Security testing: perform security testing, including vulnerability scanning and penetration testing, to identify and mitigate security risks.

By removing the error of focusing exclusively on functional testing, you get a more comprehensive approach to testing that includes non-functional aspects. This comprehensive approach enhances the overall quality and reliability of the software, thus contributing significantly to the success of software testing.

Error no. 7: Incorrect documentation of test cases

The seventh mistake in software testing is incorrect documentation of test cases. Inappropriate documentation of test cases can lead to confusion, inefficiency, and lack of traceability in the testing process.

How to avoid this mistake:

  • Standardized templates: use standardized templates to document test cases that include fields for assumptions, test steps, expected results, and actual results.
  • Version control: keep your test case documentation under version control to ensure it is up to date.
  • Regular reviews: perform regular reviews of test case documentation to identify and correct any deficiencies or inaccuracies.
  • Training: ensure team members are trained on proper test case documentation procedures.

Inappropriate documentation of test cases can lead to confusion, inefficiency, and lack of traceability in the testing process.

By eliminating the mistake of improperly documenting test cases, you will create a solid foundation for efficient testing processes. Well documented test cases improve communication and maintain consistency in the testing process.

Error no. 8: Not testing on multiple platforms

The eighth software testing mistake that QA testers make is not testing software on multiple platforms, such as different operating systems, browsers, and devices. This can lead to platform-specific issues being overlooked.

How to avoid this mistake:

  • Identification of all platforms: the first step is to identify all relevant platforms on which the software will be used. This can include different operating systems, browsers, devices and more.
  • Create test scenarios for each platform. Once the relevant platforms have been identified, test scenarios need to be created for each of them. These scenarios should cover all key functions and features of the software.
  • Create a team of test engineers who have access to different platforms.
  • Use test automation to accelerate cross-platform testing.

Error no. 9: Insufficient tracking and reporting of errors

Poorly managed software bug tracking can lead to communication breakdowns and unresolved issues.

How to avoid this mistake


  • Use a bug tracking system: a bug tracking system is essential to effectively track and resolve bugs. The bug tracking system should be able to record, prioritise and monitor the status of bugs.
  • Provide clear and detailed bug reports: the bug report should be clear and detailed enough for developers to quickly and easily understand and resolve it. The error message should contain the following information:
    • error description,
    • steps to reproduce the error,
    • expected behaviour,
    • actual behavior.
  • Communicate bugs: it is important to communicate bugs to all stakeholders, including developers, other testers and managers. This will help ensure that errors are dealt with in an efficient manner.

Error no. 10: Failure to adapt to change

Failure to adjust testing strategies when project requirements change can result in test cases being out of date.

How to avoid this mistake


  • Be flexible and use an agile approach to testing. Understand that project requirements may change and be prepared to adapt to those changes. This means being open to new ideas and being willing to change your test cases and plans if necessary.
  • Update test cases and plans as project requirements evolve. When project requirements change, update your test cases and plans to reflect those changes.
  • Communicate with all stakeholders about changes in project requirements. Ensure that everyone involved in the testing process is informed of changes in project requirements.

Error no. 11: Not testing the app from the user’s perspective

Testing the app from the user’s perspective is key to ensuring a seamless user experience. Not testing an app from the user’s perspective can result in overlooking critical issues that can affect the user experience. Testers should ensure that the application is tested for usability, accessibility and user experience.

How to avoid this mistake:

  • Test the app for usability: make sure the app is easy to understand and use.
  • Test the app for accessibility: make sure the app is accessible for people with disabilities.
  • Test your app for user experience: Make sure the app is pleasant and useful to use.
  • Test the app in different environments: make sure the app works properly on different devices, operating systems and networks.
  • Test the app with different types of users. Make sure the app is suitable for different user groups, including users with different experiences, abilities and needs.

Software testing is a continuous process of improvement and learning from experience. It is important to note that even experienced IT testers and Business IT Consultants are not immune to some pitfalls. A well thought out and comprehensive testing strategy should be a key element. It is important to pay sufficient attention to requirements analysis and the creation of detailed test plans that take into account different possible scenarios. The implementation of automated tests by using automation testing tools and regular feedback between development and testing teams are other key elements in the fight against bugs and quality management.

About the author

Michaela Kojnoková

Agile Test Engineer

Po štúdiu informatiky na ŽU a TUKE som sa najviac ponorila do oblasti automatizácie testovania. Okrem toho sa venujem tvorbe webov, databázam, dátovej analytike, umelej inteligencii a strojovému učeniu. Mám rada cestovanie, šport a najviac si užívam čas strávený v prírode s mojimi blízkymi. LinkedIn

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