Golang on Simple Enough Blog

Using Constants in TDD with Go

Tue, 23 Dec 2025 10:08:49 +0200

Best Practices, Pitfalls, and Design Signals

Test-Driven Development (TDD) is not only about writing tests.
Its primary purpose is to design software.

In Go, the use of constants is often misunderstood in TDD:

should they be exposed?
tested?
injected?
avoided?

This article proposes a pragmatic and idiomatic Go approach, based on real-world experience, to understand when a constant represents good design… and when it hides a deeper problem.

Interfaces, Functions and Modules in Go: Structuring Your Code for TDD Without Adding Unnecessary Complexity

Mon, 15 Dec 2025 10:08:49 +0200

I. Introduction

Go is a minimalist language, but this simplicity can sometimes make developers feel like something is “missing” — especially when dealing with more advanced architectures, Test-Driven Development, or the need to mock dependencies. Developers coming from Java, C#, or Python often ask the same questions:

Should I turn all my functions into structs + interfaces to test them?
How should I organize my packages to keep them modular and testable?
Where should interfaces live — in the provider or the consumer?
How do I isolate a package that only exports functions?
How does Go automatically detect signature changes?

II. Go’s Model: Simple, Modular, but Different

Unlike Java or C#, Go does not rely on inheritance, classes, or heavy dependency injection frameworks.

How to Handle Optional Parameters in Go

Sat, 15 Nov 2025 10:00:00 +0200

I. How to Handle Optional Parameters in Go

In most modern languages, you can define default values for function parameters or overload functions to cover various use cases.
Go, however, offers no optional parameters, no overloading, and no default values in function signatures.
Yet the needs remain the same: creating readable, stable APIs that can evolve without breaking users.

Reverse

Tue, 25 Feb 2025 00:00:00 +0000

Visualization tool. Triggering a scan to generate IaC for AWS. Infrastructure History.