diff --git a/v4/ctx_test2.cpp b/v4/ctx_test2.cpp
index ca60a61..d9b4d63 100644
--- a/v4/ctx_test2.cpp
+++ b/v4/ctx_test2.cpp
@@ -7,7 +7,7 @@ std::string s(const char *str) {
   return std::string(str);
 }
 
-std::string ctx_test_Controller_executeFunctions_set() {
+std::string test_ctx_Controller_executeFunctions_set() {
   auto c = memory_createContext();
   ctx_Controller<memory_Context> ctrl(c);
   // Disable automatic invocation of executeFunctions.
@@ -29,14 +29,6 @@ std::string ctx_test_Controller_executeFunctions_set() {
   ctrl.executeFunctions();
   // Apply 'outputHelp'.
   ctrl.executeFunctions();
-  std::cout 
-    << "input: '" 
-    << ctrl.context.input 
-    << "'" 
-    << ((ctrl.context.input == "123") ? "1" : "0")
-    << " "
-    << ((ctrl.context.outputHelp == "Checked") ? "1" : "0")
-    << std::endl;
   if (
     ctrl.context.input == "123" &&
     ctrl.context.outputHelp == "Checked"
@@ -45,3 +37,29 @@ std::string ctx_test_Controller_executeFunctions_set() {
   }
   return "ERR: ctx_Controller_executeFunctions_set";
 }
+
+std::string test_ctx_Controller_processQueue() {
+  auto c = memory_createContext();
+  ctx_Controller<memory_Context> ctrl(c);
+
+  auto processInput = [](memory_Context c) -> memory_Context {
+    if (c.recentField == "input") {
+      c.outputHelp = "Checked";
+      c.recentField = "outputHelp";
+      return c;
+    }
+    c.recentField = "none";
+    return c;
+  };
+
+  ctrl.registerFunction(processInput);
+  ctrl.set("input", s("abc"));
+  if (
+    ctrl.context.input == "abc" &&
+    ctrl.context.outputHelp == "Checked"
+  ) {
+    return "OK: ctx_Controller_processQueue";
+  }
+  return "ERR: ctx_Controller_processQueue";
+}
+
diff --git a/v4/ctx_test2.h b/v4/ctx_test2.h
index 99230ca..2f8a794 100644
--- a/v4/ctx_test2.h
+++ b/v4/ctx_test2.h
@@ -3,6 +3,7 @@
 #ifndef ctx_test_HEADER
 #define ctx_test_HEADER
 
-std::string ctx_test_Controller_executeFunctions_set();
+std::string test_ctx_Controller_executeFunctions_set();
+std::string test_ctx_Controller_processQueue();
 
 #endif // ctx_test_HEADER
diff --git a/v4/main.cpp b/v4/main.cpp
index 05bac98..e2e5d00 100644
--- a/v4/main.cpp
+++ b/v4/main.cpp
@@ -7,7 +7,9 @@
 
 int main() {
   std::cout
-    << ctx_test_Controller_executeFunctions_set()
+    << test_ctx_Controller_executeFunctions_set()
+    << std::endl
+    << test_ctx_Controller_processQueue()
     << std::endl
     << llm_test_isDigit_digit()
     << std::endl