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[Meetup VOD] AI Era, Why TDD Now?

This is a recorded video of the TDD online live meetup held in July 2025.

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강의소개.상단개요.수강생.short

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It was great that you explained the competencies needed in the AI era using specific examples. Thank you for the excellent lecture.

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강의상세_배울수있는것_타이틀

  • The Development Environment Changed by LLM and the Role of Human Developers

  • The Meaning and Application of TDD as a Solution to Complement LLM Non-determinism

In the AI era,
what it means to live as a developer

AI coding tools have deeply permeated the daily routine of development. Simply describing functionality generates code immediately, and development speed and productivity have improved noticeably. Now, the act of 'writing code' itself is no longer a core responsibility of developers. However, this means we now face more fundamental questions as developers.

✅ "What are we building right now?" (Problem Definition)
✅ "Is this code really working as we expected?" (Result Verification)
✅ "When problems arise, where should we start checking and how can we improve?" (Refactoring)

While AI is handling many tasks for us, the responsibility to define what to build and validate the results still remains with developers . Now that we're collaborating with AI, the developer's role has become clearer, and we need practical and reliable ways to fulfill that responsibility.


Why TDD Now?

First, by writing tests before implementing functionality, you can more accurately define 'what to build' and communicate clear goals to AI as well.

Second, even if AI quickly generates code for you, whether that code works as expected is another matter entirely. Automated testing is the most reliable way to repeatedly verify this.

Third, most importantly, now AI also suggests test code. The barrier to starting TDD has been lowered, and an environment has been created where it can be practiced much more easily than before.


Session Introduction

✋ This lecture is a recorded video of a live meetup held in July 2025, consisting of Part 1 presentation session and Part 2 Q&A session.

Part 1. Presentation Session

The presentation session covers the changing development environment with the emergence of LLMs. As AI takes on many aspects of coding, the role of human developers is also changing, but the limitation of LLM non-determinism remains an area that humans must still take responsibility for. Test code is presented as one of the important solutions to this challenge, and we discuss new development approaches that AI and TDD will create together.

Part 2. Q&A Session

In the Q&A session, questions and answers about whether TDD can be applied in various environments will follow.
Through this, we will take time to revisit the essence and purpose of TDD and think together about why and how it should be applied.

Want to learn the world of TDD more deeply?!


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학습 대상은 누구일까요?

  • Developers who want to know why TDD is important in the AI era

  • Developers curious about applying TDD in various environments

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