Use Scala 2 library TASTy in compilation tests

Author: nicolasstucki

compiler/test/dotty/Properties.scala

@@ -82,6 +82,9 @@ object Properties {
   /** scala-library jar */
   def scalaLibrary: String = sys.props("dotty.tests.classes.scalaLibrary")
 
+  /** scala-library TASTy jar */
+  def scalaLibraryTasty: String = sys.props("dotty.tests.tasties.scalaLibrary")
+
   /** scala-asm jar */
   def scalaAsm: String = sys.props("dotty.tests.classes.scalaAsm")
 

compiler/test/dotty/tools/vulpix/TestConfiguration.scala

@@ -26,11 +26,13 @@ object TestConfiguration {
   )
 
   val basicClasspath = mkClasspath(List(
+    Properties.scalaLibraryTasty,
     Properties.scalaLibrary,
     Properties.dottyLibrary
   ))
 
   val withCompilerClasspath = mkClasspath(List(
+    Properties.scalaLibraryTasty,
     Properties.scalaLibrary,
     Properties.scalaAsm,
     Properties.jlineTerminal,

project/Build.scala

@@ -641,6 +641,7 @@ object Build {
           "-Ddotty.tests.classes.tastyCore=" + jars("tasty-core"),
           "-Ddotty.tests.classes.compilerInterface=" + findArtifactPath(externalDeps, "compiler-interface"),
           "-Ddotty.tests.classes.scalaLibrary=" + findArtifactPath(externalDeps, "scala-library"),
+          "-Ddotty.tests.tasties.scalaLibrary=" + jars("stdlib-bootstrapped-tasty"),
           "-Ddotty.tests.classes.scalaAsm=" + findArtifactPath(externalDeps, "scala-asm"),
           "-Ddotty.tests.classes.jlineTerminal=" + findArtifactPath(externalDeps, "jline-terminal"),
           "-Ddotty.tests.classes.jlineReader=" + findArtifactPath(externalDeps, "jline-reader"),
@@ -820,7 +821,8 @@ object Build {
           // running the compiler, we should always have the bootstrapped
           // library on the compiler classpath since the non-bootstrapped one
           // may not be binary-compatible.
-          "scala3-library"       -> (`scala3-library-bootstrapped` / Compile / packageBin).value
+          "scala3-library"       -> (`scala3-library-bootstrapped` / Compile / packageBin).value,
+          "stdlib-bootstrapped-tasty" -> (`stdlib-bootstrapped-tasty` / Compile / packageBin).value,
         ).mapValues(_.getAbsolutePath)
       }
     }.value,
@@ -848,6 +850,7 @@ object Build {
         "scala3-staging"  -> (LocalProject("scala3-staging") / Compile / packageBin).value.getAbsolutePath,
         "scala3-tasty-inspector"  -> (LocalProject("scala3-tasty-inspector") / Compile / packageBin).value.getAbsolutePath,
         "tasty-core"     -> (LocalProject("tasty-core-bootstrapped") / Compile / packageBin).value.getAbsolutePath,
+        "stdlib-bootstrapped-tasty" -> (LocalProject("stdlib-bootstrapped-tasty") / Compile / packageBin).value.getAbsolutePath,
       )
     },
 

stdlib-bootstrapped-tasty-tests/src/Main.scala

@@ -19,6 +19,8 @@ object HelloWorld:
     testScalaNumberUnderlying()
     testArrayOps()
     scala.collection.mutable.UnrolledBufferTest.test()
+
+    assert(scala.StdlibBootstrappedDummy.thisMethodMustNotBePublished == "This method must not be published in a stable release of the library.")
   }
 
   def testScala2UnapplySignatures() = {

stdlib-bootstrapped/src/scala/StdlibBootstrappedDummy/StdlibBootstrappedDummy.scala

@@ -0,0 +1,7 @@
+package scala.StdlibBootstrappedDummy
+
+// This method must not be published in a stable release of the library.
+// This method can be removed once we add other methods to the stdlib bootstrapped
+// and are able to test it using those methods.
+inline def thisMethodMustNotBePublished: String =
+  "This method must not be published in a stable release of the library."

tests/run/testStdlibTasty.scala

@@ -0,0 +1,2 @@
+@main def Test: Unit =
+  assert(scala.StdlibBootstrappedDummy.thisMethodMustNotBePublished == "This method must not be published in a stable release of the library.")