Golang: Test-Driven Development(TDD) with Gin and MySQL

Test-Driven Development (TDD) is a software development technique in which You write tests for a piece of code before you write the code.

We write tests to define the desired behavior of the code and to ensure that the code meets those requirements.

The process of writing the tests first helps to ensure that the code is testable and that it meets the requirements of the user or client.

TDD helps to catch bugs early in the development process and to ensure that the code is maintainable and easy to understand.

It also promotes a test-first mindset and encourages the developer to think about the requirements and desired behavior of the code before writing it.

Throughout this blog, I’ll assume you’re familiar with the basics of Golang, like package importing and all.

Table of Contents

• How TDD works?
• Define API Routes, Struct, and functions
• Create a User using TDD
• Get the User using TDD
• Update User using TDD
• Delete User using TDD
• Final Thoughts

How TDD works?
TDD is an iterative process that follows these steps.

1. Write a test for a small piece of functionality that doesn’t exist yet.
2. Run the test, which should fail because the code doesn’t exist yet.
3. Write the minimum amount of code necessary to make the test pass.
4. Rerun the test, which should now pass because the code has been written.
5. Refactor the code if necessary, making sure that all tests still pass.
6. Repeat the process for the next piece of functionality.

Let’s examine the above steps with a basic example of a sum function, which calculates the sum of two values.

For detailed posts with code examples, check out our Canopas Blog.

The goal of TDD is to ensure that the code meets the requirements and behaves as expected by constantly testing the code during the development process.

This can help to catch bugs early on, improve code quality, and increase confidence in the software.

TDD is an iterative process that begins with writing a test, running it to confirm it fails, then writing the minimum amount of code to make the test pass and repeating this process until the feature is complete.