Convert test to a JUnit

Author: retronym

test/junit/scala/tools/nsc/PackageSmoosherTest.scala

@@ -1,9 +1,12 @@
 package scala.tools.nsc
 
+import org.junit.Test
+
 import java.nio.file.Files
 
-object PackageSmoosherTest {
-  def main(args: Array[String]): Unit = {
+class PackageSmoosherTest {
+  @Test
+  def test(): Unit = {
     val g = new Global(new Settings)
     g.settings.usejavacp.value = true
     import g._