Comparing Behavior Driven Development (BDD) and Test Driven Development (TDD): Approaches and Differences

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Behavior Driven Development (BDD) and Test Driven Development (TDD) are both software development methodologies that promote testing early and often, but they approach this task from slightly different angles.

Test Driven Development (TDD)

TDD is a development methodology that involves writing tests before writing the actual code. The TDD cycle is usually described as:

1. Write a failing test. This test describes a desired feature of the software.
2. Write the minimum amount of code necessary to pass the test.
3. Refactor the code for quality (remove duplication, improve structure).
4. Repeat the process.

This cycle ensures that every piece of functionality in the system is covered by tests, making the software more robust and less prone to bugs. It also encourages developers to think about the design and requirements of their software before they begin coding.

Behavior Driven Development (BDD)

BDD, on the other hand, is an extension of TDD that emphasizes collaboration between developers, QA and non-technical or business…