Fix #5129: Use system-dependent path separator

compiler/test/dotty/tools/dotc/FromTastyTests.scala

@@ -5,6 +5,8 @@ package dotc
 import org.junit.{AfterClass, Test}
 import vulpix._
 
+import java.io.{File => JFile}
+
 import scala.concurrent.duration._
 
 class FromTastyTests extends ParallelTesting {
@@ -26,7 +28,7 @@ class FromTastyTests extends ParallelTesting {
     // > dotc -Ythrough-tasty -Ycheck:all <source>
 
     implicit val testGroup: TestGroup = TestGroup("posTestFromTasty")
-    compileTastyInDir("tests/pos", defaultOptions,
+    compileTastyInDir(s"tests${JFile.separator}pos", defaultOptions,
       fromTastyFilter = FileFilter.exclude(TestSources.posFromTastyBlacklisted),
       decompilationFilter = FileFilter.exclude(TestSources.posDecompilationBlacklisted),
       recompilationFilter = FileFilter.include(TestSources.posRecompilationWhitelist)
@@ -40,7 +42,7 @@ class FromTastyTests extends ParallelTesting {
     // > dotr Test
 
     implicit val testGroup: TestGroup = TestGroup("runTestFromTasty")
-    compileTastyInDir("tests/run", defaultOptions,
+    compileTastyInDir(s"tests${JFile.separator}run", defaultOptions,
       fromTastyFilter = FileFilter.exclude(TestSources.runFromTastyBlacklisted),
       decompilationFilter = FileFilter.exclude(TestSources.runDecompilationBlacklisted),
       recompilationFilter = FileFilter.include(TestSources.runRecompilationWhitelist)

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

@@ -54,7 +54,7 @@ trait ParallelTesting extends RunnerOrchestration { self =>
     def outDir: JFile
     def flags: TestFlags
 
-    def runClassPath: String = outDir.getAbsolutePath + ":" + flags.runClassPath
+    def runClassPath: String = outDir.getAbsolutePath + JFile.pathSeparator + flags.runClassPath
 
     def title: String = self match {
       case self: JointCompilationSource =>
@@ -337,7 +337,7 @@ trait ParallelTesting extends RunnerOrchestration { self =>
           "javac",
           "-encoding", "UTF-8",
           "-classpath",
-          s"${Properties.scalaLibrary}:${targetDir.getAbsolutePath}"
+          s"${Properties.scalaLibrary}${JFile.pathSeparator}${targetDir.getAbsolutePath}"
         ) ++ flags.all.takeRight(2) ++ fs
 
         val process = Runtime.getRuntime.exec(fullArgs)
@@ -396,7 +396,7 @@ trait ParallelTesting extends RunnerOrchestration { self =>
       val flags = flags0 and ("-d", tastyOutput.getAbsolutePath) and "-from-tasty"
 
       def tastyFileToClassName(f: JFile): String = {
-        val pathStr = targetDir.toPath.relativize(f.toPath).toString.replace('/', '.')
+        val pathStr = targetDir.toPath.relativize(f.toPath).toString.replace(JFile.separatorChar, '.')
         pathStr.stripSuffix(".tasty").stripSuffix(".hasTasty")
       }
       val classes = flattenFiles(targetDir).filter(isTastyFile).map(tastyFileToClassName)
@@ -420,14 +420,15 @@ trait ParallelTesting extends RunnerOrchestration { self =>
 
     protected def decompile(flags0: TestFlags, suppressErrors: Boolean, targetDir0: JFile): TestReporter = {
       val targetDir = new JFile(targetDir0.getParent + "_decompiled")
-      val decompilationOutput = new JFile(targetDir + "/" + targetDir0.getName)
+      val decompilationOutput = new JFile(targetDir + JFile.separator + targetDir0.getName)
       decompilationOutput.mkdirs()
       val flags =
         flags0 and ("-d", decompilationOutput.getAbsolutePath) and
         "-decompile" and "-pagewidth" and "80"
 
