(Play 2.4.2, Play Slick 1.0.0) How do I apply database Evolutions to a Slick managed database within a test? - playframework-2.4

Question

I would like to write database integration tests against a Play Slick managed database and apply and unapply Evolutions using the helper methods described in the Play documentation namely, Evolutions.applyEvolutions(database) and Evolutions.cleanupEvolutions(database). However these require a play.api.db.Database instance which is not possible to get hold of from what I can see. The jdbc library conflicts with play-slick so how do I get the database instance from slick? I use the following to get a slick database def for running slick queries:
val dbConfig = DatabaseConfigProvider.get[JdbcProfile]("my-test-db")(FakeApplication())
import dbConfig.driver.api._
val db = dbConfig.db
Thanks,
Leanne

Answer 1

Here is how I dow it with Guice:
I inject with Guice:
lazy val appBuilder = new GuiceApplicationBuilder()
lazy val injector = appBuilder.injector()
lazy val databaseApi = injector.instanceOf[DBApi] //here is the important line
(You have to import play.api.db.DBApi.)
And in my tests, I simply do the following (actually I use an other database for my tests):
override def beforeAll() = {
Evolutions.applyEvolutions(databaseApi.database("default"))
}
override def afterAll() = {
Evolutions.cleanupEvolutions(databaseApi.database("default"))
}
(I'm using Scalatest but it the same thing with an other testing framework.)