Last updated on 2024年4月17日

How do you prioritize regression testing when resources are limited?

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Regression testing is the process of verifying that existing functionality works as expected after changes are made to the software. It is essential for maintaining quality and preventing defects from reappearing in the released product. However, regression testing can also be time-consuming, costly, and challenging to manage, especially when resources are limited. How do you prioritize regression testing when resources are limited? Here are some tips to help you plan and execute regression testing effectively and efficiently.

本文章的要点总结

Prioritize by risk:

Assess the impact, criticality, and usage frequency to focus on high-risk areas first. This ensures major issues are caught early and core functionality remains stable.
Embrace automation:

Automate repetitive, stable tests to save time and improve coverage. This strategy allows for quicker feedback and efficient use of resources.

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1 Identify high-risk areas

The first step in prioritizing regression testing is to identify the high-risk areas of the software that are most likely to be affected by the changes or have the most impact on the user experience. You can use various criteria to assess the risk level, such as the complexity, frequency, and criticality of the functionality, the amount and type of changes made, the feedback from stakeholders and customers, and the history of defects and failures. By focusing on the high-risk areas, you can reduce the chances of missing major issues and ensure that the core functionality is stable and reliable.

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Sangita M.

Transforming businesses workflows and minimize operational costs through Multimodal Generative AI and Conversational AI solutions | BFSI | Customer Experience | Intelligent Chatbot | AI Agents
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When resources are limited, regression testing is prioritized based on factors such as the impact of changes, criticality of the functionality, frequency of use, and potential risks associated with regression issues.

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RISHIKESH KUMAR

Salesforce Community Group Leader Vaishali | Quality Assurance (QA) | Manual Tester | 2X Salesforce Certified | Mentor| Ex-NSS Group Leader & Campus Ambassador | Speaker |
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Consider the consequences: Look for areas with potential for severe outcomes, like financial loss, safety hazards, or reputational damage. Analyze historical data: Past incidents, accidents, or near misses can indicate high-risk areas. Follow best practices: Industry standards and regulations often highlight common high-risk areas. Think proactively: Identify areas vulnerable to changes, like new technologies or market trends.

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2 Use test automation

The second step in prioritizing regression testing is to use test automation as much as possible. Test automation can help you save time, effort, and resources by running regression tests faster, more frequently, and more consistently than manual testing. Test automation can also help you cover more scenarios, detect more defects, and provide more accurate and timely feedback. However, test automation is not a silver bullet, and you need to consider the cost, feasibility, and maintainability of creating and updating automated test scripts. You should automate the tests that are repetitive, stable, and have a high return on investment, while keeping some manual tests for the tests that are complex, exploratory, or require human judgment.

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RISHIKESH KUMAR

Salesforce Community Group Leader Vaishali | Quality Assurance (QA) | Manual Tester | 2X Salesforce Certified | Mentor| Ex-NSS Group Leader & Campus Ambassador | Speaker |
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Automate repetitive tasks: Free up your team's time by automating stable, frequently run tests. This lets them focus on more complex or high-risk areas. Increase test coverage: Automation allows you to run more tests in less time, improving overall regression test coverage. Faster feedback: Automated tests can provide quicker feedback on code changes, allowing for faster bug detection and resolution.

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3 Apply test prioritization techniques

The third step in prioritizing regression testing is to apply test prioritization techniques to select the most relevant and effective test cases for each cycle. These techniques can be based on factors such as test coverage, results, execution time, dependencies, and feedback. Examples of test prioritization techniques include test case selection, ordering, and clustering. Test case selection chooses a subset of test cases that cover the most important or affected functionality based on coverage or results; test case ordering arranges the test cases in a sequence that maximizes early detection of defects or confirmation of quality based on execution time or feedback; and test case clustering groups the test cases into categories that share similar characteristics or objectives based on dependencies or feedback. Applying these techniques can optimize your limited resources and help you reach your regression testing goals more effectively.

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RISHIKESH KUMAR

Salesforce Community Group Leader Vaishali | Quality Assurance (QA) | Manual Tester | 2X Salesforce Certified | Mentor| Ex-NSS Group Leader & Campus Ambassador | Speaker |
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Prioritize test cases using techniques like risk-based (focusing on recently changed or high-risk areas) or impact-based (critical features first). Automate prioritized tests to free up your team for manual testing of less prioritized but still important areas.

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4 Monitor and measure regression testing performance

The fourth step in prioritizing regression testing is to monitor and measure the performance of your regression testing process and outcomes. You can use various metrics and indicators to evaluate the quality, efficiency, and effectiveness of your regression testing, such as the defect detection rate, the defect leakage rate, the test coverage, the test execution time, the test automation rate, and the test feedback. By monitoring and measuring your regression testing performance, you can identify the strengths and weaknesses of your regression testing strategy, assess the value and impact of your regression testing efforts, and make informed decisions and improvements for future regression testing cycles.

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5 Communicate and collaborate with stakeholders

The fifth step in prioritizing regression testing is to communicate and collaborate with your stakeholders, such as developers, product owners, managers, and customers. This is essential for ensuring that regression testing aligns with the project goals, requirements, and expectations. Communication and collaboration should be ongoing throughout the process. This includes sharing the regression testing plan and scope for input and approval, reporting progress and results for feedback and validation, and escalating any issues or risks to get guidance and resolution. Through communication and collaboration with stakeholders, you can build confidence in the process and outcomes while delivering value to customers.

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RISHIKESH KUMAR

Salesforce Community Group Leader Vaishali | Quality Assurance (QA) | Manual Tester | 2X Salesforce Certified | Mentor| Ex-NSS Group Leader & Campus Ambassador | Speaker |
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Early Involvement: Include stakeholders (developers, product owners) early in the process to understand their priorities and concerns. Clear Communication: Regularly communicate testing progress, identified risks, and potential impacts on deadlines. Use clear and concise language. Collaborative Risk Assessment: Work with stakeholders to assess risks and prioritize testing efforts based on potential impact. Transparency and Visibility: Provide stakeholders with easy access to testing reports and results to maintain transparency and trust.

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How do you prioritize regression testing when resources are limited?

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1 Identify high-risk areas

2 Use test automation

3 Apply test prioritization techniques

4 Monitor and measure regression testing performance

5 Communicate and collaborate with stakeholders

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