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1. Custom Software
Testing: How We Use
the Pareto Principle
BT Techsoft

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Custom software testing is a vital component in the journey of software development companies in
Singapore, where precision meets efficiency. Murphy’s Law and the Pareto Principle are two essential
ideas that form the basis of their strategy. A crucial component of this process is the Pareto Principle,
which postulates a disproportionate link between input and output and the likelihood that a project would
succeed largely with a lower amount of work. Murphy’s Law brings a cautionary perspective, reminding us
that if something can go wrong, it probably will. This blog delves into how these principles guide our
software testing strategy in Singapore, ensuring both effectiveness and preparedness for potential
challenges.
Understanding the Pareto Principle in Software
Testing
The Pareto Principle is not just a theoretical concept; it has practical applications in software testing. This
principle tells us to focus primarily on what gives us the most significant results. In the context of software
testing, this translates to prioritising positive test cases. Positive test cases are those that check if the
software functions correctly under normal conditions – the scenarios most users will encounter. By
concentrating on these cases, testers can quickly identify the majority of potential issues with minimal
effort.

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Test Case Development and Classification
A test case is essentially a set of actions executed to verify a particular feature or functionality of the
software. Each test case is like a roadmap, guiding testers through the process of evaluating the software.
These are meticulously crafted by the Singapore software development company based on user stories
and software requirements, ensuring that every aspect of the application is scrutinised.
In custom software testing, we categorise test cases into two primary types:
1. Positive Test Cases: These are designed to confirm that the software behaves as expected
in standard scenarios. They are the most common situations a user is likely to encounter.
2. Negative Test Cases: These, conversely, deal with less common, often edge-case scenarios.
They test the software’s resilience against unusual or unexpected inputs or conditions.
Practical Application of the Pareto Principle

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Applying the Pareto Principle in software testing is a strategic process. It starts with the tester focusing on the
positive test cases. This approach is time-efficient, as these cases generally take up only about 20% of the testing
effort but are capable of uncovering about 80% of the bugs.
Here’s how it works:
● Testers first execute all positive test cases for each task, ensuring that the most common user
scenarios are bug-free.
● Only after all positive test cases pass do testers move to negative test cases. This step is more time-
consuming, taking up the remaining 80% of the testing time, but is crucial for thorough testing.
● The negative test cases delve into less common scenarios, uncovering the remaining 20% of bugs
that could affect a smaller user base but are just as critical for overall software quality.
This technique guarantees a high standard of quality while also streamlining the testing procedure. Testers may
swiftly detect and resolve the majority of issues by giving priority to the most significant tests, resulting in a strong
and dependable program for the end user.
Escaping Murphy’s Law in Software Testing

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In the realm of software development companies in Singapore, Murphy’s Law — “Anything that can go
wrong will go wrong” — serves as a crucial reminder. It highlights the need for preparedness against the
worst-case scenarios. A common pitfall in software development is when new features disrupt previously
implemented ones. To prevent this, regression testing becomes indispensable.
Regression testing, particularly through automated tests, is a proactive approach. It ensures that new
changes or additions don’t adversely affect the existing functionality. Manual regression testing in large
projects is impractical, as it’s time-consuming and against the essence of the Pareto principle. Automated
scripts, or autotests, are designed to efficiently rerun existing test cases, ensuring consistent quality and
stability.
Automating the Testing Process

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The shift from manual to automated testing is a game-changer in software quality assurance. This process
is divided into backend and frontend testing, catering to different aspects of the application. Backend
testing includes unit and API testing, while the frontend focuses on web and mobile interfaces.
Automated testing not only speeds up the process but also enhances accuracy. By automating repetitive
tasks, it frees up QA specialists to focus on more complex test scenarios, improving the overall
effectiveness of the testing process.
Workflow in Automated Testing
The workflow in automated testing is a collaborative effort. When a backend developer creates an API, they
also need to provide technical documentation and positive auto-tests for each feature. These tests are run
to ensure everything works as intended before passing it on to the automation QA tester.

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Efficiency and Quality Assurance in Automated
Testing
Efficiency and quality assurance are at the heart of automated testing. When autotests fail, it
signals a need for action: either the developer needs to tweak their code, or the autotests require
updating. This quick feedback loop allows for rapid fixes, maintaining the software’s integrity.
This approach not only saves time and resources but also secures the software against potential
errors introduced by new updates. With a well-organised auto-testing process, the impact of
Murphy’s Law is significantly reduced, assuring the stability of the software as it evolves.
Read More – Field Service Professionals Management: Challenges and Solutions

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Source URL -
https://mirroreternally.com/custom-software-testing-how-we-use-the-pareto-principle/
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