zet

Use log in Go Tests

It wasn’t until recently that I discovered that log.Print() and cousins are completely usable from within every possible Go test case. All you have to do is change the log output to os.Stdout temporarily and turn off the log.Flags so that get consistent output:

func ExampleStack_invalid_JSON_Types() {
	defer log.SetOutput(os.Stderr)
	defer log.SetFlags(log.Flags())
	log.SetOutput(os.Stdout)
	log.SetFlags(0)
	log.Print("something")
	// Output:
	// something 
}

#golang #coding #tips #log #testing #debugging

This site is open source. Improve this page.