bugfix: Use actual method arguments from DAP server interface

Previously we would use LaunchRequestArguments, but those are actually not used and what is actually returned is a Map. This become a problem after the fix that deserialized arguments to correct params.

Now, we use Map instead.

Raised the issue here eclipse-lsp4j/lsp4j#842

Also fixed tests to use newest toolkit instead.

Author: tgodzik

metals/src/main/scala/scala/meta/internal/metals/debug/DebugProtocol.scala

@@ -12,7 +12,6 @@ import com.google.gson.JsonElement
 import org.eclipse.lsp4j.debug.CompletionsArguments
 import org.eclipse.lsp4j.debug.DisconnectArguments
 import org.eclipse.lsp4j.debug.InitializeRequestArguments
-import org.eclipse.lsp4j.debug.LaunchRequestArguments
 import org.eclipse.lsp4j.debug.OutputEventArguments
 import org.eclipse.lsp4j.debug.SetBreakpointsArguments
 import org.eclipse.lsp4j.debug.SetBreakpointsResponse
@@ -137,11 +136,16 @@ object DebugProtocol {
   object LaunchRequest {
     def unapply(request: DebugRequestMessage): Option[DebugMode] = {
       if (request.getMethod != "launch") None
-      else
-        parse[LaunchRequestArguments](request.getParams).toOption.map {
-          case args if args.getNoDebug => DebugMode.Disabled
-          case _ => DebugMode.Enabled
-        }
+      else {
+        parse[java.util.Map[String, Object]](request.getParams).toOption
+          .map { map =>
+            map.asScala.get("noDebug") match {
+              case Some(value: java.lang.Boolean) if value => DebugMode.Disabled
+              case Some(value: java.lang.Boolean) if !value => DebugMode.Enabled
+              case _ => DebugMode.Enabled
+            }
+          }
+      }
     }
   }
 

tests/slow/src/test/scala/tests/scalacli/ScalaCliSuite.scala

@@ -12,6 +12,7 @@ import scala.meta.internal.metals.ServerCommands
 import scala.meta.internal.metals.debug.TestDebugger
 import scala.meta.internal.metals.scalacli.ScalaCli
 import scala.meta.internal.metals.{BuildInfo => V}
+import scala.meta.internal.mtags.CoursierComplete
 
 import org.eclipse.{lsp4j => l}
 import tests.FileLayout
@@ -472,14 +473,21 @@ class ScalaCliSuite extends BaseScalaCliSuite(V.scala3) {
     } yield ()
   }
 
+  val coursierComplete = new CoursierComplete(scalaVersion)
+  val newestToolkit: String = coursierComplete
+    .complete("org.scala-lang::toolkit:")
+    .headOption
+    .map(_.split(":").last)
+    .getOrElse("default")
+
   test("properly-reindex") {
     cleanWorkspace()
     server.client.importBuild = Messages.ImportBuild.yes
     for {
       _ <- scalaCliInitialize(useBsp = true)(
         s"""|/Main.scala
-            |//> using scala 2.13.11
-            |// > using toolkit default
+            |//> using scala ${scalaVersion}
+            |// > using toolkit ${newestToolkit}
             |
             |object Main {
             |    println(os.pwd)
@@ -491,7 +499,7 @@ class ScalaCliSuite extends BaseScalaCliSuite(V.scala3) {
       _ <- server.didOpen("Main.scala")
       _ = assertEquals(
         server.client.workspaceDiagnostics,
-        """|Main.scala:5:13: error: not found: value os
+        """|Main.scala:5:13: error: Not found: os
            |    println(os.pwd)
            |            ^^
            |""".stripMargin,