Generate config for IDE tests with sbt-buildinfo

Author: Duhemm

language-server/test/dotty/tools/languageserver/util/server/TestServer.scala

@@ -12,18 +12,16 @@ import scala.collection.JavaConverters._
 
 class TestServer(testFolder: Path) {
 
-  // TODO initialise config file from DottyIDEPlugin
-  private val baseDir = java.nio.file.Paths.get("..").toAbsolutePath
-  private val ivyDir = java.nio.file.Paths.get("~/.ivy2").toAbsolutePath
-  private val javaHome = System.getProperty("java.home")
+  // Fill the configuration with values populated by sbt
+  private def showSeq[T](lst: Seq[T]): String = lst.map(elem => '"' + elem.toString + '"').mkString("[ ", ", ", " ]")
   private val dottyIdeJson: String =
     s"""[ {
        |  "id" : "dotty-ide-test",
-       |  "compilerVersion" : "0.6.0-bin-SNAPSHOT-nonbootstrapped",
-       |  "compilerArguments" : [ "-feature", "-deprecation", "-unchecked", "-Xfatal-warnings", "-encoding", "UTF8", "-language:existentials,higherKinds,implicitConversions" ],
-       |  "sourceDirectories" : [ "$baseDir/out/ide-tests/src" ],
-       |  "dependencyClasspath" : [ "$baseDir/library/../out/bootstrap/dotty-library-bootstrapped/scala-0.7/classes", "$ivyDir/cache/org.scala-lang/scala-library/jars/scala-library-2.12.4.jar" ],
-       |  "classDirectory" : "$baseDir/out/ide-tests/out"
+       |  "compilerVersion" : "${BuildInfo.ideTestsCompilerVersion}",
+       |  "compilerArguments" : ${showSeq(BuildInfo.ideTestsCompilerArguments)},
+       |  "sourceDirectories" : ${showSeq(BuildInfo.ideTestsSourceDirectories)},
+       |  "dependencyClasspath" : ${showSeq(BuildInfo.ideTestsDependencyClasspath)},
+       |  "classDirectory" : "${BuildInfo.ideTestsClassDirectory}"
        |}
        |]
     """.stripMargin

project/Build.scala

@@ -18,6 +18,9 @@ import dotty.tools.sbtplugin.DottyPlugin.autoImport._
 import dotty.tools.sbtplugin.DottyIDEPlugin.{ prepareCommand, runProcess }
 import dotty.tools.sbtplugin.DottyIDEPlugin.autoImport._
 
+import sbtbuildinfo.BuildInfoPlugin
+import sbtbuildinfo.BuildInfoPlugin.autoImport._
+
 /* In sbt 0.13 the Build trait would expose all vals to the shell, where you
  * can use them in "set a := b" like expressions. This re-exposes them.
  */
@@ -85,6 +88,13 @@ object Build {
   // Only available in vscode-dotty
   lazy val unpublish = taskKey[Unit]("Unpublish a package")
 
+  // Settings used to configure the test language server
+  lazy val ideTestsCompilerVersion = taskKey[String]("Compiler version to use in IDE tests")
+  lazy val ideTestsCompilerArguments = taskKey[Seq[String]]("Compiler arguments to use in IDE tests")
+  lazy val ideTestsSourceDirectories = taskKey[Seq[File]]("Source directories to use in IDE tests")
+  lazy val ideTestsDependencyClasspath = taskKey[Seq[File]]("Dependency classpath to use in IDE tests")
+  lazy val ideTestsClassDirectory = taskKey[File]("Class directory to use in IDE tests")
+
   // Settings shared by the build (scoped in ThisBuild). Used in build.sbt
   lazy val thisBuildSettings = Def.settings(
     organization := dottyOrganization,
@@ -789,6 +799,32 @@ object Build {
 
         runTask(Runtime, mainClass, allArgs: _*)
       }.dependsOn(compile in (`vscode-dotty`, Compile)).evaluated
+    ).
+    settings(
+      ideTestsCompilerVersion := (version in `dotty-compiler`).value,
+      ideTestsCompilerArguments := (scalacOptions in `dotty-compiler`).value,
+      ideTestsSourceDirectories := Seq((baseDirectory in ThisBuild).value / "out" / "ide-tests" / "src"),
+      ideTestsDependencyClasspath := {
+        val dottyLib = (classDirectory in `dotty-library-bootstrapped` in Compile).value
+        val scalaLib =
+          (dependencyClasspath in `dotty-library-bootstrapped` in Compile)
+            .value
+            .map(_.data)
+            .filter(_.getName.matches("scala-library.*\\.jar"))
+            .toList
+        dottyLib :: scalaLib
+      },
+      ideTestsClassDirectory := (baseDirectory in ThisBuild).value / "out" / "ide-tests" / "out",
+      buildInfoKeys in Test := Seq[BuildInfoKey](
+        ideTestsCompilerVersion,
+        ideTestsCompilerArguments,
+        ideTestsSourceDirectories,
+        ideTestsDependencyClasspath,
+        ideTestsClassDirectory
+      ),
+      buildInfoPackage in Test := "dotty.tools.languageserver.util.server",
+      BuildInfoPlugin.buildInfoScopedSettings(Test),
+      BuildInfoPlugin.buildInfoDefaultSettings
     ).disablePlugins(ScriptedPlugin)
 
   lazy val `dotty-bench` = project.in(file("bench")).asDottyBench(NonBootstrapped)

project/plugins.sbt

@@ -14,3 +14,5 @@ addSbtPlugin("com.jsuereth" % "sbt-pgp" % "1.1.0")
 addSbtPlugin("org.xerial.sbt" % "sbt-pack" % "0.10.1")
 
 addSbtPlugin("pl.project13.scala" % "sbt-jmh" % "0.3.2")
+
+addSbtPlugin("com.eed3si9n" % "sbt-buildinfo" % "0.7.0")