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Diffstat (limited to 'test/files/presentation/simple-tests/src/Tester.scala')
-rw-r--r-- | test/files/presentation/simple-tests/src/Tester.scala | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/test/files/presentation/simple-tests/src/Tester.scala b/test/files/presentation/simple-tests/src/Tester.scala deleted file mode 100644 index 09e08727bf..0000000000 --- a/test/files/presentation/simple-tests/src/Tester.scala +++ /dev/null @@ -1,204 +0,0 @@ -package scala.tools.nsc -package interactive -package tests - -import util._ -import reporters._ -import io.AbstractFile -import collection.mutable.ArrayBuffer - -class Tester(ntests: Int, inputs: Array[SourceFile], settings: Settings) { - - val reporter/*?*/ = new StoreReporter/*!*/ - val compiler/*?*/ = new Global(settings, reporter) - - def askAndListen[T, U](msg: String, arg: T, op: (T, Response[U]) => Unit) { - if (settings.verbose.value) print(msg+" "+arg+": ") - val TIMEOUT = 10 // ms - val limit = System.currentTimeMillis() + randomDelayMillis - val res = new Response[U] - op(arg, res) - while (!res.isComplete && !res.isCancelled) { - if (System.currentTimeMillis() > limit) { - print("c"); res./*!*/cancel() - } else res.get(TIMEOUT) match { - case Some(Left(t)) => - /**/ - if (settings.verbose.value) println(t) - case Some(Right(ex)) => - ex.printStackTrace() - println(ex) - case None => - } - } - } - - def askReload(sfs: SourceFile*) = askAndListen("reload", sfs.toList, compiler.askReload) - def askTypeAt(pos: Position) = askAndListen("type at", pos, compiler.askTypeAt) - def askTypeCompletion(pos: Position) = askAndListen("type at", pos, compiler.askTypeCompletion) - def askScopeCompletion(pos: Position) = askAndListen("type at", pos, compiler.askScopeCompletion) - - val rand = new java.util.Random() - - private def randomInverse(n: Int) = n / (rand.nextInt(n) + 1) - - private def randomDecreasing(n: Int) = { - var r = rand.nextInt((1 to n).sum) - var limit = n - var result = 0 - while (r > limit) { - result += 1 - r -= limit - limit -= 1 - } - result - } - - def randomSourceFileIdx() = rand.nextInt(inputs.length) - - def randomBatchesPerSourceFile(): Int = randomDecreasing(100) - - def randomChangesPerBatch(): Int = randomInverse(50) - - def randomPositionIn(sf: SourceFile) = rand.nextInt(sf.content.length) - - def randomNumChars() = randomInverse(100) - - def randomDelayMillis = randomInverse(10000) - - class Change(sfidx: Int, start: Int, nchars: Int, toLeft: Boolean) { - - private var pos = start - private var deleted: List[Char] = List() - - override def toString = - "In "+inputs(sfidx)+" at "+start+" take "+nchars+" to "+ - (if (toLeft) "left" else "right") - - def deleteOne() { - val sf = inputs(sfidx) - deleted = sf.content(pos) :: deleted - val sf1 = new BatchSourceFile(sf.file, sf.content.take(pos) ++ sf.content.drop(pos + 1)) - inputs(sfidx) = sf1 - askReload(sf1) - } - - def deleteAll() { - print("/"+nchars) - for (i <- 0 until nchars) { - if (toLeft) { - if (pos > 0 && pos <= inputs(sfidx).length) { - pos -= 1 - deleteOne() - } - } else { - if (pos < inputs(sfidx).length) { - deleteOne() - } - } - } - } - - def insertAll() { - for (chr <- if (toLeft) deleted else deleted.reverse) { - val sf = inputs(sfidx) - val (pre, post) = sf./*!*/content splitAt pos - pos += 1 - val sf1 = new BatchSourceFile(sf.file, pre ++ (chr +: post)) - inputs(sfidx) = sf1 - askReload(sf1) - } - } - } - - val testComment = "/**/" - - def testFileChanges(sfidx: Int) = { - lazy val testPositions: Seq[Int] = { - val sf = inputs(sfidx) - val buf = new ArrayBuffer[Int] - var pos = sf.content.indexOfSlice(testComment) - while (pos > 0) { - buf += pos - pos = sf.content.indexOfSlice(testComment, pos + 1) - } - buf - } - def otherTest() { - if (testPositions.nonEmpty) { - val pos = new OffsetPosition(inputs(sfidx), rand.nextInt(testPositions.length)) - rand.nextInt(3) match { - case 0 => askTypeAt(pos) - case 1 => askTypeCompletion(pos) - case 2 => askScopeCompletion(pos) - } - } - } - for (i <- 0 until randomBatchesPerSourceFile()) { - val changes = Vector.fill(/**/randomChangesPerBatch()) { - /**/ - new Change(sfidx, randomPositionIn(inputs(sfidx)), randomNumChars(), rand.nextBoolean()) - } - doTest(sfidx, changes, testPositions, otherTest) match { - case Some(errortrace) => - println(errortrace) - minimize(errortrace) - case None => - } - } - } - - def doTest(sfidx: Int, changes: Seq[Change], testPositions: Seq[Int], otherTest: () => Unit): Option[ErrorTrace] = { - print("new round with "+changes.length+" changes:") - changes foreach (_.deleteAll()) - otherTest() - def errorCount() = compiler.ask(() => reporter.ERROR.count) -// println("\nhalf test round: "+errorCount()) - changes.view.reverse foreach (_.insertAll()) - otherTest() - println("done test round: "+errorCount()) - if (errorCount() != 0) - Some(ErrorTrace(sfidx, changes, reporter.infos, inputs(sfidx).content)) - else - None - } - - case class ErrorTrace( - sfidx: Int, changes: Seq[Change], infos: collection.Set[reporter.Info], content: Array[Char]) { - override def toString = - "Sourcefile: "+inputs(sfidx)+ - "\nChanges:\n "+changes.mkString("\n ")+ - "\nErrors:\n "+infos.mkString("\n ")+ - "\nContents:\n"+content.mkString - } - - def minimize(etrace: ErrorTrace) {} - - /**/ - def run() { - askReload(inputs: _*) - for (i <- 0 until ntests) - testFileChanges(randomSourceFileIdx()) - } -} - -/* A program to do presentation compiler stress tests. - * Usage: - * - * scala scala.tools.nsc.interactive.test.Tester <n> <files> - * - * where <n> is the number os tests to be run and <files> is the set of files to test. - * This will do random deletions and re-insertions in any of the files. - * At places where an empty comment /**/ appears it will in addition randomly - * do ask-types, type-completions, or scope-completions. - */ -object Tester { - def main(args: Array[String]) { - val settings = new Settings() - val (_, filenames) = settings.processArguments(args.toList.tail, true) - println("filenames = "+filenames) - val files = filenames.toArray map (str => new BatchSourceFile(AbstractFile.getFile(str)): SourceFile) - new Tester(args(0).toInt, files, settings).run() - sys.exit(0) - } -} |