Run commands and tests on multiple ruby versions. (ruby-build/chruby version)

mrun

#!/bin/bash

# A bash function/script used to run commands and tests using all the
# ruby-build-installed and chruby-managed versions of ruby on the system.

# Usage: mrun [command | script name]
#
# Without arguments, mrun will look for an executable file named run and run
# it. If an executable named run is not found, it will run rake. When given
# an argument (a script or a command, like bundle), it will run it with every
# installed ruby.

# Source chruby so we can use it as a function
source /usr/local/opt/chruby/share/chruby/chruby.sh

SELF=`basename $0`
RUBIES_DIR=$HOME/.rubies

RUNFILE_EXT=run
RUNFILE_DIR=runs
LAUNCH_DIR=`pwd`
VERSIONS=`ls $RUBIES_DIR`
DIVIDER="----------------------------------------------------------------------"

function passed() { echo "$(tput setaf 2)${1}$(tput sgr 0)"; }
function failed() { echo "$(tput setaf 1)${1}$(tput sgr 0)"; }

function check_run() {
  PERCENT=`egrep '^[0-9]+% passed' $2`
  if  [[ $PERCENT == 100* ]]; then
    passed "$1: $PERCENT"
  else
    STATS=`egrep '^[0-9]+ tests, [0-9]+ assertions' $2`
    if [ ! -z "$STATS" -a "$STATS" != " " ]; then
      failed "$STATS"
    else
      failed 'Error'
    fi
  fi
}

function mrun() {
  versions=($VERSIONS)

  echo "Running '$@' with ${#versions[@]} ruby versions"
  echo $DIVIDER
  for version in ${versions[@]}
  do
    chruby ${version}

    if [ -n "$CHECK_RUN" ]; then
      OUTPUT_FILE=$RUNFILE_DIR/${version}.$RUNFILE_EXT

      "$@" > $OUTPUT_FILE 2>&1

      check_run $version $OUTPUT_FILE
    else
      "$@"
    fi

    echo $DIVIDER
  done
}

echo "$SELF in $LAUNCH_DIR"

if [ $# -gt 0 ]; then
  case "$1" in
    'clean')
      if [ -d $RUNFILE_DIR ]; then
        echo "Cleaning version run files"
        rm -f $RUNFILE_DIR/*.$RUNFILE_EXT
      else
        echo "No run file directory named $RUNFILE_DIR found in $LAUNCH_DIR"
      fi
      ;;

    *)
      mrun "$@"
      ;;
  esac
else
  CHECK_RUN=1

  if [ ! -d $RUNFILE_DIR ]; then
    mkdir $RUNFILE_DIR
  fi

  if [ -x "$LAUNCH_DIR/run" ]; then
    mrun ./run
  else
    mrun rake
  fi
fi