Add scala2-compat test

Author: griggt

sbt-dotty/sbt-test/scala2-compat/longnames/build.sbt

@@ -0,0 +1,9 @@
+val scala3Version = sys.props("plugin.scalaVersion")
+val scala2Version = "2.13.4"
+
+lazy val lib = (project in file ("lib"))
+  .settings(scalaVersion := scala2Version)
+
+lazy val test = (project in file ("main"))
+  .dependsOn(lib)
+  .settings(scalaVersion := scala3Version)

sbt-dotty/sbt-test/scala2-compat/longnames/lib/lib.scala

@@ -0,0 +1,35 @@
+class reallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongname {
+  object obj0
+  object obj01
+  object obj012
+  object obj0123
+  object obj01234
+  object obj012345
+  object obj0123456
+  object obj01234567
+  object obj012345678
+  object obj0123456789
+  object obj01234567890
+  class cls0
+  class cls01
+  class cls012
+  class cls0123
+  class cls01234
+  class cls012345
+  class cls0123456
+  class cls01234567
+  class cls012345678
+  class cls0123456789
+  class cls01234567890
+  trait trt0
+  trait trt01
+  trait trt012
+  trait trt0123
+  trait trt01234
+  trait trt012345
+  trait trt0123456
+  trait trt01234567
+  trait trt012345678
+  trait trt0123456789
+  trait trt01234567890
+}

sbt-dotty/sbt-test/scala2-compat/longnames/main/test.scala

@@ -0,0 +1,41 @@
+object Test extends App {
+  val c = new reallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongnamereallylongname
+
+  import c._
+
+  val o0 = obj0
+  val o1 = obj01
+  val o2 = obj012
+  val o3 = obj0123
+  val o4 = obj01234
+  val o5 = obj012345
+  val o6 = obj0123456
+  val o7 = obj01234567
+  val o8 = obj012345678
+  val o9 = obj0123456789
+  val o10 = obj01234567890
+
+  val c0 = new cls0
+  val c1 = new cls01
+  val c2 = new cls012
+  val c3 = new cls0123
+  val c4 = new cls01234
+  val c5 = new cls012345
+  val c6 = new cls0123456
+  val c7 = new cls01234567
+  val c8 = new cls012345678
+  val c9 = new cls0123456789
+  val c10 = new cls01234567890
+
+  val t0 = new trt0 {}
+  val t1 = new trt01 {}
+  val t2 = new trt012 {}
+  val t3 = new trt0123 {}
+  val t4 = new trt01234 {}
+  val t5 = new trt012345 {}
+  val t6 = new trt0123456 {}
+  val t7 = new trt01234567 {}
+  val t8 = new trt012345678 {}
+  val t9 = new trt0123456789 {}
+  val t10 = new trt01234567890 {}
+}

sbt-dotty/sbt-test/scala2-compat/longnames/project/plugins.sbt

@@ -0,0 +1 @@
+addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % sys.props("plugin.version"))

sbt-dotty/sbt-test/scala2-compat/longnames/test

@@ -0,0 +1 @@
+> test/run