       def hasTastyFileToClassName(f: JFile): String =
-        targetDir0.toPath.relativize(f.toPath).toString.stripSuffix(".hasTasty").stripSuffix(".tasty").replace('/', '.')
+        targetDir0.toPath.relativize(f.toPath).toString.stripSuffix(".hasTasty").
+          stripSuffix(".tasty").replace(JFile.separatorChar, '.')
       val classes = flattenFiles(targetDir0).filter(isTastyFile).map(hasTastyFileToClassName).sorted
 
       val reporter =
@@ -531,17 +532,19 @@ trait ParallelTesting extends RunnerOrchestration { self =>
                 }.headOption
                 checkFileOpt match {
                   case Some(checkFile) =>
+                    val ignoredFilePathLine = "/** Decompiled from"
                     val stripTrailingWhitespaces = "(.*\\S|)\\s+".r
-                    val output = Source.fromFile(outDir.getParent + "_decompiled/" + outDir.getName + "/decompiled.scala").getLines().map {line =>
+                    val output = Source.fromFile(outDir.getParent + "_decompiled" + JFile.separator + outDir.getName
+                      + JFile.separator + "decompiled.scala").getLines().map {line =>
                       stripTrailingWhitespaces.unapplySeq(line).map(_.head).getOrElse(line)
-                    }.mkString("\n")
-
-                    val check: String = Source.fromFile(checkFile).getLines().mkString("\n")
+                    }
 
+                    val check: String = Source.fromFile(checkFile).getLines().filter(!_.startsWith(ignoredFilePathLine))
+                      .mkString("\n")
 
-                    if (output != check) {
+                    if (output.filter(!_.startsWith(ignoredFilePathLine)).mkString("\n") != check) {
                       val outFile = dotty.tools.io.File(checkFile.toPath).addExtension(".out")
-                      outFile.writeAll(output)
+                      outFile.writeAll(output.mkString("\n"))
                       val msg =
                         s"""Output differed for test $name, use the following command to see the diff:
                            |  > diff $checkFile $outFile
@@ -678,7 +681,7 @@ trait ParallelTesting extends RunnerOrchestration { self =>
             (reporter.compilerCrashed, reporter.errorCount, reporter.warningCount, () => verifyOutput(checkFile, outDir, testSource, reporter.warningCount))
 
           case testSource @ SeparateCompilationSource(_, dir, flags, outDir) =>
-            val checkFile = new JFile(dir.getAbsolutePath.reverse.dropWhile(_ == '/').reverse + ".check")
+            val checkFile = new JFile(dir.getAbsolutePath.reverse.dropWhile(_ == JFile.separatorChar).reverse + ".check")
             val reporters = testSource.compilationGroups.map(compile(_, flags, false, outDir))
             val compilerCrashed = reporters.exists(_.compilerCrashed)
             val (errorCount, warningCount) =
@@ -1120,15 +1123,15 @@ trait ParallelTesting extends RunnerOrchestration { self =>
   /** Create out directory for `file` */
   private def createOutputDirsForFile(file: JFile, sourceDir: JFile, outDir: String): JFile = {
     val uniqueSubdir = file.getName.substring(0, file.getName.lastIndexOf('.'))
-    val targetDir = new JFile(outDir + s"${sourceDir.getName}/$uniqueSubdir")
+    val targetDir = new JFile(outDir + s"${sourceDir.getName}${JFile.separatorChar}$uniqueSubdir")
     targetDir.mkdirs()
     targetDir
   }
 
   /** Make sure that directory string is as expected */
   private def checkRequirements(f: String, sourceDir: JFile, outDir: String): Unit = {
     require(sourceDir.isDirectory && sourceDir.exists, "passed non-directory to `compileFilesInDir`")
-    require(outDir.last == '/', "please specify an `outDir` with a trailing slash")
+    require(outDir.last == JFile.separatorChar, "please specify an `outDir` with a trailing file separator")
   }
 
