org.scalajs.testing.adapter.JSEnvRPC$RunTerminatedException when trying to use scalatest with scalajs - scala

Question

I am trying to use scalatest for testing scalajs but it throwing exceptions. Not sure what could be the issue. Any suggestions, please? TIA.
Another thing that I would like to mention is that the following exception was being thrown even without any test file.
Build.sbt
ThisBuild / scalaVersion := "2.12.10"
lazy val root = project.in(file(".")).aggregate(parser.js, parser.jvm).
settings(
publish := {},
publishLocal := {},
)
lazy val parser = crossProject(JSPlatform, JVMPlatform).in(file(".")).
settings(
name := "rules-parser",
version := "0.1",
libraryDependencies ++= Seq(
"com.lihaoyi" %%% "fastparse" % "2.2.4",
"com.chuusai" %%% "shapeless" % "2.4.0-M1",
"org.scalactic" %%% "scalactic" % "3.2.2",
"org.scalatest" %%% "scalatest" % "3.3.0-SNAP2" % Test
)
).
jsSettings(
// scalaJSUseMainModuleInitializer := true,
libraryDependencies ++= Seq(
"org.scala-js" %%% "scalajs-dom" % "1.1.0",
"com.lihaoyi" %%% "scalatags" % "0.9.2"
)
).
jvmSettings(
libraryDependencies ++= Seq(
"org.scala-js" %% "scalajs-stubs" % "1.0.0" % "provided"
)
)
js/test/scala/example/ExampleSpec.scala
package example
import org.scalatest.flatspec.AnyFlatSpec
import org.scalatest.matchers.must.Matchers
object ExampleSpec extends AnyFlatSpec with Matchers {
"Simple test" should "pass" in {
assert(1 == 1)
}
}
Exception
sbt:root> last parserJS / Test / loadedTestFrameworks
[debug] Starting process: node
[error] org.scalajs.testing.common.RPCCore$ClosedException: org.scalajs.testing.adapter.JSEnvRPC$RunTerminatedException
[error] at org.scalajs.testing.common.RPCCore.helpClose(RPCCore.scala:223)
[error] at org.scalajs.testing.common.RPCCore.call(RPCCore.scala:164)
[error] at org.scalajs.testing.adapter.TestAdapter.loadFrameworks(TestAdapter.scala:57)
[error] at org.scalajs.sbtplugin.ScalaJSPluginInternal$.$anonfun$scalaJSTestSettings$4(ScalaJSPluginInternal.scala:597)
[error] at scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error] at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
[error] at sbt.std.Transform$$anon$4.work(Transform.scala:68)
[error] at sbt.Execute.$anonfun$submit$2(Execute.scala:282)
[error] at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:23)
[error] at sbt.Execute.work(Execute.scala:291)
[error] at sbt.Execute.$anonfun$submit$1(Execute.scala:282)
[error] at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
[error] at sbt.CompletionService$$anon$2.call(CompletionService.scala:64)
[error] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[error] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[error] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[error] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[error] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[error] at java.lang.Thread.run(Thread.java:748)
[error] Caused by: org.scalajs.testing.adapter.JSEnvRPC$RunTerminatedException
[error] at org.scalajs.testing.adapter.JSEnvRPC.$anonfun$new$1(JSEnvRPC.scala:38)
[error] at org.scalajs.testing.adapter.JSEnvRPC.$anonfun$new$1$adapted(JSEnvRPC.scala:38)
[error] at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:64)
[error] at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1402)
[error] at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
[error] at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
[error] at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
[error] at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
[error] Caused by: java.io.IOException: Cannot run program "node": error=2, No such file or directory
[error] at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
[error] at org.scalajs.jsenv.ExternalJSRun$.startProcess(ExternalJSRun.scala:143)
[error] at org.scalajs.jsenv.ExternalJSRun$.start(ExternalJSRun.scala:40)
[error] at org.scalajs.jsenv.nodejs.NodeJSEnv.internalStart(NodeJSEnv.scala:63)
[error] at org.scalajs.jsenv.nodejs.NodeJSEnv.$anonfun$startWithCom$1(NodeJSEnv.scala:47)
[error] at org.scalajs.jsenv.nodejs.ComRun$.start(ComSupport.scala:214)
[error] at org.scalajs.jsenv.nodejs.NodeJSEnv.startWithCom(NodeJSEnv.scala:46)
[error] at org.scalajs.testing.adapter.JSEnvRPC.<init>(JSEnvRPC.scala:25)
