Vish's Journey in Computer Science

For this blog entry, I explored the article “Test Driven Development (TDD) Tutorial” by Guru99 (available at: https://www.guru99.com/test-driven-development.html). This resource provides a practical explanation of Test-Driven Development and emphasizes how it improves software quality through disciplined testing practices.

The article explains that TDD is a methodology where developers write automated test cases before writing the actual code. It describes the process in a structured way, starting with identifying requirements, writing a test case, developing code to pass the test, and then refactoring the code. It also highlights key benefits such as improved code quality, better design, fewer bugs, and increased confidence when making changes. Additionally, the article discusses some limitations, including the initial learning curve and the perception that TDD may slow down development.

I chose this article because I wanted a beginner-friendly yet detailed explanation of TDD that connects directly to how we implement testing in class. In our Software Quality Assurance course, we are using tools like JUnit for writing test cases, and I wanted to see how TDD fits into a real development workflow beyond just writing tests after coding.

From this resource, I learned that TDD is not only about testing functionality but also about enforcing better design principles. Writing tests first forces developers to clearly define expected behavior, which leads to simpler and more modular code. I also found it interesting that TDD encourages minimal coding—only writing enough code to pass the test—which helps avoid unnecessary complexity. This idea changed my perspective, as I used to write large portions of code first and then test later.

This article had a strong impact on how I think about my future programming practices. I now understand that TDD can act as a guide during development rather than just a validation step at the end. In my upcoming assignments, especially when working on Java classes such as Product, Customer, and Order, I plan to first write JUnit test cases that define expected outputs and behaviors. Then I will implement the code step by step to satisfy those tests. This approach will help me catch errors early and ensure that my code meets requirements more reliably.

Overall, this resource reinforced the importance of Test-Driven Development as a core practice in Software Quality Assurance. It showed me that writing tests first is not a limitation but a powerful strategy for building high-quality, maintainable software.