Basic Response and Redirect Assertions in Bash

domain_assert

#!/bin/bash

NC='\033[0m'
RED='\033[0;31m'
GREEN='\033[0;32m'

function assert_success() {
  request=`curl -s --head $1`
  success=`grep "HTTP/1.1 200 OK" <<< "${request}"`
  if [ -z "${success}" ]
  then
    printf "${NC}$1 [${RED}200 ERROR${NC}]\n"
  else
    printf "${NC}$1 [${GREEN}200 OK${NC}]\n"
  fi
}

function assert_redirect() {
  request=`curl -s --head $1`
  response_code=`grep "HTTP/1.1 301 Moved Permanently" <<< "${request}"`
  redirect_location=`grep "Location: $2" <<< "${request}"`
  if [ -z "${response_code}" ] || [ -z "${redirect_location}" ]
  then
    printf "${NC}$1 => $2 [${RED}301 ERROR${NC}]\n"
  else
    printf "${NC}$1 => $2 [${GREEN}301 OK${NC}]\n"
  fi
}


# Usage
# –––––
#
# assert_success "https://www.amazon.com"
# assert_redirect "http://amazon.com" "https://www.amazon.com"
#

Why?

Configuring servers (especially if they are live) can be scary if you're not using Ansible, Chef, or some other provisioning tool. If you have a bunch of complicated http and https settings you need to implement it's worth writing a simple test script that asserts domains and servers are responding like you expect.

How does this help?

The simple functions included in this Gist make it super easy to write a basic smoke test. Just include this Gist in a shell file, add some assertions at the bottom of the file, and run it.