scalanative + utest - specs2

[francisdb]

fixes #198

This PR

• removes specs2 in favor of utest
• adds scala native build

[francisdb]

I wonder what is causing this

[info] Tests: 10, Passed: 10, Failed: 0
[trace] Stack trace suppressed: run last parboiledCoreNative/nativetest:nativeLink for the full output.
[error] (parboiledCoreNative/nativetest:nativeLink) java.nio.file.ClosedFileSystemException
[error] Total time: 14 s, completed Feb 28, 2019 9:06:36 AM
> last parboiledCoreNative/nativetest:nativeLink
java.nio.file.ClosedFileSystemException
	at com.sun.nio.zipfs.ZipFileSystem.ensureOpen(ZipFileSystem.java:1084)
	at com.sun.nio.zipfs.ZipFileSystem.newByteChannel(ZipFileSystem.java:633)
	at com.sun.nio.zipfs.ZipPath.newByteChannel(ZipPath.java:739)
	at com.sun.nio.zipfs.ZipFileSystemProvider.newByteChannel(ZipFileSystemProvider.java:255)
	at java.nio.file.Files.newByteChannel(Files.java:361)
	at java.nio.file.Files.newByteChannel(Files.java:407)
	at java.nio.file.Files.readAllBytes(Files.java:3152)
	at scala.scalanative.io.VirtualDirectory$NioDirectory$class.read(VirtualDirectory.scala:72)
	at scala.scalanative.io.VirtualDirectory$JarDirectory.read(VirtualDirectory.scala:97)
	at scala.scalanative.linker.ClassPath$Impl$$anonfun$2$$anonfun$apply$1.apply(ClassPath.scala:41)
	at scala.scalanative.linker.ClassPath$Impl$$anonfun$2$$anonfun$apply$1.apply(ClassPath.scala:41)
	at scala.scalanative.nir.serialization.BinaryDeserializer.scala$scalanative$nir$serialization$BinaryDeserializer$$buffer$lzycompute(BinaryDeserializer.scala:12)
	at scala.scalanative.nir.serialization.BinaryDeserializer.scala$scalanative$nir$serialization$BinaryDeserializer$$buffer(BinaryDeserializer.scala:12)
	at scala.scalanative.nir.serialization.BinaryDeserializer.header$lzycompute(BinaryDeserializer.scala:16)
	at scala.scalanative.nir.serialization.BinaryDeserializer.header(BinaryDeserializer.scala:15)
	at scala.scalanative.nir.serialization.BinaryDeserializer.deserialize(BinaryDeserializer.scala:55)
	at scala.scalanative.linker.ClassPath$Impl$$anonfun$load$1.apply(ClassPath.scala:52)
	at scala.scalanative.linker.ClassPath$Impl$$anonfun$load$1.apply(ClassPath.scala:51)
	at scala.Option.flatMap(Option.scala:170)
	at scala.scalanative.linker.ClassPath$Impl.load(ClassPath.scala:51)
	at scala.scalanative.linker.Linker$Impl$$anonfun$link$1$$anonfun$load$1$1.applyOrElse(Linker.scala:45)
	at scala.scalanative.linker.Linker$Impl$$anonfun$link$1$$anonfun$load$1$1.applyOrElse(Linker.scala:43)
	at scala.runtime.AbstractPartialFunction.apply(AbstractPartialFunction.scala:33)
	at scala.collection.TraversableOnce$$anonfun$collectFirst$1.apply(TraversableOnce.scala:133)
	at scala.collection.TraversableOnce$$anonfun$collectFirst$1.apply(TraversableOnce.scala:131)
	at scala.collection.Iterator$class.foreach(Iterator.scala:727)
	at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
	at scala.collection.TraversableOnce$class.collectFirst(TraversableOnce.scala:131)
	at scala.collection.AbstractTraversable.collectFirst(Traversable.scala:105)
	at scala.scalanative.linker.Linker$Impl$$anonfun$link$1.load$1(Linker.scala:43)
	at scala.scalanative.linker.Linker$Impl$$anonfun$link$1.processDirect$1(Linker.scala:54)
	at scala.scalanative.linker.Linker$Impl$$anonfun$link$1.apply(Linker.scala:135)
	at scala.scalanative.linker.Linker$Impl$$anonfun$link$1.apply(Linker.scala:28)
	at scala.scalanative.util.Scope$.apply(Scope.scala:30)
	at scala.scalanative.linker.Linker$Impl.link(Linker.scala:28)
	at scala.scalanative.build.ScalaNative$$anonfun$link$1.apply(ScalaNative.scala:27)
	at scala.scalanative.build.ScalaNative$$anonfun$link$1.apply(ScalaNative.scala:16)
	at scala.scalanative.build.Logger$class.time(Logger.scala:32)
	at scala.scalanative.build.Logger$$anon$2.time(Logger.scala:66)
	at scala.scalanative.build.ScalaNative$.link(ScalaNative.scala:16)
	at scala.scalanative.build.Build$.build(Build.scala:54)
	at scala.scalanative.sbtplugin.ScalaNativePluginInternal$$anonfun$scalaNativeConfigSettings$5$$anonfun$apply$7.apply(ScalaNativePluginInternal.scala:135)
	at scala.scalanative.sbtplugin.ScalaNativePluginInternal$$anonfun$scalaNativeConfigSettings$5$$anonfun$apply$7.apply(ScalaNativePluginInternal.scala:135)
	at scala.scalanative.sbtplugin.ScalaNativePluginInternal$.scala$scalanative$sbtplugin$ScalaNativePluginInternal$$interceptBuildException(ScalaNativePluginInternal.scala:210)
	at scala.scalanative.sbtplugin.ScalaNativePluginInternal$$anonfun$scalaNativeConfigSettings$5.apply(ScalaNativePluginInternal.scala:135)
	at scala.scalanative.sbtplugin.ScalaNativePluginInternal$$anonfun$scalaNativeConfigSettings$5.apply(ScalaNativePluginInternal.scala:130)
	at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47)
	at sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:40)
	at sbt.std.Transform$$anon$4.work(System.scala:63)
	at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:228)
	at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:228)
	at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:17)
	at sbt.Execute.work(Execute.scala:237)
	at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:228)
	at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:228)
	at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:159)
	at sbt.CompletionService$$anon$2.call(CompletionService.scala:28)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

[francisdb]

Should be ready for merging/squashing, depending on the release process some extra things will need to be added as the native modules are not aggregated by default

[sirthias]

This LGTM!
Thank you, for all your work here, @francisdb!

In addition to the idea regarding the - collision I only have the one additional comment, that in some cases utest's ==> might be a little bit more readable than the assert(...) style, but ultimately it doesn't really matter, which style we use...

[francisdb]

@sirthias anything that remains for this to be merged?

[sirthias]

Sorry, @francisdb, I didn't see that you pushed more stuff.
Looks good now.
Thank you again!

[francisdb]

@sirthias hmm, looks like I should have squashed first :-s

[sirthias]

Ah, yeah.
Well, don't worry about it...