test_on_multiple_environments.sh

#!/bin/bash
#
# rbenv version

set -e

source /usr/local/share/chruby/chruby.sh
RUBIES=(~/.rbenv/versions/* ~/.rubies/*)

function run {
  chruby $RUBY_VERSION

  for version in 2.2.6 2.4.4 2.5.4 2.6.3 2.6.4 2.7.1; do
    echo "Running bundle exec ruby test/mail_test.rb against mail $version using $RUBY_VERSION..."
    rm -f Gemfile.lock
    MAIL_GEM_VERSION=$version bundle install
    MAIL_GEM_VERSION=$version bundle exec ruby -Itest test/mail_test.rb
  done

  gem list --local bundler | grep bundler || gem install bundler --no-ri --no-rdoc

  RAILS_VERSIONS=(4.0.13 4.1.16 4.2.10 5.0.7.2 5.1.7 5.2.3)

  for version in ${RAILS_VERSIONS[@]}; do
    rm -f Gemfile.lock
    echo "Running bundle exec rspec spec against actionmailer $version using $RUBY_VERSION..."
    if test $version = "3.2.22.5"; then
      mail_gem_version=2.5.4
    else
      mail_gem_version=2.6.4
    fi
    MAIL_GEM_VERSION=$mail_gem_version MAIL_ISO_2022_JP_RAILS_VERSION=$version bundle install
    MAIL_GEM_VERSION=$mail_gem_version MAIL_ISO_2022_JP_RAILS_VERSION=$version bundle exec rake test_all
  done
}

function run_for_rails6 {
  chruby $RUBY_VERSION

  gem list --local bundler | grep bundler || gem install bundler --no-ri --no-rdoc

  RAILS_VERSIONS=(6.0.0)

  for version in ${RAILS_VERSIONS[@]}; do
    rm -f Gemfile.lock
    echo "Running bundle exec rspec spec against actionmailer $version using $RUBY_VERSION..."
    if test $version = "3.2.22.5"; then
      mail_gem_version=2.5.4
    else
      mail_gem_version=2.7.1
    fi
    MAIL_GEM_VERSION=$mail_gem_version MAIL_ISO_2022_JP_RAILS_VERSION=$version bundle install
    MAIL_GEM_VERSION=$mail_gem_version MAIL_ISO_2022_JP_RAILS_VERSION=$version bundle exec rake test_all
  done
}

export RUBY_VERSION=2.4.7
run

export RUBY_VERSION=2.5.6
run

export RUBY_VERSION=2.6.4
run
run_for_rails6

echo 'Success!'