Creating a Table-Driven Test Template in Elixir

Jonathan Palardy describes a method for creating table-driven tests in Elixir using the ExUnit framework. The article begins by demonstrating a simple template for parameterizing tests without requiring additional libraries. Palardy explains how the @tag annotation in ExUnit can merge tag values into the test context, allowing for flexible test customization. The author provides an in-depth explanation of the motivation behind table-driven tests, such as reducing duplication and boilerplate in test code. He also covers common pitfalls, like compile-time vs. runtime errors, and proposes solutions to make the template both functional and maintainable. Throughout the article, code examples illustrate each step, from basic concepts to advanced usage, and how to handle failures more effectively.