Testing techniques - QA Therapy episode highlights

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In the fast-paced world of software development, quality assurance, and testing have evolved into critical components of the development process. Navigating this complex landscape has become a challenge for many, especially when deciding which tests to perform, what to automate, and how to ensure the highest quality in software releases.

Our recent episode on the QA Therapy Podcast delved deep into these pressing questions, and today, we're excited to bring you the highlights. Hosted by Sérgio Freire and Cristiano Cunha, this episode featured a special guest, Joel Oliveira, a seasoned QA manager with a wealth of experience in the field.


Listen to the episode:

Testing techniques unveiled: a comprehensive overview

At the heart of our discussion was exploring various testing techniques and their practical applications. From the fundamental black-box and white-box testing methodologies to experience-based techniques and the power of test automation, our conversation provided a comprehensive overview of the tools at your disposal.

But more than just a rundown of testing techniques, this episode delved into the art of decision-making in software testing. It's not just about knowing these techniques; it's about understanding when and how to use them effectively. Joel Oliveira shared his invaluable insights into making these critical decisions, saving time and resources, and enhancing software quality.


Your gateway to testing success

If you've ever found yourself at a crossroads regarding testing techniques, this blog post is your gateway to testing success. Whether you're a seasoned QA professional looking to refine your approach or a developer interested in understanding the importance of testing, our podcast episode and this blog post have you covered.


So, without further ado, let's dive into the highlights of this episode and uncover the secrets to effective testing techniques in today's software development landscape.


Setting the stage: the crucial role of testing techniques

Software development is a complex ecosystem where innovation meets uncompromising quality standards. Despite the advancements in test automation, a fundamental question persists: how can you ensure your tests are not only efficient but also effective? 

In this context, the importance of testing techniques cannot be overstated. These techniques are more than just procedural steps; they are systematic approaches that define test conditions, design test cases, and specify test data, offering a strategic roadmap for QA teams.


Understanding the Core Categories of Testing Techniques

Joel Oliveira took us on a journey through the diverse categories of testing techniques and provided valuable insights into when and how to apply them:


Black box testing techniques

This category includes equivalence partitioning, boundary value analysis, decision tables, and use case testing, which is essential when you need to focus on the software's external behavior.

White box testing techniques

Delving into the software's internal workings, these techniques encompass statement and decision testing, as well as code coverage analysis.

Experience-based testing techniques

Drawing from testers' experience, methods like error guessing and checklist-based testing offer valuable insights and uncover hidden issues.

Exploratory testing: beyond the name

Joel Oliveira also shed some light on the misconceptions and nuances that surround exploratory testing during this discussion on the QA Therapy Podcast:

The advent of agile and "ET" (exploratory testing):

"But nowadays, with everyone moving to agile, this agile way of doing things, this new way, that will solve all the problems, everyone is doing exploratory testing. “ET” for friends, as I call it."


Joel sets the stage by acknowledging the prevalent adoption of exploratory testing, or "ET" for short, in the context of agile methodologies, pointing out its growing popularity as an agile testing approach.


The crucial element - time boxing:

"Exploratory testing implies that you have a time box and implies that during that time box, your testing activities are not interrupted... the maximum that you will have is one hour or two hours, where you will 100% focus on these testing activities."


Joel reveals a critical aspect of exploratory testing: time boxing. Exploratory testing requires testers to work within a fixed time frame, during which they dedicate their full attention to testing activities without interruptions.


Exploring the true essence of exploratory testing:

"What I realized is that most of the testers that are doing exploratory testing, actually, they are not doing it, or at least they are not using the technique as they are supposed to. And, for me, that's the easiest way to explain. Using the name or using the technique."


Joel emphasizes that many testers use the term "exploratory testing" without fully grasping the underlying technique. He underscores the importance of distinguishing between the name and the actual practice of exploratory testing.


The art of correctly applying the technique:

"You need to understand the technique. You need to have this practice to be able to apply it correctly and to be able to achieve the added value of the technique. Applying or believing that you are applying the technique without knowing it, is actually not helping anyone."



Joel underscores that truly applying the technique of exploratory testing requires a deep understanding and practice. It's not sufficient to merely label a testing activity as exploratory; testers must grasp the essence of the approach to derive its full benefits.


"I can share with you that I did several workshops around the world, specifically on testing techniques... not even a single person was applying exploratory testing correctly. So I think that's a very good insight into this."


Joel shares his experience conducting workshops on testing techniques, where he found that even experienced testers often struggled to apply exploratory testing accurately. This highlights the need for better comprehension and application of this valuable technique in the testing community.

