Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 31 insertions, 0 deletions

diff --git a/src/boost/libs/hana/test/concept/constant/mcd.cpp b/src/boost/libs/hana/test/concept/constant/mcd.cpp
new file mode 100644
index 00000000..f45327cd
--- /dev/null
+++ b/src/boost/libs/hana/test/concept/constant/mcd.cpp
@@ -0,0 +1,31 @@
+// Copyright Louis Dionne 2013-2017
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+
+#include "minimal.hpp"
+
+#include <boost/hana/concept/constant.hpp>
+#include <boost/hana/value.hpp>
+namespace hana = boost::hana;
+
+
+// Make sure we really satisfy Constant.
+static_assert(hana::Constant<minimal_constant<int, 0>>::value, "");
+static_assert(hana::Constant<minimal_constant<int, 1>>::value, "");
+static_assert(hana::Constant<minimal_constant<int, 2>>::value, "");
+static_assert(hana::Constant<minimal_constant<int, 3>>::value, "");
+
+// Make sure we can use hana::value<> properly.
+static_assert(hana::value<minimal_constant<int, 0>>() == 0, "");
+static_assert(hana::value<minimal_constant<int, 1>>() == 1, "");
+static_assert(hana::value<minimal_constant<int, 2>>() == 2, "");
+static_assert(hana::value<minimal_constant<int, 3>>() == 3, "");
+
+// Check the equivalence between `value(...)` and `value<decltype(...)>()`.
+static_assert(hana::value(minimal_constant<int, 0>{}) == hana::value<minimal_constant<int, 0>>(), "");
+static_assert(hana::value(minimal_constant<int, 1>{}) == hana::value<minimal_constant<int, 1>>(), "");
+static_assert(hana::value(minimal_constant<int, 2>{}) == hana::value<minimal_constant<int, 2>>(), "");
+static_assert(hana::value(minimal_constant<int, 3>{}) == hana::value<minimal_constant<int, 3>>(), "");
+
+
+int main() { }