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Diffstat (limited to '3rdparty/asio/src/tests/properties/cpp11/prefer_unsupported.cpp')
-rw-r--r--3rdparty/asio/src/tests/properties/cpp11/prefer_unsupported.cpp59
1 files changed, 59 insertions, 0 deletions
diff --git a/3rdparty/asio/src/tests/properties/cpp11/prefer_unsupported.cpp b/3rdparty/asio/src/tests/properties/cpp11/prefer_unsupported.cpp
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index 00000000000..0eaaf9105c5
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+++ b/3rdparty/asio/src/tests/properties/cpp11/prefer_unsupported.cpp
@@ -0,0 +1,59 @@
+//
+// cpp11/prefer_unsupported.cpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// 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 "asio/prefer.hpp"
+#include <cassert>
+
+template <int>
+struct prop
+{
+ static constexpr bool is_preferable = true;
+};
+
+template <int>
+struct object
+{
+};
+
+namespace asio {
+
+template<int N, int M>
+struct is_applicable_property<object<N>, prop<M> >
+{
+ static constexpr bool value = true;
+};
+
+} // namespace asio
+
+int main()
+{
+ object<1> o1 = {};
+ object<1> o2 = asio::prefer(o1, prop<2>());
+ object<1> o3 = asio::prefer(o1, prop<2>(), prop<3>());
+ object<1> o4 = asio::prefer(o1, prop<2>(), prop<3>(), prop<4>());
+ (void)o2;
+ (void)o3;
+ (void)o4;
+
+ const object<1> o5 = {};
+ object<1> o6 = asio::prefer(o5, prop<2>());
+ object<1> o7 = asio::prefer(o5, prop<2>(), prop<3>());
+ object<1> o8 = asio::prefer(o5, prop<2>(), prop<3>(), prop<4>());
+ (void)o6;
+ (void)o7;
+ (void)o8;
+
+ constexpr object<1> o9 = asio::prefer(object<1>(), prop<2>());
+ constexpr object<1> o10 = asio::prefer(object<1>(), prop<2>(), prop<3>());
+ constexpr object<1> o11 = asio::prefer(object<1>(), prop<2>(), prop<3>(), prop<4>());
+ (void)o9;
+ (void)o10;
+ (void)o11;
+}