   /** Separates directories from files and returns them as `(dirs, files)` */
@@ -1145,8 +1148,8 @@ trait ParallelTesting extends RunnerOrchestration { self =>
     val sourceFile = new JFile(f)
     val parent = sourceFile.getParentFile
     val outDir =
-      defaultOutputDir + testGroup + "/" +
-      sourceFile.getName.substring(0, sourceFile.getName.lastIndexOf('.')) + "/"
+      defaultOutputDir + testGroup + JFile.separator +
+      sourceFile.getName.substring(0, sourceFile.getName.lastIndexOf('.')) + JFile.separator
 
     require(
       sourceFile.exists && !sourceFile.isDirectory &&
@@ -1171,7 +1174,7 @@ trait ParallelTesting extends RunnerOrchestration { self =>
    *  can be used for randomization.
    */
   def compileDir(f: String, flags: TestFlags, randomOrder: Option[Int] = None, recursive: Boolean = true)(implicit testGroup: TestGroup): CompilationTest = {
-    val outDir = defaultOutputDir + testGroup + "/"
+    val outDir = defaultOutputDir + testGroup + JFile.separator
     val sourceDir = new JFile(f)
     checkRequirements(f, sourceDir, outDir)
 
@@ -1190,7 +1193,7 @@ trait ParallelTesting extends RunnerOrchestration { self =>
     }
 
     // Directories in which to compile all containing files with `flags`:
-    val targetDir = new JFile(outDir + "/" + sourceDir.getName + "/")
+    val targetDir = new JFile(outDir + JFile.separator + sourceDir.getName + JFile.separator)
     targetDir.mkdirs()
 
     val target = JointCompilationSource(s"compiling '$f' in test '$testGroup'", randomized, flags, targetDir)
@@ -1202,7 +1205,7 @@ trait ParallelTesting extends RunnerOrchestration { self =>
    *  dissociated
    */
   def compileList(testName: String, files: List[String], flags: TestFlags)(implicit testGroup: TestGroup): CompilationTest = {
-    val outDir = defaultOutputDir + testGroup + "/" + testName + "/"
+    val outDir = defaultOutputDir + testGroup + JFile.separator + testName + JFile.separator
 
     // Directories in which to compile all containing files with `flags`:
     val targetDir = new JFile(outDir)
@@ -1233,7 +1236,7 @@ trait ParallelTesting extends RunnerOrchestration { self =>
    *    the same name as the directory (with the file extension `.check`)
    */
   def compileFilesInDir(f: String, flags: TestFlags, fileFilter: FileFilter = FileFilter.NoFilter)(implicit testGroup: TestGroup): CompilationTest = {
-    val outDir = defaultOutputDir + testGroup + "/"
+    val outDir = defaultOutputDir + testGroup + JFile.separator
     val sourceDir = new JFile(f)
     checkRequirements(f, sourceDir, outDir)
 
@@ -1269,7 +1272,7 @@ trait ParallelTesting extends RunnerOrchestration { self =>
    */
   def compileTastyInDir(f: String, flags0: TestFlags, fromTastyFilter: FileFilter, decompilationFilter: FileFilter, recompilationFilter: FileFilter)(
       implicit testGroup: TestGroup): TastyCompilationTest = {
-    val outDir = defaultOutputDir + testGroup + "/"
+    val outDir = defaultOutputDir + testGroup + JFile.separator
     val flags = flags0 and "-Yretain-trees"
     val sourceDir = new JFile(f)
     checkRequirements(f, sourceDir, outDir)
@@ -1291,15 +1294,15 @@ trait ParallelTesting extends RunnerOrchestration { self =>
     ) extends JointCompilationSource(name, Array(file), flags, outDir, fromTasty, decompilation) {
 
       override def buildInstructions(errors: Int, warnings: Int): String = {
-        val runOrPos = if (file.getPath.startsWith("tests/run/")) "run" else "pos"
+        val runOrPos = if (file.getPath.startsWith(s"tests${JFile.separator}run${JFile.separator}")) "run" else "pos"
         val listName = if (fromTasty) "from-tasty" else "decompilation"
         s"""|
             |Test '$title' compiled with $errors error(s) and $warnings warning(s),
             |the test can be reproduced by running:
             |
             |  sbt "testFromTasty $file"
             |
-            |This tests can be disabled by adding `${file.getName}` to `compiler/test/dotc/$runOrPos-$listName.blacklist`
+            |This tests can be disabled by adding `${file.getName}` to `compiler${JFile.separator}test${JFile.separator}dotc${JFile.separator}$runOrPos-$listName.blacklist`
             |
             |""".stripMargin
       }
@@ -1378,7 +1381,7 @@ trait ParallelTesting extends RunnerOrchestration { self =>
    *  tests.
    */
   def compileShallowFilesInDir(f: String, flags: TestFlags)(implicit testGroup: TestGroup): CompilationTest = {
-    val outDir = defaultOutputDir + testGroup + "/"
+    val outDir = defaultOutputDir + testGroup + JFile.separator
     val sourceDir = new JFile(f)
     checkRequirements(f, sourceDir, outDir)
 