Joel's insights into exploratory testing provide a clear understanding of the importance of time boxing and correct practice in this agile testing approach, dispelling misconceptions and emphasizing its relevance in modern software development.


Pairwise Testing: Striking the Balance Between Coverage and Efficiency

Joel begins by discussing the intricacies of combinatorial testing, pointing out that while the technique aims to encompass all possible combinations, the sheer number of permutations can be unmanageable. In such cases, he advocates for the use of pairwise testing as a powerful optimization technique.


Efficiency through optimization:

"There is no point in having 1000 different combinations. If you know that you will not execute them all... We will not execute 100 or 1000 test cases just with different combinations. So, being more efficient, it's where these different techniques can help."


Joel emphasizes that pairwise testing isn't about increasing coverage but rather strategically reducing the number of test cases while preserving critical coverage. It achieves this by testing pairs of parameters together, offering a balanced approach to comprehensive testing.

Joel underscores the impracticality of executing an extensive set of combinations manually or with limited resources. Pairwise testing steps in as a pragmatic solution to manage the testing process efficiently.


Real-life examples of pairwise testing:

Joel provides two real-world scenarios where pairwise testing shines:


Compatibility Testing: Pairwise testing is particularly useful when testing various software versions, browsers, and operating systems. It helps streamline testing by covering essential pairs of configurations, making it more manageable for testers dealing with diverse compatibility matrices.


Form Testing: When dealing with forms that have multiple parameters, pairwise testing ensures that all significant parameter pairs are tested. This approach proves efficient when testing various form inputs and combinations, guaranteeing comprehensive coverage without overwhelming testers.


Joel's perspectives offer a wealth of knowledge on the practical application of pairwise testing and the nuanced approach to selecting testing techniques based on context and constraints.


Adaptation and Contextual Application

In the broader context of testing techniques, Joel emphasizes the importance of learning and practicing various techniques. He also advocates for their adaptation to different contexts. His wisdom can be summarized as follows:


Learning and practice:

"You need to learn all these different techniques... understand the techniques, all the techniques that you can have on your test set."


Joel underscores the significance of learning and understanding testing techniques thoroughly, including their advantages and disadvantages.


Contextual application:


Joel stresses that the choice of testing techniques should be context-driven, dispelling the notion of a one-size-fits-all approach.


Misconceptions and optimizations:

"Some techniques are just applicable for manual testing or just automation... it always goes to my mind that it’s like when you see a team pushing something with a square wheel... That's basically what I see with the test techniques."


Joel challenges misconceptions about testing techniques, emphasizing that they don't necessarily require expensive tools and can save time and effort when applied correctly.

Broadening the discussion: general testing topics

Beyond these highlights, we encourage you to check out our QA Therapy's Testing Techniques episode to learn about other pivotal topics, for instance:


Test Planning and Strategy: A well-defined test plan and a robust testing strategy are the cornerstones of successful QA efforts. Sergio, Cristiano, and Joel explored how these elements could be tailored to align with the specific goals of your project.


Streamlined Test Execution and Reporting: The podcast also discusses the answers to how you can execute tests efficiently, track results, and generate insightful reports that empower data-driven decision-making.


Xray Enterprise: transforming QA practices

Now, let's turn our attention to Xray Enterprise, the indispensable companion that takes your testing endeavors to the next level. Building on Joel's insights, we explore the transformative capabilities of Xray Enterprise:


  1. Data-driven testing simplified: Xray Enterprise allows you to define datasets and parameters, automating the generation of combinations and simplifying data-driven testing.

  2. Optimized test scenarios: Advanced model-based algorithms within Xray Enterprise Test Case Designer quickly generate optimized test scenarios, allowing QA teams to focus their efforts where they matter most, increasing efficiency and coverage.


The future of QA: adapting and thriving

It's clear that the world of software testing is in a constant state of evolution. New technologies, methodologies, and tools emerge regularly, shaping the future of QA. Joel Oliveira leaves us with a powerful reminder: adaptability and a continuous quest for knowledge are the keys to thriving in this dynamic field.

Testing techniques are the cornerstone of successful quality assurance in software development. Armed with a deeper understanding of these techniques and their applications, you can elevate your QA practices and navigate the ever-expanding QA landscape with confidence. Embrace the power of testing techniques, explore the broader topics in QA, and unlock your true potential with the assistance of Xray Enterprise

Your journey to QA excellence begins here, with the knowledge and tools to thrive in the world of software testing.


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