How to unit or integration test use of injected messageSource for i18n in Grails 2.0 service

Question

I make use of a message bundle in one of my services in a Grails 2.0 project for internationalized text. The use case is an email subject that is sent via the mail plugin in

Answer 1

In unit tests and the local side of functional tests, sometimes you want the real properties that are in the 18n directory.

This works for me:

  MessageSource getI18n() {
    // assuming the test cwd is the project dir (where application.properties is)
    URL url = new File('grails-app/i18n').toURI().toURL()
    def messageSource = new ResourceBundleMessageSource()
    messageSource.bundleClassLoader = new URLClassLoader(url)
    messageSource.basename = 'messages'
    messageSource
  }

  i18n.getMessage(key, params, locale)