Add basic scripted test

build.sbt

@@ -400,9 +400,22 @@ lazy val plugin = project
     sbtPlugin := {
       scalaVersion.value.startsWith("2.10.")
     },
-    // added so that 2.10 artifacts of the other modules can be found by
-    // the too-naive-for-now inter-project resolver of the coursier SBT plugin
-    resolvers += Resolver.sonatypeRepo("snapshots")
+    resolvers ++= Seq(
+      // added so that 2.10 artifacts of the other modules can be found by
+      // the too-naive-for-now inter-project resolver of the coursier SBT plugin
+      Resolver.sonatypeRepo("snapshots"),
+      // added for sbt-scripted to be fine even with ++2.11.x
+      Resolver.typesafeIvyRepo("releases")
+    )
+  )
+  .settings(ScriptedPlugin.scriptedSettings)
+  .settings(
+    scriptedLaunchOpts ++= Seq(
+      "-Xmx1024M",
+      "-XX:MaxPermSize=256M",
+      "-Dplugin.version=" + version.value
+    ),
+    scriptedBufferLog := false
   )
 
 lazy val `coursier` = project.in(file("."))

plugin/src/sbt-test/sbt-coursier/simple/build.sbt

@@ -0,0 +1 @@
+scalaVersion := "2.11.8"

plugin/src/sbt-test/sbt-coursier/simple/project/plugins.sbt

@@ -0,0 +1,11 @@
+{
+  val pluginVersion = sys.props.getOrElse(
+    "plugin.version",
+    throw new RuntimeException(
+      """|The system property 'plugin.version' is not defined.
+         |Specify this property using the scriptedLaunchOpts -D.""".stripMargin
+    )
+  )
+
+  addSbtPlugin("io.get-coursier" % "sbt-coursier" % pluginVersion)
+}

plugin/src/sbt-test/sbt-coursier/simple/src/main/scala/Main.scala

@@ -0,0 +1,6 @@
+import java.io.File
+import java.nio.file.Files
+
+object Main extends App {
+  Files.write(new File("output").toPath, "OK".getBytes("UTF-8"))
+}

plugin/src/sbt-test/sbt-coursier/simple/test

@@ -0,0 +1,3 @@
+$ delete output
+> run
+$ exists output

project/plugins.sbt

@@ -6,3 +6,4 @@ addSbtPlugin("org.tpolecat" % "tut-plugin" % "0.4.0")
 addSbtPlugin("com.github.alexarchambault" % "coursier-sbt-plugin" % "1.0.0-M8")
 addSbtPlugin("com.typesafe.sbt" % "sbt-proguard" % "0.2.2")
 addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "0.1.8")
+libraryDependencies += "org.scala-sbt" % "scripted-plugin" % sbtVersion.value