diff --git a/testing/input_files/bilayer.inp b/testing/input_files/bilayer.inp
new file mode 100644
index 0000000..6443514
--- /dev/null
+++ b/testing/input_files/bilayer.inp
@@ -0,0 +1,40 @@
+#
+# Lipid double layer with water above and below
+#
+
+tolerance 2.0 
+filetype pdb
+output output.pdb
+
+structure ./structure_files/water.pdb 
+  number 50
+  inside box 0. 0. -10. 40. 40. 0.
+end structure
+
+structure ./structure_files/water.pdb
+  number 50
+  inside box 0. 0. 28. 40. 40. 38.
+end structure
+
+structure ./structure_files/palmitoil.pdb 
+  number 10
+  inside box 0. 0. 0. 40. 40. 14.
+  atoms 31 32
+    below plane 0. 0. 1. 2.
+  end atoms
+  atoms 1 2
+    above plane 0. 0. 1. 12.
+  end atoms
+end structure 
+
+structure ./structure_files/palmitoil.pdb 
+  number 10
+  inside box 0. 0. 14. 40. 40. 28.
+  atoms 1 2
+    below plane 0. 0. 1. 16.
+  end atoms
+  atoms 31 32
+    above plane 0. 0. 1. 26 
+  end atoms
+end structure 
+
diff --git a/testing/test.sh b/testing/test.sh
index 0b26532..b8d1242 100755
--- a/testing/test.sh
+++ b/testing/test.sh
@@ -6,7 +6,8 @@ curl -fsSL https://install.julialang.org | sh
 julia runtests.jl ./input_files/water_box.inp \
                   ./input_files/ieee_signaling.inp \
                   ./input_files/mixture.inp \
-                  ./input_files/spherical.inp
+                  ./input_files/spherical.inp \
+                  ./input_files/bilayer.inp
 
 # check if output files are properly generated in a failed run
 ./test_failed.sh ./input_files/water_box_failed.inp packmol.log "FORCED"