What? Go check out any moderately popular library in Go (including packages in the standard library), and I bet you're fairly likely to see a `*_test.go` file s

What? Go check out any moderately popular library in Go (including packages in the standard library), and I bet you're fairly likely to see a `*_test.go` file somewhere (perhaps more than one). Unit testing in Go is refreshingly simple. And it comes standard with the Go toolchain.