logo
logo
AI Products 

TDD vs BDD: Know The Difference

avatar
Naveen Singh
TDD vs BDD: Know The Difference


People keep discussing and writing on TDD vs. BDD and their differences in software development. Despite tons of blog posts trying to settle the debate once and for all, they stand with little to no success. 

For this reason, we have put together a blog post on TDD vs. BDD explaining it comprehensively. We shall reach the answer in a series of steps. However, we are not sure how this article will get treated, so stay with us till the end.


What is TDD?

Test-Driven Development(TDD) is a common practice for developing simple, maintainable, and well-tested code. The approach states that one should write “implementation code” only if there is a “failing test case.” It is an iterative approach for developing software products where –

  • A failing test case is written,
  • Enough business code is created, which makes the failing test case pass
  • Then if needed, the entire code is refactored.
  • Finally, the entire process is repeated, creating more tests over a period of time. 

Become certified in Test-Driven Development- Enroll in Test-Driven Development (TDD) Training today 


Process Of TDD

Here is a 6 step process of TDD

  1. Before working on code, it’s crucial to make sure that your customer understands what you’re building or creating. After all, if you don’t know how your customers plan on using the software, then it’s very likely that no one will actually use it once it’s built.
  2. Choosing a way for them to report back whether features work or not is an important aspect of this step. Things might get a lot easier to understand with the help of user stories and scenarios, which can be written in various ways such as “When we … Then we should see … So that users will …”
  3. Write the unit test for your use case. Do this before writing any implementation of the code for the use case. After all of that is done and completed, run your tests to confirm that it fails or works any kinks out. Yes, at first, it will probably fail because you have not yet implemented all of the code needed to successfully complete it.
  4. The idea behind writing a unit test is so we can confidently know that what we wrote while testing works as intended. If something already exists in our program in some shape or form. In that case, we may be duplicating something and therefore wasting time on opening up a second window just to do one tiny little thing when there might not even be a need for another window, to begin with.It’s best to get familiar with how everything works together instead of creating more things just because we want variety or just because someone might think it’d be more fun this way.
  5. To minimize the amount of code you have to write, write the minimum amount that causes your tests to pass. Once you can consistently run that test and find no bugs, you are ready to move on to writing test cases for the next use case.
  6. Write a test case that covers each new functionality written in the same way as the first test case. To do this, we need to be able to modify our automated tests as changes are made to our source code.
  7. Refactor your code to clean up your code so that it runs better.


You might be interested in reading: Role of Tester in Test Driven Development (TDD).


To view the full blog and this blog "TDD vs BDD" is originally published on Agilemania website.

collect
0
avatar
Naveen Singh
guide
Zupyak is the world’s largest content marketing community, with over 400 000 members and 3 million articles. Explore and get your content discovered.
Read more