How to use in memory database with injected test with play java

Question

The play documentation about functional tests in java shows two modes

• using fakeApplication to specify a custom configuration (in memory database in the example)
• using dependency injection to configure the application

I would like to use dependency injection but I have to set custom configuration on application startup like the use of in memory database.

I cannot achieve to do that. I guess this has to be done in the guice builder but I don't know how.

Answer 1

I am assuming you are using Guice for DI.

The discussion on issue 4809 on the framework's github repo should help on answering your question.

I was able to make it work using one of the solutions on the issue:

       new GuiceApplicationBuilder()
            .configure((Map) Helpers.inMemoryDatabase())
            .in(Mode.TEST)         
            .build();