From c50dd580bdd190ca4586b5ad2e2790b366b6d5aa Mon Sep 17 00:00:00 2001
From: Henry Fredrick Schreiner <henry.fredrick.schreiner@cern.ch>
Date: Fri, 17 Mar 2017 13:30:14 -0400
Subject: [PATCH] HorribleError for subcommand test

---
 include/CLI/App.hpp | 7 +++++++
 tests/AppTest.cpp   | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/include/CLI/App.hpp b/include/CLI/App.hpp
index d5065772..87c8b69e 100644
--- a/include/CLI/App.hpp
+++ b/include/CLI/App.hpp
@@ -1081,6 +1081,13 @@ struct AppFriend {
         return app->_parse_long(std::forward<Args>(args)...);
     }
 
+    /// Wrap _parse_subcommand, perfectly forward arguments and return
+    template<typename ...Args>
+    static auto parse_subcommand(App* app, Args &&  ...args)
+      -> typename std::result_of<decltype(&App::_parse_subcommand)(App, Args...)>::type {
+        return app->_parse_subcommand(std::forward<Args>(args)...);
+    }
+
 };
 }
 
diff --git a/tests/AppTest.cpp b/tests/AppTest.cpp
index bc50beb9..ec01a987 100644
--- a/tests/AppTest.cpp
+++ b/tests/AppTest.cpp
@@ -803,3 +803,10 @@ TEST_F(TApp, CheckLongFail) {
 
     EXPECT_THROW(CLI::detail::AppFriend::parse_long(&app, args), CLI::HorribleError);
 }
+
+// Test horrible error
+TEST_F(TApp, CheckSubcomFail) {
+    args = {"subcom"};
+
+    EXPECT_THROW(CLI::detail::AppFriend::parse_long(&app, args), CLI::HorribleError);
+}