[error] at org.scalajs.testing.adapter.TestAdapter.startManagedRunner(TestAdapter.scala:129)
[error] at org.scalajs.testing.adapter.TestAdapter.$anonfun$getRunnerForThread$1(TestAdapter.scala:120)
[error] at scala.collection.concurrent.TrieMap.getOrElseUpdate(TrieMap.scala:897)
[error] at org.scalajs.testing.adapter.TestAdapter.getRunnerForThread(TestAdapter.scala:120)
[error] at org.scalajs.testing.adapter.TestAdapter.loadFrameworks(TestAdapter.scala:56)
[error] at org.scalajs.sbtplugin.ScalaJSPluginInternal$.$anonfun$scalaJSTestSettings$4(ScalaJSPluginInternal.scala:597)
[error] at scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error] at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
[error] at sbt.std.Transform$$anon$4.work(Transform.scala:68)
[error] at sbt.Execute.$anonfun$submit$2(Execute.scala:282)
[error] at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:23)
[error] at sbt.Execute.work(Execute.scala:291)
[error] at sbt.Execute.$anonfun$submit$1(Execute.scala:282)
[error] at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
[error] at sbt.CompletionService$$anon$2.call(CompletionService.scala:64)
[error] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[error] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[error] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[error] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[error] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[error] at java.lang.Thread.run(Thread.java:748)
[error] Caused by: java.io.IOException: error=2, No such file or directory
[error] at java.lang.UNIXProcess.forkAndExec(Native Method)
[error] at java.lang.UNIXProcess.<init>(UNIXProcess.java:247)
[error] at java.lang.ProcessImpl.start(ProcessImpl.java:134)
[error] at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
[error] at org.scalajs.jsenv.ExternalJSRun$.startProcess(ExternalJSRun.scala:143)
[error] at org.scalajs.jsenv.ExternalJSRun$.start(ExternalJSRun.scala:40)
[error] at org.scalajs.jsenv.nodejs.NodeJSEnv.internalStart(NodeJSEnv.scala:63)
[error] at org.scalajs.jsenv.nodejs.NodeJSEnv.$anonfun$startWithCom$1(NodeJSEnv.scala:47)
[error] at org.scalajs.jsenv.nodejs.ComRun$.start(ComSupport.scala:214)
[error] at org.scalajs.jsenv.nodejs.NodeJSEnv.startWithCom(NodeJSEnv.scala:46)
[error] at org.scalajs.testing.adapter.JSEnvRPC.<init>(JSEnvRPC.scala:25)
[error] at org.scalajs.testing.adapter.TestAdapter.startManagedRunner(TestAdapter.scala:129)
[error] at org.scalajs.testing.adapter.TestAdapter.$anonfun$getRunnerForThread$1(TestAdapter.scala:120)
[error] at scala.collection.concurrent.TrieMap.getOrElseUpdate(TrieMap.scala:897)
[error] at org.scalajs.testing.adapter.TestAdapter.getRunnerForThread(TestAdapter.scala:120)
[error] at org.scalajs.testing.adapter.TestAdapter.loadFrameworks(TestAdapter.scala:56)
[error] at org.scalajs.sbtplugin.ScalaJSPluginInternal$.$anonfun$scalaJSTestSettings$4(ScalaJSPluginInternal.scala:597)
[error] at scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error] at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
[error] at sbt.std.Transform$$anon$4.work(Transform.scala:68)
[error] at sbt.Execute.$anonfun$submit$2(Execute.scala:282)
[error] at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:23)
[error] at sbt.Execute.work(Execute.scala:291)
[error] at sbt.Execute.$anonfun$submit$1(Execute.scala:282)
[error] at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
[error] at sbt.CompletionService$$anon$2.call(CompletionService.scala:64)
[error] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[error] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[error] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[error] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[error] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[error] at java.lang.Thread.run(Thread.java:748)
[error] (parserJS / Test / loadedTestFrameworks) org.scalajs.testing.common.RPCCore$ClosedException: org.scalajs.testing.adapter.JSEnvRPC$RunTerminatedException

Answer 1

From this: Cannot run program "node": error=2, No such file
It looks like you need to install node.js. If it's already installed, make sure it is on your path.