test_version_comparision

#!/usr/bin/env bash
function unify_version {
  printf "%03d%03d%03d" $(echo "$1"| sed -e 's/-rc[0-9]//' | tr '.' ' ');
}

testvercomp () {
  if [[ "$(unify_version "$1")" > "$(unify_version "$2")" ]]
  then
    result='>'
  elif [[ "$(unify_version "$1")" < "$(unify_version "$2")" ]]
  then
    result='<'
  else
    result='='
  fi

  if [[ $result != "$3" ]]
  then
      echo "FAIL: Expected '$3', Actual '$result', Arg1 '$1', Arg2 '$2'"
  else
      echo "Pass: '$1 $result $2'"
  fi
}

echo "The following tests should pass"
testvercomp '1'            '1'            '='
testvercomp '2.1'          '2.2'          '<'
testvercomp '3.0.4-rc0'    '3.0.4'        '='
testvercomp '4.8-rc1'      '4.8-rc0'      '='
testvercomp '3.2.1'        '3.2'          '>'
testvercomp '3.2'          '3.2.1'        '<'
testvercomp '1.2'          '2.1'          '<'
testvercomp '2.1'          '1.2'          '>'
testvercomp '5.6.7'        '5.6.7'        '='
testvercomp '1.01.1'       '1.1.1'        '='
testvercomp '1.1.1'        '1.01.1'       '='
testvercomp '1'            '1.0'          '='
testvercomp '1.0'          '1'            '='
testvercomp '1.0.2'        '1.0.2'        '='
testvercomp '1..0'         '1.0'          '='
testvercomp '1.0'          '1..0'         '='