@@ -1395,7 +1398,7 @@ trait ParallelTesting extends RunnerOrchestration { self =>
 
 object ParallelTesting {
 
-  def defaultOutputDir: String = "out/"
+  def defaultOutputDir: String = "out"+JFile.separator
 
   def isSourceFile(f: JFile): Boolean = {
     val name = f.getName

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

@@ -156,9 +156,9 @@ trait RunnerOrchestration {
      *  scala library.
      */
     private def createProcess: Process = {
-      val sep = sys.props("file.separator")
+      val sep = JFile.separator
       val cp =
-        classOf[ChildJVMMain].getProtectionDomain.getCodeSource.getLocation.getFile + ":" +
+        classOf[ChildJVMMain].getProtectionDomain.getCodeSource.getLocation.getFile + JFile.pathSeparator +
         Properties.scalaLibrary
       val javaBin = sys.props("java.home") + sep + "bin" + sep + "java"
       new ProcessBuilder(javaBin, "-Xmx1g", "-cp", cp, "dotty.tools.vulpix.ChildJVMMain")

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

@@ -1,5 +1,7 @@
 package dotty.tools.vulpix
 
+import java.io.{File => JFile}
+
 final case class TestFlags(
   defaultClassPath: String,
   runClassPath: String, // class path that is used when running `run` tests (not compiling)
@@ -12,10 +14,10 @@ final case class TestFlags(
     TestFlags(defaultClassPath, runClassPath, options diff flags)
 
   def withClasspath(classPath: String): TestFlags =
-    TestFlags(s"$defaultClassPath:$classPath", runClassPath, options)
+    TestFlags(s"$defaultClassPath${JFile.pathSeparator}$classPath", runClassPath, options)
 
   def withRunClasspath(classPath: String): TestFlags =
-    TestFlags(defaultClassPath, s"$runClassPath:$classPath", options)
+    TestFlags(defaultClassPath, s"$runClassPath${JFile.pathSeparator}$classPath", options)
 
   def all: Array[String] = Array("-classpath", defaultClassPath) ++ options
 }

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

@@ -1,6 +1,7 @@
 package dotty.tools
 package vulpix
 
+import java.io.{File => JFile}
 import org.junit.Assert._
 import org.junit.Test
 
@@ -86,12 +87,13 @@ class VulpixUnitTests extends ParallelTesting {
     }
 
   @Test def runTimeout: Unit = {
+    val fileName = s"tests${JFile.separatorChar}vulpix-tests${JFile.separatorChar}unit${JFile.separatorChar}timeout.scala"
     try {
-      compileFile("tests/vulpix-tests/unit/timeout.scala", defaultOptions).checkRuns()
+      compileFile(fileName, defaultOptions).checkRuns()
       fail()
     } catch {
       case ae: AssertionError =>
-        assertEquals("Run test failed, but should not, reasons:\n\n  - encountered 1 test failures(s)  - test 'tests/vulpix-tests/unit/timeout.scala' timed out",
+        assertEquals(s"Run test failed, but should not, reasons:\n\n  - encountered 1 test failures(s)  - test '${fileName}' timed out",
           ae.getMessage)
     }
   }

doc-tool/test/dotty/tools/dottydoc/staticsite/SiteTests.scala

@@ -78,8 +78,8 @@ class SiteTests extends DottyDocTest with SourceFileOps with CheckFromSource {
   }
 
