Add scripted source-dependencies tests imported from sbt 0.13

With the following changes:
- all tests: extend dotty.runtime.LegacyApp instead of App
- inherited-dependencies: do not use structural types
- implicit-search: imports with same name as implicits do not
  shadow implicits in dotty (this is an intentional change)
- constants: this test is no longer pending, it works in dotty
  because we run the ExtractDependencies phase before PostTyper

And the following tests removed:
- *macro* # No macro support in dotty currently
- continuations # no continuation plugin in dotty
- cross-source # tests that the bridge works for scala 2.9 and 2.10
- struct* # no structural types in dotty
- sealed # dotty does not have exhaustiveness checks yet
- inherited-dependencies # only makes sense if name hashing is disabled
  # which is not supported by the dotty sbt phase

Until sbt/sbt#2601 gets fixed, we have to copy
`DottyInjectedPlugin.scala` into every test to run it with dotty-bridge.

Author: smarter

bridge/LICENSE

@@ -1,4 +1,9 @@
-Copyright (c) 2015 The dotty-bridge contributors.
+Copyright (c) 2015-2016 The dotty-bridge contributors.
+All rights reserved.
+
+Some parts of this project are copied or adapted from sbt which is:
+Copyright (c) 2008-2016 Typesafe Inc, Mark Harrah, Grzegorz Kossakowski,
+Josh Suereth, Indrajit Raychaudhuri, Eugene Yokota, and other contributors.
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without

bridge/build.sbt

@@ -21,3 +21,32 @@ lazy val root = (project in file(".")).
     fork in Test := true,
     parallelExecution in Test := false
   )
+
+// Options for scripted tests
+ScriptedPlugin.scriptedSettings
+scriptedLaunchOpts := Seq("-Xmx1024m")
+scriptedBufferLog := false
+// TODO: Use this instead of manually copying DottyInjectedPlugin.scala
+// everywhere once https://github.com/sbt/sbt/issues/2601 gets fixed.
+/*
+scriptedPrescripted := { f =>
+  IO.write(inj, """
+import sbt._
+import Keys._
+
+object DottyInjectedPlugin extends AutoPlugin {
+  override def requires = plugins.JvmPlugin
+  override def trigger = allRequirements
+
+  override val projectSettings = Seq(
+    scalaVersion := "0.1-SNAPSHOT",
+    scalacOptions += "-language:Scala2",
+    scalaBinaryVersion  := "2.11",
+    autoScalaLibrary := false,
+    libraryDependencies ++= Seq("org.scala-lang" % "scala-library" % "2.11.5"),
+    scalaCompilerBridgeSource := ("ch.epfl.lamp" % "dotty-bridge" % "0.1-SNAPSHOT" % "component").sources()
+  )
+}
+""")
+}
+*/

bridge/project/scripted.sbt

@@ -0,0 +1,3 @@
+libraryDependencies <+= (sbtVersion) { sv =>
+  "org.scala-sbt" % "scripted-plugin" % sv
+}

bridge/src/sbt-test/source-dependencies/abstract-override/A.scala

@@ -0,0 +1,3 @@
+trait A {
+	def x: Int
+}

bridge/src/sbt-test/source-dependencies/abstract-override/B.scala

@@ -0,0 +1,3 @@
+trait B extends A {
+	override def x = 2
+}

bridge/src/sbt-test/source-dependencies/abstract-override/C.scala

@@ -0,0 +1,3 @@
+trait C extends A {
+	def x = 5
+}

bridge/src/sbt-test/source-dependencies/abstract-override/D.scala

@@ -0,0 +1 @@
+trait D extends C with B

bridge/src/sbt-test/source-dependencies/abstract-override/changes/C2.scala

@@ -0,0 +1,3 @@
+trait C extends A {
+	abstract override def x = super.x + 5
+}

bridge/src/sbt-test/source-dependencies/abstract-override/project/DottyInjectedPlugin.scala

