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Last updated on 2024年7月3日

You're up against tight project deadlines. How do you decide which regression test cases to prioritize?

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When racing against the clock on a software project, every moment counts, especially when it comes to regression testing. This phase is crucial for ensuring new code changes haven't adversely affected existing functionality. As deadlines loom, you can't afford to retest everything, so you must prioritize. The key lies in identifying which test cases will provide the most significant risk coverage in the least amount of time. This involves a strategic approach to selecting test cases based on various factors such as past defects, critical features, and code changes.

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Akash Ajay

1 Risk Analysis

Risk analysis is your first line of defense in prioritizing regression test cases. By assessing the likelihood and impact of potential defects, you can focus on areas that would cause the most damage if they were to fail. This means that test cases covering critical functionalities that are widely used by your customers or that handle sensitive data should be at the top of your list. Remember, the goal is to mitigate the most significant risks to the system's stability and user satisfaction.

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Sadia Ghulam Rasool

Test Automation Engineer | core banking | web application testing| Selenium | Api Testing | Fintech | Digital Payment | POS acquiring , Merchant & E-commerce payment | VISA/MC/UPI certifications | IBFT
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Prioritize regression test cases based on critical business functionalities, recent code changes, and past defect patterns to ensure maximum risk coverage within the project deadlines can be the beneficial.

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Vinod Raju

Founder @ VSJ Technologies | Helping business owners with creating SEO Optimised Websites, Email Marketing & Content Writing.
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Risk analysis is essential for prioritizing regression test cases effectively. By evaluating the likelihood and impact of potential defects, you can prioritize test cases that address critical functionalities and sensitive data handling. Focus on areas that, if they fail, would cause the most damage to system stability and user satisfaction. This approach ensures that your testing efforts mitigate the highest risks to the system.

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Akash Ajay
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Prioritise regression tests by focusing on areas with the highest risk. Test critical features and sensitive data handling first to ensure system stability and user satisfaction.

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2 Test Coverage

Maximizing test coverage with a limited set of test cases is a balancing act. You want to ensure that each test case covers as much ground as possible. Look for test cases that exercise multiple system components or check for various outcomes within a single scenario. Prioritizing these 'broad stroke' test cases can help you maintain confidence in system integrity while dealing with time constraints.

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Akash Ajay
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Maximising test coverage with few test cases is key. I focus on tests that check multiple parts or outcomes, prioritizing these to keep the system reliable even with time limits.

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3 Defect Metrics

Historical defect metrics are invaluable when deciding which regression tests to prioritize. Test cases that previously uncovered high-severity bugs should be high on your list, as these areas of the code may be more prone to additional issues. This is based on the defect clustering phenomenon , where bugs are often found in clusters within the system. By focusing on these 'hot spots,' you increase the chances of catching critical defects early.

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Md Maruf Rahman

ISTQB? Certified Tester | QA Automation Engineer | Cypress | WebdriverIO | Selenium |
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When facing tight project deadlines, prioritizing regression test cases based on defect metrics is crucial for efficient testing. Start by identifying high-priority modules/functionalities critical to the application's core functionality. Focus on test cases that historically uncover the most critical defects or have a high impact on user experience. Metrics like defect density, severity & frequency of occurrence can guide this prioritization. Also, consider the risk associated with untested functionalities or recent changes, ensuring they receive thorough testing to mitigate potential issues. By focusing regression testing efforts on areas with the highest potential impact & risk, teams can maximize test coverage under stringent timelines.

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4 Recent Changes

Recent changes to the codebase are a significant indicator of where you should focus your regression testing efforts. Test cases that validate the functionality directly affected by recent commits should take precedence. This is because changes, no matter how small, can introduce unforeseen issues. By aligning your test cases with recent updates, you enhance your chances of catching regressions where they are most likely to occur.

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5 Automated Tests

Leveraging automated tests can be a game-changer when under time pressure. Automated regression tests can run much faster than manual ones, allowing you to cover more ground quickly. Prioritize running automated tests that have a track record of finding defects or that cover critical paths in your application . However, be mindful that automated tests may need updates to reflect recent changes and can sometimes miss nuances that a manual tester would catch.

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Akash Ajay
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Using automated tests saves time and covers more ground quickly. I prioritize automated tests that find defects and cover critical paths. But remember, they need updates and might miss details a manual tester would catch.

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6 Business Impact

Finally, consider the business impact when choosing which regression tests to run. Test cases that involve features or functions critical to your business operations or customer experience should be prioritized. This ensures that the most business-critical aspects of your software remain reliable and functional, which is especially important when there's no time for extensive testing.

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7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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You're up against tight project deadlines. How do you decide which regression test cases to prioritize?

1

2

3

4

5

6

7

1 Risk Analysis

2 Test Coverage

3 Defect Metrics

4 Recent Changes

5 Automated Tests

6 Business Impact

7 Here’s what else to consider

Software Testing

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You're up against tight project deadlines. How do you decide which regression test cases to prioritize?

1

2

3

4

5

6

7

1 Risk Analysis

2 Test Coverage

3 Defect Metrics

4 Recent Changes

5 Automated Tests

6 Business Impact

7 Here’s what else to consider

Software Testing

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