Added named params tests

[SVN r1695]

test/Jamfile

@@ -3,15 +3,12 @@
 subproject libs/utility/test ;
 
 # bring in rules for testing
-SEARCH on testing.jam = $(BOOST_BUILD_PATH) ;
-include testing.jam ;
+import testing ;
 
 {
-    # look in BOOST_ROOT for sources first, just in this Jamfile
-    local SEARCH_SOURCE = $(BOOST_ROOT) $(SEARCH_SOURCE) ;
-
     test-suite "utility"
-       : [ run libs/utility/test/lexicographic_test.cpp ]
-         [ run libs/utility/test/lex_performance_test.cpp ]
+       : [ run lexicographic_test.cpp ]
+         [ run lex_performance_test.cpp ]
+         [ run named_params_test.cpp ]
        ;
 }

test/named_params_test.cpp

@@ -0,0 +1,83 @@
+// Copyright Daniel Wallin 2003. Use, modification and distribution is
+// subject to the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE-1.0 or http://www.boost.org/LICENSE-1.0)
+
+#include <iostream>
+#include <boost/named_params.hpp>
+#include <boost/type_traits/is_convertible.hpp>
+#include <cassert>
+
+namespace test {
+
+using boost::keyword;
+using boost::keywords;
+   
+struct name_t : keyword<name_t>
+{
+   // this should go in a wrapper type, like arg<keyword, predicate>
+   typedef boost::is_convertible<boost::mpl::_1, const char*> predicate_type;
+   using keyword<name_t>::operator=;
+} name;
+
+struct value_t : keyword<value_t>
+{
+   using keyword<value_t>::operator=;
+} value;
+
+struct index_t : keyword<index_t>
+{
+   using keyword<index_t>::operator=;
+} index;
+
+typedef keywords<
+     name_t
+   , value_t
+   , index_t
+> f_keywords;
+
+template<class Params>
+int f_impl(const Params& p)
+{
+   std::cout << "-------- f --------" << std::endl;
+   // name has no default
+   std::cout << "name = " << p[name] << std::endl;
+   std::cout << "value = " << p[value | 666.222] << std::endl;
+   std::cout << "index = " << p[index | 999] << std::endl;
+   return 1;
+}
+
+template<class Name, class Value, class Index>
+int f(const Name& name_, const Value& value_, const Index& index_,
+      typename f_keywords::restrict<Name, Value, Index>::type x = f_keywords())
+{
+   return f_impl(x(name_, value_, index_));
+}
+
+template<class Name, class Value>
+int f(const Name& name_, const Value& value_, 
+      typename f_keywords::restrict<Name, Value>::type x = f_keywords())
+{
+   return f_impl(x(name_, value_));
+}
+
+template<class Name>
+int f(const Name& name_, 
+      typename f_keywords::restrict<Name>::type x = f_keywords())
+{
+   return f_impl(x(name_));
+}
+
+}
+
+int main()
+{
+   using test::f;
+   using test::name;
+   using test::value;
+   using test::index;
+
+   f("foo", "bar", "baz");
+   f(index = 56, name = "foo");
+   //f(index = 56, name = 55); // won't compile
+}
+