Better debugging for rails tests: logs and custom output to stdout

test_helper.rb

# run it as DEBUG=true rails test
if ENV['DEBUG']

  Rails.logger = Logger.new(STDOUT)
  Rails.logger.level = Logger::INFO
  Rails.logger.datetime_format = ""
  Rails.logger.formatter = proc do |severity, _time, _progname, msg|
    "#{severity.green}: #{msg}\n"
  end
  
  # to see database queries
  # run it as DEBUG=db rails test
  ActiveRecord::Base.logger = ActiveSupport::Logger.new(STDOUT) if ENV['DEBUG'] == 'db'
end    

# special output which works in debug
def echo(msg)
  return unless ENV['DEBUG']
  puts msg.blue
end