What is a testing pyramid?

The testing pyramid is a concept that describes the balance between different types of tests in a project to ensure quality and efficiency.

It looks like a pyramid with a broad base of unit tests, a smaller layer of integration tests, and a narrow top of UI/end-to-end tests.

Main ideas:

• Unit tests are fast, isolated, and cover logic at the function and method level.
• Integration tests check the interaction between components.
• UI/end-to-end tests simulate user behavior but are slow and fragile.

In Go, as in other languages, adhering to this pyramid helps keep tests fast, reliable, and maintainable.