now the unittests compile. \o/ All declared functions & variables are defined.

src/types.cc

@@ -52,7 +52,17 @@ namespace pEp
         }
         return sp;
     }
-
+    
+    template<>
+    template<>
+    ::stringpair_t* Wrapper<::stringpair_t*>::_new(char* key, char* value)
+    {
+        return _new<const char*, const char*>(
+                const_cast<const char*>(key),
+                const_cast<const char*>(value)
+              );
+    }
+    
     template<>
     template<>
     ::stringpair_t* Wrapper<::stringpair_t*>::_new(const std::string& key, const std::string& value)
@@ -117,6 +127,23 @@ namespace pEp
     {
         stringpair_list_add(value, sp.move_out());
     }
+    
+    template<>
+    ListWrapper<::stringpair_list_t*, stringpair_t*>::ListWrapper(const std::initializer_list<StringPair>& il)
+    : StringPairList{}
+    {
+        ::stringpair_list_t* last  = nullptr;
+        for(const StringPair& sp : il)
+        {
+            last = stringpair_list_add(last, stringpair_dup(sp.get()));
+            if(last==nullptr)
+            {
+                throw std::runtime_error("Cannot create StringPairList from {}: Out Of Memory.");
+            }
+            if(value==nullptr)
+                value = last; // save the head of linked list.
+        }
+    }
 
 ////////////////
 
@@ -124,5 +151,6 @@ namespace pEp
     template class Wrapper<::stringpair_t>;
     
     template class Wrapper<::message>;
+    template class ListWrapper<::stringpair_list_t*, ::stringpair_t*>;
 
 } // end of namespace pEp

test/unittest_stringpair.cc

@@ -44,7 +44,7 @@ TEST( StringPair, Dynamic )
         EXPECT_EQ(spl.size(), u);
         snprintf(key, 15, "k%u", u);
         snprintf(value, 15, "v%u", u*91);
-        spl.push_back( pEp::StringPair{key, value}.move_out() );
+        spl.push_back( pEp::StringPair{key, value} );
     }
 
     auto find_by_key = [key](const ::stringpair_t* sp){ return strcmp(sp->key, key)==0; };