decorator constructor is constrained

2019-04-02 16:49:05 -07:00
parent a4974e18ba
commit 7c084509d6
4 changed files with 69 additions and 1 deletions
@@ -19,6 +19,40 @@ namespace websocket {
 class stream_base_test : public unit_test::suite
 {
 public:
+    struct T1
+    {
+        void operator()(request_type&);
+    };
+
+    struct T2
+    {
+        void operator()(response_type&);
+    };
+
+    struct T3
+    {
+        void operator()(request_type&);
+        void operator()(response_type&);
+    };
+
+    struct T4
+    {
+        template<class T>
+        void operator()(T&);
+    };
+
+    struct T5
+    {
+        void operator()();
+    };
+
+    BOOST_STATIC_ASSERT(detail::is_decorator<T1>::value);
+    BOOST_STATIC_ASSERT(detail::is_decorator<T2>::value);
+    BOOST_STATIC_ASSERT(detail::is_decorator<T3>::value);
+    BOOST_STATIC_ASSERT(detail::is_decorator<T4>::value);
+    BOOST_STATIC_ASSERT(! detail::is_decorator<T5>::value);
+    BOOST_STATIC_ASSERT(! detail::is_decorator<int>::value);
+
    void
    testJavadoc()
    {