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Overview of Test Driven Development in Agile

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Overview of Test Driven Development in Agile

The test-driven development is referred to be a style of programming in which three activities are tightly inter-connected to one another. These three activities are coding, testing, and designing. In simple words, the test which is developed specifies and validates what the code is going to do. The test cases are always developed before writing the code. The test-driven development is started with designing and developing tests for all the small functionality of the application.

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The TDD is responsible for instructing the developer to only write new code if the automated test has somehow failed. Thus this avoids duplication of the code.

What is the purpose of test-driven development (TDD)?

The main purpose of the TDD is to make the code all the clearer, bug-free, and simple as well. It develops and runs the automated test before the actual development of the application. And that is why it is also called a Test First development.

How does it work?

There are easy steps to perform the TDD which are mentioned below:

  • The first step is to add a test.
  • Then you need to run all the tests to keep a check if any new test fails.
  • After that, you are required to write some code.
  • Writing the code will take you to another step in which you have to run the tests and refactor the code.
  • The last step is to repeat all these steps.

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Advantages of TDD in Agile:

Everything has its benefits and so does this one which is mentioned below:

  • The purpose of writing the tests first is to help you realize what you exactly want from the code.
  • With TDD, you get to receive fast feedback which can help you perform even better.
  • Furthermore, TDD enables you to get a detailed specification of what is required.
  • Similarly, it saves you a lot of time that is spent on rework.
  • With that, you also get to save time that you spend debugging.
  • Moreover, another advantage is that you are easily able to identify the errors and problems in the code.
  • Similarly, with the help of TDD, you get to know whether your last change broke previously working code or not.
  • Also, the TDD allows the design to evolve quickly thereby adapting to your change and understanding the problem.
  • Moreover, with TDD you are obliged to write small classes that are focused on one thing.
  • It creates SOLID code, supports a clean interface.
  • Furthermore, it creates such codes which are not only maintainable and flexible but easily extensible as well.

This and many more advantages are gained through TDD.

Conclusion:

Thus using the Test-Driven Development not only saves you a lot of time and effort but also helps you create such codes that are very reliable and exactly according to your requirements. So it is best to prefer this approach over the traditional one because not only it is an easy approach but also has a variety of perks to offer which are too good to miss. So, learn how to use this approach by the help of CSM practice test  or specification technique now, stay home, stay safe, and never stop learning.

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