Added tests for support/pair

test/support/pair_conversion.cpp

@@ -0,0 +1,42 @@
+/*=============================================================================
+    Copyright (c) 2018 Kohei Takahashi
+
+    Distributed under the Boost Software License, Version 1.0. (See accompanying
+    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+==============================================================================*/
+
+#include <utility>
+#include <boost/config.hpp>
+#include <boost/fusion/support/pair.hpp>
+
+using namespace boost::fusion;
+
+struct eat_int
+{
+    eat_int(int);
+};
+
+struct eat_pair
+{
+    template <typename K, typename V>
+    eat_pair(pair<K, V>);
+};
+
+int main()
+{
+    pair<void, int> p;
+
+    pair<void, eat_int> ci(p);
+
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+    pair<void, eat_int> mi(std::move(p));
+#endif
+
+    // eat_pair can't be converted from int, but can be pair.
+    // So pair(eat_pair) should be called rather than pair(pair<void, eat_pair>).
+    pair<void, eat_pair> cp(p);
+
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+    pair<void, eat_pair> mp(std::move(p));
+#endif
+}