build.sbt

import com.typesafe.sbt.SbtMultiJvm
import com.typesafe.sbt.SbtMultiJvm.MultiJvmKeys.MultiJvm

val akkaVersion = "2.4.19"

val project = Project(
  id = "channels",
  base = file("."),
  settings = Project.defaultSettings ++ SbtMultiJvm.multiJvmSettings ++ Seq(
    name := "akka-sample-multi-node-scala",
    organization := "manning",
    version := "1.0",
    libraryDependencies ++= Seq(
    "com.typesafe.akka" %%  "akka-actor"              % akkaVersion,
    "com.typesafe.akka" %%  "akka-slf4j"              % akkaVersion,
    "com.typesafe.akka" %%  "akka-remote"             % akkaVersion,
    "com.typesafe.akka" %%  "akka-multi-node-testkit" % akkaVersion,
    "com.typesafe.akka" %%  "akka-contrib"            % akkaVersion,
    "com.typesafe.akka" %%  "akka-testkit"            % akkaVersion  % "test",
    "org.scalatest"     %%  "scalatest"               % "3.0.0"      % "test"
    ),
    // make sure that MultiJvm test are compiled by the default test compilation
    compile in MultiJvm <<= (compile in MultiJvm) triggeredBy (compile in Test),
    // disable parallel tests
    parallelExecution in Test := false,
    // make sure that MultiJvm tests are executed by the default test target,
    // and combine the results from ordinary test and multi-jvm tests
    executeTests in Test <<= (executeTests in Test, executeTests in MultiJvm) map {
      case (testResults, multiNodeResults)  =>
        val overall =
          if (testResults.overall.id < multiNodeResults.overall.id)
            multiNodeResults.overall
          else
            testResults.overall
        Tests.Output(overall,
          testResults.events ++ multiNodeResults.events,
          testResults.summaries ++ multiNodeResults.summaries)
    }
  )
) configs (MultiJvm)