diff options
Diffstat (limited to 'test/files/presentation/simple-tests')
-rw-r--r-- | test/files/presentation/simple-tests/SimpleInteractiveTest.scala | 9 | ||||
-rw-r--r-- | test/files/presentation/simple-tests/src/Tester.scala | 204 |
2 files changed, 213 insertions, 0 deletions
diff --git a/test/files/presentation/simple-tests/SimpleInteractiveTest.scala b/test/files/presentation/simple-tests/SimpleInteractiveTest.scala new file mode 100644 index 0000000000..0456f9f5e7 --- /dev/null +++ b/test/files/presentation/simple-tests/SimpleInteractiveTest.scala @@ -0,0 +1,9 @@ +import scala.tools.nsc.interactive.tests._ + +/** Simple test that shows how to use the InteractiveTest class. It uses the + * inherited runTest method that runs completion and typedAt tests on all + * sources found under src/ + */ +object Test extends InteractiveTest { + override val runRandomTests = false +} diff --git a/test/files/presentation/simple-tests/src/Tester.scala b/test/files/presentation/simple-tests/src/Tester.scala new file mode 100644 index 0000000000..09e08727bf --- /dev/null +++ b/test/files/presentation/simple-tests/src/Tester.scala @@ -0,0 +1,204 @@ +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) + } +} |