Golang Stack Trace on Error
June 22, 2015
One of the great features of Go is its testing package. The testing package has streamlined our unit-testing and test-driven development.
One addition we found useful was the implementation of stack-traces on certain types of errors. Since our testing suite consisted of a lot of functions that were called repeatedly, tracing out the stack made tracking down failed tests much easier.
Here’s how to implement a stack trace in Golang:
Golang log stack trace Example
1 import (
2 "log"
3 "runtime"
4 "testing"
5 )
6
7 func (t *testing.T) TestFunction(err bool){
8 if err {
9 //stack trace
10 var stack [4096]byte
11 runtime.Stack(stack[:], false)
12 log.Printf("%s\n", stack[:])
13
14 //fatal error
15 t.Fatalf("Error!")
16 }
17 }