Relevance of TDD in current software era

Introduction

Laymen explanation

In layman’s terms, Test Driven Development (TDD) is a software development practice that focuses on creating unit test cases before developing the actual code. It is an iterative approach that combines programming, the creation of unit tests, and refactoring.

Technical explanation

Test Driven Development (TDD) is software development approach in which test cases are developed to specify and validate what the code will do.

Test-driven development (TDD) is a software development process relying on software requirements being converted to test cases before software is fully developed, and tracking all software development by repeatedly testing the software against all test cases.

TDD workflow

Features

• In TDD, you achieve 100% coverage test. Every single line of code is tested, unlike traditional testing.

• It is customer focussed since test-cases are focussed on customer use-cases

TDD levels

Testing types

• • Unit testing

  • Integration testing

  • Acceptance testing

Testing tools

• • Unit framework

  • Chaos monkey

  • Latency monkey

  • Janitor monkey

Test-cases best practices

• • Treat test code like production code

  • Write Maintainable test-cases

  • +ve and -ve test cases both

  • Review test cases by team

  • Its good to write test-cases beforehand

Testing anti-patterns

• • Execution order of tests should not matter

  • Tests should focus on what not how. So, test-case should not focus implementation detail.

  • A test failure should not cause cascading failures/(false +ves)

Challenges of TDD

• Holes in the tests

• Technical debt can creep into each of the three stages of the TDD process

TDD and CICD

TDD and agile

Reference

https://en.wikipedia.org/wiki/Test-driven_development

https://images.app.goo.gl/uKypztMaLDGjsAkdA

https://www.guru99.com/test-driven-development.html

https://www.browserstack.com/guide/what-is-test-driven-development

https://www.sealights.io/agile-testing/test-driven-development-and-the-dangers-of-hidden-technical-debt/

https://images.app.goo.gl/V2DnX8NgtqRJJ9LU6

https://images.app.goo.gl/xh5r93FwgY5uJgmB9