Test-Driven Development (TDD)

Correct Answer: Emphasize the importance of maintaining TDD practices even for simple functionalities to ensure code quality and future scalability.

Maintaining TDD practices is crucial for ensuring code quality and future scalability, as it helps catch issues early and makes modifications easier. Skipping tests, even for simple functionalities, can lead to unnoticed bugs and technical debt. As the project manager, reinforcing the importance of adhering to TDD keeps the team aligned with best practices and the project's standards. Agreeing to skip tests to save time may result in more significant issues later, increasing the overall project cost and effort. Implementing the suggestion but merely monitoring impact is risky, as problems may only become apparent after they have affected the project negatively. Delegating the decision to the quality assurance team is not appropriate because, in TDD, developers are responsible for writing tests before coding. Therefore, emphasizing the continuation of TDD practices is the most effective response.

Correct Answer: Explain the importance of TDD and how it ultimately enhances the project quality, find out the bottlenecks and address them

As a Scrum Master, rather than throwing away practices such as Test Driven Development (TDD), one should understand the importance of how TDD ultimately enhances project quality by identifying deficiencies early in the project lifecycle. If the team is spending a lot of time writing and maintaining tests, instead of eliminating TDD altogether, the scrum master should investigate the bottlenecks. It could be an opportunity for process improvement or coaching for better testing techniques. Other options like 'Agree with the team and stop the TDD practice altogether', 'Leave the decision to higher management', and 'Ignore the schedule delay as TDD is a must-follow practice' are not appropriate because as a Scrum Master, your role is to guide and empower your team to improve their practices, not to blindly follow without understanding or delegate the decision to someone else.

Correct Answer: High percentage of failing tests before implementation and passing tests after

In Test-Driven Development (TDD), the ideal pattern follows 'red-green-refactor':

1. First write a failing test (red)
2. Then implement the minimum code to make it pass (green)
3. Finally refactor while maintaining the passing status

Having a high percentage of failing tests before implementation indicates proper test-first development. When these tests subsequently pass after implementation, it confirms the code meets the predefined requirements.

The other options are incorrect because:

Equal distribution of passing/failing tests would indicate inconsistent test practices, not TDD.

Maximum passing tests during implementation suggests tests were written after code, contradicting TDD principles.

Consistent increase in passing tests from sprint to sprint focuses on quantity rather than the TDD cycle and could indicate tests being written after implementation.