   @Test def siteStructure = {
-    val assets = site.staticAssets.map(site.stripRoot(_)).toSet
-    val compd  = site.compilableFiles.map(site.stripRoot(_)).toSet
+    val assets = site.staticAssets.map(site.stripRoot(_).replace('\\','/')).toSet
+    val compd  = site.compilableFiles.map(site.stripRoot(_).replace('\\','/')).toSet
 
     val expectedAssets = Set(
       "css/toolbar.css",

tests/idempotency/IdempotencyCheck.scala

@@ -1,4 +1,5 @@
 
+import java.io.{File => JFile}
 import java.nio.file.{ Files => JFiles, Path => JPath, Paths => JPaths }
 import java.util.stream.{ Stream => JStream }
 
@@ -7,15 +8,19 @@ import scala.collection.JavaConverters._
 object IdempotencyCheck {
   val blacklisted = Set(
     // No fix needed. Bridges on collections in different order. Second one in scala2 order.
-    "pos/Map/scala/collection/immutable/Map",
-    "pos/Map/scala/collection/immutable/AbstractMap",
-    "pos/t1203a/NodeSeq",
-    "pos/i2345/Whatever"
+    s"pos{JFile.separator}Map{JFile.separator}scala{JFile.separator}collection{JFile.separator}immutable/Map",
+    s"pos{JFile.separator}Map{JFile.separator}scala{JFile.separator}collection{JFile.separator}immutable{JFile.separator}AbstractMap",
+    s"pos{JFile.separator}t1203a/NodeSeq",
+    s"pos{JFile.separator}i2345{JFile.separator}Whatever"
   )
 
   def checkIdempotency(dir1: String, dir2: String): Unit = {
     var failed = 0
     var total = 0
+    val dir1Path = JPaths.get(dir1)
+    val dir2Path = JPaths.get(dir2)
+    val dir1String = dir1Path.toString
+    val dir2String= dir2Path.toString
 
     val groupedBytecodeFiles: List[(JPath, JPath, JPath, JPath)] = {
       val bytecodeFiles = {
@@ -24,21 +29,19 @@ object IdempotencyCheck {
           def tupleWithName(f: JPath) = (f.toString.substring(dir.length + 1, f.toString.length - 6), f)
           paths.iterator.asScala.filter(path => isBytecode(path.toString)).map(tupleWithName).toList
         }
-        val compilerDir1 = JPaths.get(dir1)
-        val compilerDir2 = JPaths.get(dir2)
-        bytecodeFiles(JFiles.walk(compilerDir1), dir1) ++ bytecodeFiles(JFiles.walk(compilerDir2), dir2)
+        bytecodeFiles(JFiles.walk(dir1Path), dir1String) ++ bytecodeFiles(JFiles.walk(dir2Path), dir2String)
       }
       val groups = bytecodeFiles.groupBy(_._1).mapValues(_.map(_._2))
 
-      groups.filterNot(x => blacklisted(x._1)).valuesIterator.flatMap { g =>
+      groups.filterNot(x => blacklisted(x._1)).iterator.flatMap { g =>
         def pred(f: JPath, dir: String, isTasty: Boolean) =
           f.toString.contains(dir) && f.toString.endsWith(if (isTasty) ".tasty" else ".class")
-        val class1 = g.find(f => pred(f, dir1, isTasty = false))
-        val class2 = g.find(f => pred(f, dir2, isTasty = false))
-        val tasty1 = g.find(f => pred(f, dir1, isTasty = true))
-        val tasty2 = g.find(f => pred(f, dir2, isTasty = true))
-        assert(class1.isDefined, s"Could not find class in ${dir1} for $class2")
-        assert(class2.isDefined, s"Could not find class in ${dir2} for $class1")
+        val class1 = g._2.find(f => pred(f, dir1String, isTasty = false))
+        val class2 = g._2.find(f => pred(f, dir2String, isTasty = false))
+        val tasty1 = g._2.find(f => pred(f, dir1String, isTasty = true))
+        val tasty2 = g._2.find(f => pred(f, dir2String, isTasty = true))
+        assert(class1.isDefined, s"Could not find class in ${dir1} for ${g._1}")
+        assert(class2.isDefined, s"Could not find class in ${dir2} for ${g._1}")
         if (tasty1.isEmpty || tasty2.isEmpty) Nil
         else List(Tuple4(class1.get, tasty1.get, class2.get, tasty2.get))
       }.toList