diff --git a/Tests/OutOfSource/CMakeLists.txt b/Tests/OutOfSource/CMakeLists.txt
new file mode 100644
index 0000000000..75b48b665c
--- /dev/null
+++ b/Tests/OutOfSource/CMakeLists.txt
@@ -0,0 +1,3 @@
+# a simple test case
+PROJECT (OutOfSource)
+SUBDIRS(SubDir)
diff --git a/Tests/OutOfSource/OutOfSourceSubdir/CMakeLists.txt b/Tests/OutOfSource/OutOfSourceSubdir/CMakeLists.txt
new file mode 100644
index 0000000000..15467c9cec
--- /dev/null
+++ b/Tests/OutOfSource/OutOfSourceSubdir/CMakeLists.txt
@@ -0,0 +1 @@
+ADD_EXECUTABLE (simple simple.cxx)
diff --git a/Tests/OutOfSource/OutOfSourceSubdir/simple.cxx b/Tests/OutOfSource/OutOfSourceSubdir/simple.cxx
new file mode 100644
index 0000000000..1482f27e53
--- /dev/null
+++ b/Tests/OutOfSource/OutOfSourceSubdir/simple.cxx
@@ -0,0 +1,4 @@
+int main ()
+{
+  return 0;
+}
diff --git a/Tests/OutOfSource/SubDir/CMakeLists.txt b/Tests/OutOfSource/SubDir/CMakeLists.txt
new file mode 100644
index 0000000000..905f2bccb8
--- /dev/null
+++ b/Tests/OutOfSource/SubDir/CMakeLists.txt
@@ -0,0 +1,2 @@
+# subdir to a sibling dir
+SUBDIRS(${PROJECT_SOURCE_DIR}/OutOfSourceSubdir)