Exclude test config in pack

Currently when project dependencies are worked out in a multi-project build, there is no check to ensure that we are only including projects with a compile dependency, i.e. those with .dependsOn(module1) or .dependsOn(module1, "compile->...")

This fixes that issue and filters out projects that don't have compile dependencies.

src/main/scala/xerial/sbt/pack/PackPlugin.scala

@@ -414,13 +414,15 @@ object PackPlugin extends AutoPlugin with PackArchive {
     def transitiveDependencies(currentProject: ProjectRef): Seq[ProjectRef] = {
       def isExcluded(p: ProjectRef) = exclude.contains(p.project)
 
+      def isCompileConfig(cp: ClasspathDep[ProjectRef]) = cp.configuration.forall(_.contains("compile->"))
+
       // Traverse all dependent projects
       val children = Project
               .getProject(currentProject, structure)
               .toSeq
-              .flatMap{ _.dependencies.map(_.project) }
+              .flatMap{ _.dependencies.filter(isCompileConfig).map(_.project) }
 
-      (currentProject +: (children flatMap (transitiveDependencies(_)))) filterNot (isExcluded)
+      (currentProject +: (children flatMap transitiveDependencies)) filterNot (isExcluded)
     }
     val projects: Seq[ProjectRef] = transitiveDependencies(contextProject).distinct
     projects.map(p => (Def.task { ((targetTask in p).value, p) }) evaluate structure.data).join

src/sbt-test/sbt-pack/exclude-test-config/build.sbt

@@ -0,0 +1,40 @@
+scalaVersion in ThisBuild := "2.12.6"
+
+val commonSettings = Seq(
+  scalaVersion := "2.12.6",
+  version := "0.1",
+  crossPaths := false
+)
+
+lazy val module1 =
+  project
+    .settings(commonSettings)
+    .settings(
+      libraryDependencies ++= Seq(
+        "org.slf4j"         % "slf4j-api"   % "1.7.6"
+      ),
+    )
+    .enablePlugins(PackPlugin)
+
+lazy val module2 =
+  project
+    .settings(commonSettings)
+    .settings(
+      libraryDependencies ++= Seq(
+        "org.xerial.snappy" % "snappy-java" % "1.1.1.6"
+      )
+    )
+    .enablePlugins(PackPlugin)
+
+lazy val client =
+  project
+    .settings(commonSettings)
+    .dependsOn(module1, module2 % "test->test")
+    .enablePlugins(PackPlugin)
+
+lazy val server =
+  project
+    .dependsOn(module2)
+    .settings(commonSettings)
+    .dependsOn(module1, module2 % "compile->compile;test->test")
+    .enablePlugins(PackPlugin)

src/sbt-test/sbt-pack/exclude-test-config/client/src/main/scala/Client.scala

@@ -0,0 +1,5 @@
+package sample
+
+object Client {
+  def main(args: Array[String]) { println("hello client") }
+}

src/sbt-test/sbt-pack/exclude-test-config/module1/src/main/scala/Module1.scala

@@ -0,0 +1,5 @@
+package sample
+
+object Module1 {
+  def main(args: Array[String]) { println("hello module1") }
+}

src/sbt-test/sbt-pack/exclude-test-config/module2/src/main/scala/Module2.scala

@@ -0,0 +1,5 @@
+package sample
+
+object Module2 {
+  def main(args: Array[String]) { println("hello module2") }
+}

src/sbt-test/sbt-pack/exclude-test-config/project/plugins.sbt

@@ -0,0 +1,7 @@
+{
+  val pluginVersion = System.getProperty("plugin.version")
+  if(pluginVersion == null)
+    throw new RuntimeException("""|The system property 'plugin.version' is not defined.
+                                  |Specify this property using the scriptedLaunchOpts -D.""".stripMargin)
+  else addSbtPlugin("org.xerial.sbt" % "sbt-pack" % pluginVersion)
+}

src/sbt-test/sbt-pack/exclude-test-config/server/src/main/scala/Server.scala

@@ -0,0 +1,5 @@
+package sample
+
+object Server {
+  def main(args: Array[String]) { println("hello server") }
+}

src/sbt-test/sbt-pack/exclude-test-config/test

@@ -0,0 +1,16 @@
+#exec commands are system dependent and have been tested in a Linux environment
+> 'set version := "0.1"'
+
+>server/pack
+$exists server/target/pack/lib/slf4j-api-1.7.6.jar
+$exists server/target/pack/lib/module1-0.1.jar
+$exists server/target/pack/lib/snappy-java-1.1.1.6.jar
+$exists server/target/pack/lib/module2-0.1.jar
+$exists server/target/pack/lib/server-0.1.jar
+
+>client/pack
+$exists client/target/pack/lib/slf4j-api-1.7.6.jar
+$exists client/target/pack/lib/module1-0.1.jar
+$absent client/target/pack/lib/snappy-java-1.1.1.6.jar
+$absent client/target/pack/lib/module2-0.1.jar
+$exists client/target/pack/lib/client-0.1.jar