The TDD of Crowd+

What Is TDD?

Test Driven Development (TDD) is software development approach where test cases are developed first to specify and validate the implementation code. Test cases are to test each functionality, making code simple and bug-free.

  • run the test, which should fail because the program lacks that feature
  • write “just enough” code, the simplest possible, to make the test pass
  • “refactor” the code until it conforms to the simplicity criteria
  • repeat, “accumulating” unit tests over time
  • You are not allowed to write any more of a unit test than is sufficient to fail; and compilation failures are failures.
  • You are not allowed to write any more production code than is sufficient to pass the one failing unit test.

Benefits of TDD

  • many teams report significant reductions in defect rates, at the cost of a moderate increase in initial development effort
  • the same teams tend to report that these overheads are more than offset by a reduction in effort in projects’ final phases
  • although empirical research has so far failed to confirm this, veteran practitioners report that TDD leads to improved design qualities in the code, and more generally a higher degree of “internal” or technical quality, for instance improving the metrics of cohesion and coupling

TDD Principles

By combining programming, unit test writing and refactoring, TDD is a structuring practice that allows to obtain a clean code, easy to modify and answering the expressed needs which remains the first priority when developing an application. The TDD has 3 phases:

How TDD has helped us

TDD has helped us prepare everything that is needed to be implemented in our project, before the implementation itself. Even though TDD is challenging, it helped us create code with better quality.



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Amrisandha Prasetyo

Computer science student at Universitas Indonesia | Aspiring product designer 🎨💻