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

There is already a messageSource in unit tests in Grails, it is a StaticMessageSource (see http://static.springsource.org/spring/docs/2.5.4/api/org/springframework/context/support/StaticMessageSource.html), you can add mock messages with the addMessage method:

messageSource.addMessage("foo.bar", request.locale, "My Message")