@@ -0,0 +1,16 @@
+import sbt._
+import Keys._
+
+object DottyInjectedPlugin extends AutoPlugin {
+  override def requires = plugins.JvmPlugin
+  override def trigger = allRequirements
+
+  override val projectSettings = Seq(
+    scalaVersion := "0.1-SNAPSHOT",
+    scalacOptions += "-language:Scala2",
+    scalaBinaryVersion  := "2.11",
+    autoScalaLibrary := false,
+    libraryDependencies ++= Seq("org.scala-lang" % "scala-library" % "2.11.5"),
+    scalaCompilerBridgeSource := ("ch.epfl.lamp" % "dotty-bridge" % "0.1-SNAPSHOT" % "component").sources()
+  )
+}

bridge/src/sbt-test/source-dependencies/abstract-override/test

@@ -0,0 +1,3 @@
+> compile
+$ copy-file changes/C2.scala C.scala
+-> compile

bridge/src/sbt-test/source-dependencies/abstract-type-override/build.sbt

@@ -0,0 +1,7 @@
+InputKey[Unit]("check-number-of-compiler-iterations") <<= inputTask { (argTask: TaskKey[Seq[String]]) =>
+  (argTask, compile in Compile) map { (args: Seq[String], a: sbt.inc.Analysis) =>
+    assert(args.size == 1)
+    val expectedIterationsNumber = args(0).toInt
+    assert(a.compilations.allCompilations.size == expectedIterationsNumber, "a.compilations.allCompilations.size = %d (expected %d)".format(a.compilations.allCompilations.size, expectedIterationsNumber))
+  }
+}

bridge/src/sbt-test/source-dependencies/abstract-type-override/changes/Bar1.scala

@@ -0,0 +1,4 @@
+object Bar {
+  def bar: Outer.TypeInner = null
+  // comment to trigger recompilation
+}

bridge/src/sbt-test/source-dependencies/abstract-type-override/project/DottyInjectedPlugin.scala

@@ -0,0 +1,16 @@
+import sbt._
+import Keys._
+
+object DottyInjectedPlugin extends AutoPlugin {
+  override def requires = plugins.JvmPlugin
+  override def trigger = allRequirements
+
+  override val projectSettings = Seq(
+    scalaVersion := "0.1-SNAPSHOT",
+    scalacOptions += "-language:Scala2",
+    scalaBinaryVersion  := "2.11",
+    autoScalaLibrary := false,
+    libraryDependencies ++= Seq("org.scala-lang" % "scala-library" % "2.11.5"),
+    scalaCompilerBridgeSource := ("ch.epfl.lamp" % "dotty-bridge" % "0.1-SNAPSHOT" % "component").sources()
+  )
+}

bridge/src/sbt-test/source-dependencies/abstract-type-override/src/main/scala/Bar.scala

@@ -0,0 +1,3 @@
+object Bar {
+  def bar: Outer.TypeInner = null
+}

bridge/src/sbt-test/source-dependencies/abstract-type-override/src/main/scala/Foo.scala

@@ -0,0 +1,5 @@
+object Outer {
+  class Inner { type Xyz }
+
+  type TypeInner = Inner { type Xyz = Int }
+}

bridge/src/sbt-test/source-dependencies/abstract-type-override/src/main/scala/Impl.scala

@@ -0,0 +1,3 @@
+class Impl {
+  def bleep = Bar.bar
+}

bridge/src/sbt-test/source-dependencies/abstract-type-override/test

@@ -0,0 +1,14 @@
+# Test for separate compilation and proper value of
+# the OVERRIDE flag when abstract types, type alias
+# and structural type are involved
+# See https://github.com/sbt/sbt/issues/726 for details
+
+# introduces first compile iteration
+> compile
+# this change adds a comment and does not change api so introduces
+# only one additional compile iteration
+$ copy-file changes/Bar1.scala src/main/scala/Bar.scala
+# second iteration
+#> compile
+# check if there are only two compile iterations performed
+> check-number-of-compiler-iterations 2

bridge/src/sbt-test/source-dependencies/abstract-type/A.scala

@@ -0,0 +1,3 @@
+trait A {
+	type S[_]
+}

bridge/src/sbt-test/source-dependencies/abstract-type/B.scala

@@ -0,0 +1,3 @@
+trait B extends A {
+	type F = S[Int]
+}

bridge/src/sbt-test/source-dependencies/abstract-type/changes/A.scala

@@ -0,0 +1,3 @@
+trait A {
+	type S
+}

bridge/src/sbt-test/source-dependencies/abstract-type/project/DottyInjectedPlugin.scala

