Fix tests.

CHANGELOG.md

@@ -10,7 +10,7 @@ Bug fixes
 * Self-contained `AST` now works properly with `Engine::call_fn`.
 * Missing `to_int` from `Decimal` is added.
 * Parsing of index expressions is relaxed and many cases no longer result in an index-type error to allow for custom indexers.
-* Merging a self-contained `AST` into another `AST` now works properly.
+* Merging or combining a self-contained `AST` into another `AST` now works properly.
 
 Deprecated API's
 ----------------

tests/modules.rs

@@ -285,12 +285,16 @@ fn test_module_resolver() -> Result<(), Box<EvalAltResult>> {
 
         let mut ast2 = engine.compile("fn foo(x) { 42 }")?;
 
+        #[cfg(feature = "internals")]
         let len = ast.resolver().unwrap().len();
 
         ast2 += ast;
 
+        #[cfg(feature = "internals")]
+        {
             assert!(ast2.resolver().is_some());
             assert_eq!(ast2.resolver().unwrap().len(), len);
+        }
 
         let result: INT = engine.call_fn(&mut Scope::new(), &ast2, "foo", (2 as INT,))?;