Add shadow tests for CompositeProjects

sbt/src/sbt-test/project/sbt-composite-projects/build.sbt

@@ -1,8 +1,10 @@
 import sbt.internal.AddSettings
 import sbt.CompositeProject
 
+lazy val check = taskKey[Unit]("check")
+
 // Based on sbt-file-projects test
-val cross = new CompositeProject
+lazy val cross = new CompositeProject
 {
   val p1 = Project.apply("a", new File("a"))
   val p2 = Project.apply("b", new File("b"))
@@ -11,3 +13,12 @@ val cross = new CompositeProject
 
 val g = taskKey[Unit]("A task in the root project")
 g := println("Hello.")
+
+
+check := {
+  val verP1 = (version in cross.p1).?.value
+  assert (verP1 == Some("0.1.0-SNAPSHOT"))
+
+  val verP2 = (version in cross.p2).?.value
+  assert (verP2 == Some("0.1.0-SNAPSHOT"))
+}

sbt/src/sbt-test/project/sbt-composite-projects/changes/shadow.sbt

@@ -0,0 +1,40 @@
+import sbt.internal.AddSettings
+import sbt.CompositeProject
+
+lazy val check = taskKey[Unit]("check")
+
+lazy val a = (project in file("a"))
+  .settings(
+    version := "0.2.0"
+  )
+
+// Based on sbt-file-projects test
+lazy val cross = new CompositeProject
+{
+  val p1 = Project.apply("a", new File("a"))
+  val p2 = Project.apply("b", new File("b"))
+  def componentProjects: Seq[Project] = Seq(p1, p2)
+}
+
+lazy val b = (project in file("b"))
+  .settings(
+    version := "0.2.0"
+  )
+
+val g = taskKey[Unit]("A task in the root project")
+g := println("Hello.")
+
+
+check := {
+  val verP1 = (version in cross.p1).?.value
+  assert (verP1 == Some("0.2.0"))//Some("0.1.0-SNAPSHOT"))
+
+  val verP2 = (version in cross.p2).?.value
+  assert (verP2 == Some("0.1.0-SNAPSHOT"))
+
+  val verA = (version in a).?.value
+  assert (verA == Some("0.2.0"))
+
+  val verB = (version in b).?.value
+  assert (verA == Some("0.2.0"))
+}

sbt/src/sbt-test/project/sbt-composite-projects/test

@@ -15,3 +15,8 @@ $ copy-file changes/basic.sbt basic.sbt
 > b/compile
 > b/h
 > c/compile
+> check
+
+$ copy-file changes/shadow.sbt build.sbt
+> reload
+> check