diff --git a/test/test_interfaces.jl b/test/test_interfaces.jl
index 1158e90..37eaeaf 100644
--- a/test/test_interfaces.jl
+++ b/test/test_interfaces.jl
@@ -10,4 +10,10 @@ using JuliaFEM.interfaces: solve_elasticity_interface!
 facts("test solve_elasticity_interface!") do
   test = solve_elasticity_interface!()
   @pending
-end
\ No newline at end of file
+end
+
+
+facts("test interface modules") do
+  test = solve_elasticity_interface!() 
+  @assert test == 0 
+end