Adding tests for method calls in foreign namespaces
diff --git a/tests/ffi/lib.rs b/tests/ffi/lib.rs
index a491ae2..be145f3 100644
--- a/tests/ffi/lib.rs
+++ b/tests/ffi/lib.rs
@@ -4,6 +4,7 @@
     clippy::trivially_copy_pass_by_ref
 )]
 
+pub mod class_in_ns;
 pub mod extra;
 pub mod module;