Tests for enable_if

[SVN r1401]

test/enable_if_constructors.cpp

@@ -0,0 +1,44 @@
+//
+//    Copyright 2003 © The Trustees of Indiana University.  All rights
+//    reserved.
+//
+//    See the file enable_if_LICENSE for licensing conditions.
+//
+//    Authors: Jaakko Järvi (jajarvi@osl.iu.edu)
+//             Jeremiah Willcock (jewillco@osl.iu.edu)
+//             Andrew Lumsdaine (lums@osl.iu.edu)
+//
+
+#include <boost/test/minimal.hpp>
+
+#include <boost/utility/enable_if.hpp>
+#include <boost/type_traits.hpp>
+
+using boost::enable_if;
+using boost::disable_if;
+using boost::is_arithmetic;
+
+struct container {
+  bool my_value;
+
+  template <class T>
+  container(const T&, const typename enable_if<is_arithmetic<T>::value, T>::type * = 0):
+  my_value(true) {}
+
+  template <class T>
+  container(const T&, const typename disable_if<is_arithmetic<T>::value, T>::type * = 0):
+  my_value(false) {}
+};
+
+int test_main(int, char*[])
+{
+ 
+  BOOST_TEST(container(1).my_value);
+  BOOST_TEST(container(1.0).my_value);
+
+  BOOST_TEST(!container("1").my_value);  
+  BOOST_TEST(!container(static_cast<void*>(0)).my_value);  
+
+  return 0;
+}
+