@@ -0,0 +1,16 @@
+import sbt._
+import Keys._
+
+object DottyInjectedPlugin extends AutoPlugin {
+  override def requires = plugins.JvmPlugin
+  override def trigger = allRequirements
+
+  override val projectSettings = Seq(
+    scalaVersion := "0.1-SNAPSHOT",
+    scalacOptions += "-language:Scala2",
+    scalaBinaryVersion  := "2.11",
+    autoScalaLibrary := false,
+    libraryDependencies ++= Seq("org.scala-lang" % "scala-library" % "2.11.5"),
+    scalaCompilerBridgeSource := ("ch.epfl.lamp" % "dotty-bridge" % "0.1-SNAPSHOT" % "component").sources()
+  )
+}

bridge/src/sbt-test/source-dependencies/abstract-type/test

@@ -0,0 +1,7 @@
+> compile
+
+# remove type arguments from S
+$ copy-file changes/A.scala A.scala
+
+# Both A.scala and B.scala should be recompiled, producing a compile error
+-> compile

bridge/src/sbt-test/source-dependencies/added/changes/A1.scala

@@ -0,0 +1,6 @@
+package example
+
+object A
+{
+	val x: Int = 3
+}

bridge/src/sbt-test/source-dependencies/added/changes/A2.scala

@@ -0,0 +1,6 @@
+package example
+
+object A
+{
+	val x: Int = B.y
+}

bridge/src/sbt-test/source-dependencies/added/changes/A3.scala

@@ -0,0 +1,6 @@
+package example
+
+object A
+{
+	val x: String = B.y
+}

bridge/src/sbt-test/source-dependencies/added/changes/B1.scala

@@ -0,0 +1,6 @@
+package example
+
+object B
+{
+	val y: String = "4"
+}

bridge/src/sbt-test/source-dependencies/added/changes/B2.scala

@@ -0,0 +1,6 @@
+package example
+
+object B
+{
+	val y: Int = 5
+}

bridge/src/sbt-test/source-dependencies/added/project/DottyInjectedPlugin.scala

@@ -0,0 +1,16 @@
+import sbt._
+import Keys._
+
+object DottyInjectedPlugin extends AutoPlugin {
+  override def requires = plugins.JvmPlugin
+  override def trigger = allRequirements
+
+  override val projectSettings = Seq(
+    scalaVersion := "0.1-SNAPSHOT",
+    scalacOptions += "-language:Scala2",
+    scalaBinaryVersion  := "2.11",
+    autoScalaLibrary := false,
+    libraryDependencies ++= Seq("org.scala-lang" % "scala-library" % "2.11.5"),
+    scalaCompilerBridgeSource := ("ch.epfl.lamp" % "dotty-bridge" % "0.1-SNAPSHOT" % "component").sources()
+  )
+}

bridge/src/sbt-test/source-dependencies/added/test

@@ -0,0 +1,28 @@
+# This test checks that when a source file included in a partial recompilation adds a dependency on
+# a file not included in the partial recompilation,  the dependency is properly recorded.
+
+# B and A are independent, so both should compile successfully
+$ copy-file changes/A1.scala src/main/scala/A.scala
+$ copy-file changes/B1.scala src/main/scala/B.scala
+> compile
+
+
+# A now depends on B and to check that it was recompiled, we mismatch the types, which should fail
+$ copy-file changes/A2.scala src/main/scala/A.scala
+-> compile
+
+
+# We now correct the type so that it compiles successfully and this should introduce a dependency from A to B
+$ copy-file changes/A3.scala src/main/scala/A.scala
+> compile
+
+
+# If the dependency from A to B was properly introduced, changing the type of B.y to Int should make
+# the following statement in A a compiler error:
+#   val x: String = B.y
+$ copy-file changes/B2.scala src/main/scala/B.scala
+-> compile
+
+# verify this was the correct result by doing a clean+compile
+> clean
+-> compile

bridge/src/sbt-test/source-dependencies/as-seen-from-a/A.scala

@@ -0,0 +1,6 @@
+abstract class A {
+  type T
+  object X {
+    def foo(x: T): T = x
+  }
+}

bridge/src/sbt-test/source-dependencies/as-seen-from-a/B.scala

@@ -0,0 +1,3 @@
+class B extends A {
+  type T = Int
+}

bridge/src/sbt-test/source-dependencies/as-seen-from-a/C.scala

@@ -0,0 +1 @@
+object C extends B

bridge/src/sbt-test/source-dependencies/as-seen-from-a/D.scala

@@ -0,0 +1,3 @@
+object D {
+  C.X.foo(12)
+}

bridge/src/sbt-test/source-dependencies/as-seen-from-a/changes/B2.scala

@@ -0,0 +1,3 @@
+class B extends A {
+  type T = String
+}

bridge/src/sbt-test/source-dependencies/as-seen-from-a/project/DottyInjectedPlugin.scala

