Tests are great, provided they actually test something. But are your tests too optimistic (assuming the code already works), or too persnickety (testing the irrelevant)?
All tagged golden file
The txtar format: input data and golden files for Go tests
The txtar format is an ingenious way to supply arbitrary files and folder structures to test scripts. We’ll also learn about file management, simulating standard input, and breaking up scripts into phases.
testscript: a DSL for testing CLI tools in Go
The testscript package gives us an easy way to test the behaviour of a Go CLI tool, by executing it as an independent binary. Let’s see how.