How Go Tests "go test"

The post dives into the evolution of how the Go team tests the 'go' tool, focusing on different strategies for testing CLI tools. It covers the transition from using a bash script ('test.bash') to 'testgo' in Go, and finally to a more advanced 'script_test.go'. The post introduces 'testscript', a package that allows for testing CLI tools with a shell-like script language in Go, demonstrating its application with examples from the Atlas project.