@@ -0,0 +1,16 @@
+import sbt._
+import Keys._
+
+object DottyInjectedPlugin extends AutoPlugin {
+  override def requires = plugins.JvmPlugin
+  override def trigger = allRequirements
+
+  override val projectSettings = Seq(
+    scalaVersion := "0.1-SNAPSHOT",
+    scalacOptions += "-language:Scala2",
+    scalaBinaryVersion  := "2.11",
+    autoScalaLibrary := false,
+    libraryDependencies ++= Seq("org.scala-lang" % "scala-library" % "2.11.5"),
+    scalaCompilerBridgeSource := ("ch.epfl.lamp" % "dotty-bridge" % "0.1-SNAPSHOT" % "component").sources()
+  )
+}

bridge/src/sbt-test/source-dependencies/as-seen-from-a/test

@@ -0,0 +1,3 @@
+> compile
+$ copy-file changes/B2.scala B.scala
+-> compile

bridge/src/sbt-test/source-dependencies/as-seen-from-b/A.scala

@@ -0,0 +1,7 @@
+abstract class A {
+  type T <: S
+  type S
+  object X {
+    def foo: T = null.asInstanceOf[T]
+  }
+}

bridge/src/sbt-test/source-dependencies/as-seen-from-b/B.scala

@@ -0,0 +1,3 @@
+class B extends A {
+  type S <: Int
+}

bridge/src/sbt-test/source-dependencies/as-seen-from-b/C.scala

@@ -0,0 +1 @@
+object C extends B

bridge/src/sbt-test/source-dependencies/as-seen-from-b/D.scala

@@ -0,0 +1,3 @@
+object D {
+  val x: Int = C.X.foo
+}

bridge/src/sbt-test/source-dependencies/as-seen-from-b/changes/B2.scala

@@ -0,0 +1,3 @@
+class B extends A {
+  type S <: String
+}

bridge/src/sbt-test/source-dependencies/as-seen-from-b/project/DottyInjectedPlugin.scala

@@ -0,0 +1,16 @@
+import sbt._
+import Keys._
+
+object DottyInjectedPlugin extends AutoPlugin {
+  override def requires = plugins.JvmPlugin
+  override def trigger = allRequirements
+
+  override val projectSettings = Seq(
+    scalaVersion := "0.1-SNAPSHOT",
+    scalacOptions += "-language:Scala2",
+    scalaBinaryVersion  := "2.11",
+    autoScalaLibrary := false,
+    libraryDependencies ++= Seq("org.scala-lang" % "scala-library" % "2.11.5"),
+    scalaCompilerBridgeSource := ("ch.epfl.lamp" % "dotty-bridge" % "0.1-SNAPSHOT" % "component").sources()
+  )
+}

bridge/src/sbt-test/source-dependencies/as-seen-from-b/test

@@ -0,0 +1,3 @@
+> compile
+$ copy-file changes/B2.scala B.scala
+-> compile

bridge/src/sbt-test/source-dependencies/backtick-quoted-names/A.scala

@@ -0,0 +1,3 @@
+object A {
+   def `=` = 3
+}

bridge/src/sbt-test/source-dependencies/backtick-quoted-names/B.scala

@@ -0,0 +1,3 @@
+object B extends dotty.runtime.LegacyApp {
+   println(A.`=`)
+}

bridge/src/sbt-test/source-dependencies/backtick-quoted-names/build.sbt

@@ -0,0 +1 @@
+incOptions := incOptions.value.withNameHashing(true)

bridge/src/sbt-test/source-dependencies/backtick-quoted-names/changes/A.scala

@@ -0,0 +1,3 @@
+object A {
+   def asdf = 3
+}

bridge/src/sbt-test/source-dependencies/backtick-quoted-names/project/DottyInjectedPlugin.scala

@@ -0,0 +1,16 @@
+import sbt._
+import Keys._
+
+object DottyInjectedPlugin extends AutoPlugin {
+  override def requires = plugins.JvmPlugin
+  override def trigger = allRequirements
+
+  override val projectSettings = Seq(
+    scalaVersion := "0.1-SNAPSHOT",
+    scalacOptions += "-language:Scala2",
+    scalaBinaryVersion  := "2.11",
+    autoScalaLibrary := false,
+    libraryDependencies ++= Seq("org.scala-lang" % "scala-library" % "2.11.5"),
+    scalaCompilerBridgeSource := ("ch.epfl.lamp" % "dotty-bridge" % "0.1-SNAPSHOT" % "component").sources()
+  )
+}

bridge/src/sbt-test/source-dependencies/backtick-quoted-names/test

@@ -0,0 +1,7 @@
+> compile
+
+# rename def with symbolic name (`=`)
+$ copy-file changes/A.scala A.scala
+
+# Both A.scala and B.scala should be recompiled, producing a compile error
+-> compile