Automated Regression Testing Services

Regression Testing Approach: Strategies, Risks, Tools and best Practices


Let’s talk about a very specific toolbox, used frequently by advanced developers. Proficient regression testing consists of cycle check iterations, dedicated to each software upgrade phase. Programmers elaborate such an activity to figure out if updates are working well and no bugs or crashes appear connected with extended functionality. Presumable regression testing approach shows how thoroughly applications should be verified concerning possible mistakes.

Correct regression testing is going far beyond casual previous cases relaunch. Firstly, this check type indicates if added possibilities are compatible with the previous ones, not breaking the whole system.

What is regression testing, and what are the reasons to use it?

Sincere regression testing is a powerful quality marker, diligently revealing cases of adverse code spoiling with expanded software features. Usually engineers adapt such a check right after newly added functions are launched or previously existing bugs are eliminated. Application code tends to be highly affected by changes: once you touch some module, another one might crash, so we need to discover program dependencies between them and make everything clear.

Truthful regression testing approach requires overall system condition evaluation with regards to newest changes being implemented.

  1. Analyses updated features.
  2. Ensure no new functions step into the conflict with others.
  3. Finds existing mistakes or bugs promptly.
  4. Easily identifies mistakes in fresh code lines.

Correct Strategy for regression testing approach

Some crucial factors define a regression testing strategy success, e.g. application updates frequency, changed functionality significance, and which already working modules are impacted.

You may find below a list of tilt-proof strategies, designed specially to run the regression testing comfortably:

  • Estimate or modify changes scope, depending on their final sizes.
  • Prioritising verification automation, measure which segments must be operated manually and which ones migrate to automatic.
  • Engineers have to count with all experienced cases, despite their outcome.
  • Emphasise procedure in details, considering roles allocation while automating regression testing.
  • Make risk assessments, evaluating your business sizes and demands.

Professional regression risks operation and monitoring

Any regression testing provided causes certain risks and then results in deterioration, so here are some tips on how to handle the project’s regression risks:

  • Diligently imply and assess regression risks prior to regression testing process commencement. Concentrate your forces on the most vulnerable zones.
  • Adapt risks softening tactics to reduce found threats. Simplest situation: revealing data insecurity, you may simply manage to buy an additional drive and make backups to soften risks.
  • Perform managing regression risks wisely, building some sort of risk management plan or risk database; in this way you may keep calm, as all threats are revealed and monitored.
  • Report any potential regression risks to stakeholders, ensuring conscious release date plans.

As a rule, regression tests are an inevitable development process plan, but at the same time they waste huge time and money. While automating regression tests, we sufficiently economise cost and time, elaborating the proper techniques matrix.

Striving to automate regression tests, consider the following:

  • Eligible while selecting a suitable software specification: automated regression tests do not suit each software. In case it has progressive multimodal interface, better undergo UI-based checks.
  • How often software is updated: in case you make amendments frequently, launch this event to save powers in the name of long-distance run.
  • Abilities in possession: automated regression requires notable preliminary funds and sources allocation. Unfortunately, project restricted financing might make checks automation impossible.
  • Overall scale wanted: correctly configured automated checks may provide needed coverage, though some of them might be provided manually in addition to getting sufficient results.

Basic regression testing techniques

As a rule, while performing regression testing, you have to go through three stages:

  1. Configure automated and manual techniques: prepare needed instruments to be available quickly, e.g. cases & data, scripts, etc.
  2. Assume what exactly the effect can cause updates on application modules: identifying such areas, you may concentrate on verifying them more precisely.
  3. Revenue automated and manual checks: defining the affected area, you may combine both types to check exact updates' impact.

Bear in mind the most common regressions which need verifying often: search, login and checkout. During revealing these deteriorations, adapt various tactics e.g. performing functional tests, making sure software performs tasks correctly, and orchestrating automated tools.

How to distinguish functional mechanisms and regression mechanisms

On one hand, functional testing and regression testing come from different universes, but complement each other regarding software quality assurance. But functional technique checks definite functions relevance, while regression testing keeps existing functionality after embedding the new one. Anyway, both approaches ensure a software stable work ensuring customer’s satisfaction.

Being an unalienable component of any delivery pipeline or application comprising automated regression testing reassures no critical mistakes appeared after creating code improvements. Launching a suite of automated tests checking each new build, programmers promptly run through appeared mistakes to clear the code long before release.

Fundamental Regression Testing Tools we use


We have a wide range of regression testing tools to choose nowadays. All of them have their own advantages and disadvantages, so let us figure out more about them:

  • Alfee Platform is a regression testing instrument implying intellectually developed mobile and web software checks. Alfee created a solid foundation helping programmers to promptly search and eliminate any deteriorations revealed long before release. Alfee Platform is freely embedded to most programming instruments and is compatible with many operational systems and browsers, forming truly flexible solutions.
  • Selenium WebDriver is a highly demanded powerful instrument designed to support web application regression testing. Usually programmers adapt it to utilise both manual and automated mechanisms. Selenium WebDriver is freely embedded to most programming instruments and is compatible with many operational systems and browsers, forming truly flexible solutions.
  • Unit is a highly demanded open-source framework adapted to Java development enhancements. Programmers use this technology to develop checks cases which fundamentally deploy application features. JUnit is a simple framework and accommodates different programming instruments, forming a perfect choice during regression testing.
  • Testing is also a highly demanded open-source framework, very JUnit-like. Same as JUnit, this instrument supports regression testing and accommodates different programming instruments.
  • Cucumber is a powerful instrument empowering behaviour-driven development (BDD). Programmers involve this technology to develop cases which fundamentally deploy application features. Cucumber delicious syntax creates a fully understandable code, which suits both highly experienced developers and not so much technically aware stakeholders.
  • Appium is a powerful instrument featuring mobile application regression testing. Programmers adapt it to automate the algorithm to support web, native and even hybrid mobile software. Appium is compatible with a huge number of operational systems, forming truly flexible solutions.
  • Watir is a powerful instrument empowering mobile application deterioration verification. Programmers adapt it in automating the algorithm to support Ruby-based software freely. Watir accommodates different programming instruments, forming a perfect choice for engineers.
  • Sahi Pro is a powerful instrument for web application deterioration verification. Programmers adapt it for automating the algorithm to support Sahi-based software freely. Sahi Pro is compatible with a huge number of operational systems, forming a perfect choice for engineers.

Most suitable Framework for regression testing

At the time a testing team chooses this automated regression testing mechanism, it is necessary to pick up a suitable framework to support the technical basement. Selecting the right framework, diligent professionals initialise case automation. Get familiarised on how definitive structure reflects in the process:

  • Empowered quality assurance professional, upholding vital instruments chosen.
  • Perfectly fitting and actual architecture forming regression testing includes cases which suit different mechanics.
  • Fundamental verification scenario, undersized to suit particular job requirements.
  • Prior to creating the test automation framework, QA professionals perform embedding solutions to check if they are able to concentrate exactly on a selected scenario.

Top-notch practices used in regression testing


Here at Alfee we completely understand that some IT newbies may experience failures starting with such a complicated, multi-sided procedure. But among truly experienced engineers there is no wonder how to provide verifications professionally. Thus, we prepared a list of tips, explaining how to commence the procedure properly:

  1. Confirm thoroughly scripts chosen, optimising used methods.
  2. Always keep case storage updated and perform regression testing based on the data from this storage.
  3. Refresh standard operations list regularly.
  4. Diligently search any application risk zones prior to procedure commencement.
  5. Link regression testing to both functional and non-functional ones.
  6. Perform regression testing when a new code was successfully compiled.
  7. Design the regression testing approach considering studied risks surrounding an existing enterprise model.
  8. Make an intended activity and then compare its results to desired ones or to the previous in the same conditions.
  9. Integrate automated regression testing to your uninterrupted delivery pipeline or embedding algorithm; that’s how you check if added modules do not corrupt existing ones and possible mistakes are promptly eliminated.
  10. Create a solid algorithm ensuring everyone participating knows it well; in this way everyone will know that all teammates check results adequately.
  11. Detect updates which will affect program modules after implementation, so after obtaining results you will know areas to focus on.
  12. Combine manual and automated mechanisms to observe if existing features were not deteriorated by extended features, so you will easily determine bugss caused by brand new upgrades.

Mechanics types adapted in a regression framework

Maybe it is no big secret, but even this procedure has its own subtypes, which you have to choose wisely, establishing mutual understanding with teammates. Alfee helps to distinguish these types with a small regression testing framework choice formula:

  • Launch the previous cases to compare what changes occurred and if there is anything corrupted inside.
  • Or conduct regression testing with only partial programming means, as not all modules were impacted by code changes.
  • Adapt regression testing approach to the cases picked up wisely; of course, low-priority cases are launched after high-priority ones (small hint: pick up needed cases by previous versions with cases juxtaposition).
  • Above-mentioned mechanisms can be used together in a hybrid procedure, launching one of them partially revealing an affected module selected.

Examples of faulty regressions tests

Unfortunately, inexperienced programmers make fundamental mistakes while conducting or not even conducting such a procedure. Alfee joyfully discovers some most common faulty cases:

  1. Not even conducting regression testing when new code was written or bugs detected.
  2. Not defining a proper regression testing framework or not sticking to one chosen leads to endless investigations and emergency procedures, finalising a big money and time loss.
  3. Not setting a target or not explaining it to other project participants.
  4. Launching the same cases again to check newer releases, which wastes finances and money, but still regression testing is necessary to firmly acquire no crushes will be experienced during software running.
  5. Not preferring automated mechanisms to the manual ones.

But there are even more fails performed by experienced specialists while conducting regression testing. In order to omit such an unpleasant situation, Alfee proposes an intellectual regression testing approach which uses a single automated solution answering your problems.

Alfee intellectual mechanisms concerning release techniques and regression testing insights assist engineers with analysing, monitoring and discovering software modifications. We present location-to-location comparison with build-over-build deterioration, empowered by Artificial Intelligence embracing new OS builds, software versions, locations, functionality expandings and beyond.

Alfee executes a professional Regression Testing

Our regression testing services thoroughly recheck all program modules identifying any consequences caused by software upgrade. Our truly diligent specialists detect any harmful mistakes which possibly occurred while updating software, providing ground-breaking bugs elimination, code enhancements, patches, new builds and whatever is needed due to a complex upgrading procedure.

With expanding applications by adding new functions, there is a possibility you add completely new critical mistakes, corrupting already existing outfitting. Thus, we perform regression testing, verifying if the new application build still works smoothly.

Alfee assists customers with top-grade high-quality regression testing, tackling all possible bugs relentlessly, never giving them a chance.

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