ITGSS Certified DevOps Engineer Practice Test

What methodology emphasizes writing tests before writing the actual code?

1. Agile Development

2. Test Driven Development (TDD)

3. Continuous Delivery

4. Behavior Driven Development

The correct answer is: Test Driven Development (TDD)

Test Driven Development (TDD) is a methodology that focuses on writing tests before writing the corresponding code that is being tested. This approach encourages developers to think carefully about the requirements and design of their code in advance. By first defining the expected outcomes through tests, developers ensure that the implemented code meets the specified criteria from the outset. The fundamental cycle of TDD involves writing a failing test, coding the simplest implementation that passes the test, and then refactoring the code while ensuring all tests still pass. This process leads to more reliable and maintainable code, as it inherently encourages better design practices and facilitates easier debugging. By prioritizing tests, TDD also fosters a mindset of quality assurance from the beginning of the development process, leading to fewer defects and a better understanding of how the code needs to perform. This is particularly beneficial in environments where requirements may change frequently, as the tests serve as a safety net that allows for more confident modifications and enhancements to the system.