chore: Fix Scala 3 migration tests compilation (#577)

Author: johanandren

migration-tests/src/test/scala/akka/persistence/r2dbc/migration/MigrationChangeHandler.scala

@@ -6,7 +6,6 @@ package akka.persistence.r2dbc.migration
 
 import scala.concurrent.ExecutionContext
 import scala.concurrent.Future
-
 import akka.Done
 import akka.actor.typed.ActorSystem
 import akka.persistence.Persistence
@@ -15,6 +14,8 @@ import akka.persistence.query.UpdatedDurableState
 import akka.persistence.r2dbc.session.scaladsl.R2dbcSession
 import akka.persistence.r2dbc.state.scaladsl.ChangeHandler
 
+import scala.annotation.nowarn
+
 class MigrationChangeHandler(system: ActorSystem[_]) extends ChangeHandler[Any] {
 
   private val incrementSql =
@@ -25,6 +26,7 @@ class MigrationChangeHandler(system: ActorSystem[_]) extends ChangeHandler[Any]
 
   println(incrementSql)
 
+  @nowarn("msg=exhaustive")
   override def process(session: R2dbcSession, change: DurableStateChange[Any]): Future[Done] = {
     println("process changer")
     change match {

migration-tests/src/test/scala/akka/persistence/r2dbc/migration/MigrationToolSpec.scala

@@ -496,7 +496,9 @@ class MigrationToolSpec
     "migrate durable state of one persistenceId with change handler" in {
       if (hasChangeHandler) {
         import akka.persistence.r2dbc.internal.Sql.InterpolationWithAdapter
-        import r2dbcSettings.codecSettings.DurableStateImplicits._
+        // Scala 3 needs the extra step here
+        val durableStateImplicits = r2dbcSettings.codecSettings.DurableStateImplicits
+        import durableStateImplicits._
         val pid = PersistenceId.ofUniqueId(nextPid())
         val slice = persistenceExt.sliceForPersistenceId(pid.id)
 
@@ -524,7 +526,9 @@ class MigrationToolSpec
     "migrate durable state of one persistenceId with additional column" in {
       if (hasAdditionalColumn) {
         import akka.persistence.r2dbc.internal.Sql.InterpolationWithAdapter
-        import r2dbcSettings.codecSettings.DurableStateImplicits._
+        // Scala 3 needs the extra step here
+        val durableStateImplicits = r2dbcSettings.codecSettings.DurableStateImplicits
+        import durableStateImplicits._
         val pid = PersistenceId.ofUniqueId(nextPid())
         persistDurableState(pid, "s-column")
         migration.migrateDurableState(pid.id).futureValue shouldBe 1L