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path: root/activerecord/test/support/config.rb
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# frozen_string_literal: true

require "yaml"
require "erb"
require "fileutils"
require "pathname"

module ARTest
  class << self
    def config
      @config ||= read_config
    end

    private
      def config_file
        Pathname.new(ENV["ARCONFIG"] || TEST_ROOT + "/config.yml")
      end

      def read_config
        unless config_file.exist?
          FileUtils.cp TEST_ROOT + "/config.example.yml", config_file
        end

        erb = ERB.new(config_file.read)
        expand_config(YAML.parse(erb.result(binding)).transform)
      end

      def expand_config(config)
        config["connections"].each do |adapter, connection|
          dbs = [["arunit", "activerecord_unittest"], ["arunit2", "activerecord_unittest2"],
                 ["arunit_without_prepared_statements", "activerecord_unittest"]]
          dbs.each do |name, dbname|
            unless connection[name].is_a?(Hash)
              connection[name] = { "database" => connection[name] }
            end

            connection[name]["database"] ||= dbname
            connection[name]["adapter"]  ||= adapter
          end
        end

        config
      end
  end
end