Contents

#!/bin/bash
set -euo pipefail

# utility for comparing version strings
# https://stackoverflow.com/questions/4023830/how-to-compare-two-strings-in-dot-separated-version-format-in-bash
function version { echo "$@" | awk -F. '{ printf("%d%03d%03d%03d\n", $1,$2,$3,$4); }'; }

# store current Ruby version and restore it on exit
original_ruby_version=$(cat .ruby-version)
trap "rbenv local $original_ruby_version" EXIT

# determine employed Ruby versions (awk command == "strip whitespace", sed command == "delete_prefix")
readarray -t versions < <(grep ruby: .github/workflows/test.yml | awk '{$1=$1};1' | sed 's/- ruby: //' | sort | uniq)
echo "Detected Ruby versions:"
for version in "${versions[@]}"
do
  echo "- $version"
done
echo ""

for version in "${versions[@]}"
do
  # switch Ruby version
  rbenv local "$version"

  # determine actual versions
  ruby_version=$(ruby -v)
  rubygems_version=$(gem -v)
  bundler_version=$(bundler -v | sed 's/Bundler version //')

  # debug output
  echo "====================="
  echo "Target Ruby version: $version"
  echo ""
  echo "Ruby: $ruby_version"
  echo "rubygems: $rubygems_version"
  echo "Bundler: $bundler_version"
  echo "====================="
  echo ""

  # version checks (minimum versions to make 'BUNDLED WITH' in Gemfile.lock work correctly)
  if [ $(version $rubygems_version) -lt $(version "3.3.0") ]; then
    echo "Please ensure that your rubygems version is > 3.3.0 for Ruby $ruby_version!"
    echo "Install newest version:"
    echo "gem update --system"
    echo "Install specific version:"
    echo "gem update --system <version>"
    exit 1
  fi

  if [ $(version $bundler_version) -lt $(version "2.3.0") ]; then
    echo "Please ensure that your Bundler version is > 2.3.0 for Ruby $ruby_version!"
    echo "Install newest version:"
    echo "gem install bundler"
    echo "Install specific version:"
    echo "gem install bundler:<version>"
    exit 1
  fi

  # bundle and run specs
  rake matrix:install
  rake matrix:spec
done

exit 0

Version data entries

4 entries across 4 versions & 2 rubygems

Version	Path
memoized-1.1.2	bin/matrix
gemika-0.8.4	bin/matrix
gemika-0.8.3	bin/matrix
gemika-0.8.2	bin/matrix