1 files changed, 74 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/map/cnstr.default.cpp b/src/boost/libs/hana/test/map/cnstr.default.cpp
new file mode 100644
index 000000000..cd1320c8f
--- /dev/null
+++ b/src/boost/libs/hana/test/map/cnstr.default.cpp
@@ -0,0 +1,74 @@
+// 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 <boost/hana/bool.hpp>
+#include <boost/hana/fwd/hash.hpp>
+#include <boost/hana/map.hpp>
+#include <boost/hana/pair.hpp>
+#include <boost/hana/type.hpp>
+
+#include <type_traits>
+namespace hana = boost::hana;
+
+
+struct NoDefault {
+    NoDefault() = delete;
+    NoDefault(NoDefault const&) = default;
+    constexpr explicit NoDefault(int) { }
+};
+
+auto operator==(NoDefault const&, NoDefault const&) { return hana::true_c; }
+auto operator!=(NoDefault const&, NoDefault const&) { return hana::false_c; }
+
+// Note: It is also useful to check with a non-empty class, because that
+//       triggers different instantiations due to EBO.
+struct NoDefault_nonempty {
+    NoDefault_nonempty() = delete;
+    NoDefault_nonempty(NoDefault_nonempty const&) = default;
+    constexpr explicit NoDefault_nonempty(int k) : i(k) { }
+    int i;
+};
+
+auto operator==(NoDefault_nonempty const&, NoDefault_nonempty const&) { return hana::true_c; }
+auto operator!=(NoDefault_nonempty const&, NoDefault_nonempty const&) { return hana::false_c; }
+
+struct Default {
+    Default() = default;
+    Default(Default const&) = default;
+    constexpr explicit Default(int) { }
+};
+
+auto operator==(Default const&, Default const&) { return hana::true_c; }
+auto operator!=(Default const&, Default const&) { return hana::false_c; }
+
+namespace boost { namespace hana {
+    template <>
+    struct hash_impl<NoDefault> {
+        static constexpr auto apply(NoDefault const&)
+        { return hana::type_c<NoDefault>; };
+    };
+
+    template <>
+    struct hash_impl<NoDefault_nonempty> {
+        static constexpr auto apply(NoDefault_nonempty const&)
+        { return hana::type_c<NoDefault_nonempty>; };
+    };
+
+    template <>
+    struct hash_impl<Default> {
+        static constexpr auto apply(Default const&)
+        { return hana::type_c<Default>; };
+    };
+}}
+
+int main() {
+    auto map1 = hana::make_map(hana::make_pair(Default(1), Default(1)));
+    static_assert(std::is_default_constructible<decltype(map1)>::value, "");
+
+    auto map2 = hana::make_map(hana::make_pair(NoDefault(1), NoDefault(1)));
+    static_assert(!std::is_default_constructible<decltype(map2)>::value, "");
+
+    auto map3 = hana::make_map(hana::make_pair(NoDefault_nonempty(1), NoDefault_nonempty(1)));
+    static_assert(!std::is_default_constructible<decltype(map3)>::value, "");
+}