Stress test your Go packages

stress.sh

Source: https://dave.cheney.net/2013/06/19/stress-test-your-go-packages

Stress test your Go packages
This is a short post on stress testing your Go packages. 
Concurrency or memory correctness errors are more likely to show up 
at higher concurrency levels (higher values of GOMAXPROCS). 
I use this script when testing my packages, or when reviewing code that goes into the standard library.

#!/usr/bin/env bash -e

go test -c
# comment above and uncomment below to enable the race builder
# go test -c -race
PKG=$(basename $(pwd))

while true ; do 
        export GOMAXPROCS=$[ 1 + $[ RANDOM % 128 ]]
        ./$PKG.test $@ 2>&1
done
I keep this script in $HOME/bin so usage is

$ cd $SOMEPACKAGE
$ stress.bash
PASS
PASS
PASS
You can pass additional arguments to your test binary on the command line,

stress.sh -test.v -test.run=ThisTestOnly
The goal is to be able to run the stress test for as long as you want without a test failure. 
Once you achieve that, uncomment go test -c -race and try again.