1 files changed, 70 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/pair/assign.move.cpp b/src/boost/libs/hana/test/pair/assign.move.cpp
new file mode 100644
index 000000000..5d3fd18df
--- /dev/null
+++ b/src/boost/libs/hana/test/pair/assign.move.cpp
@@ -0,0 +1,70 @@
+// 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/assert.hpp>
+#include <boost/hana/config.hpp>
+#include <boost/hana/first.hpp>
+#include <boost/hana/pair.hpp>
+#include <boost/hana/second.hpp>
+
+#include <utility>
+namespace hana = boost::hana;
+
+
+struct MoveOnly {
+    int data_;
+    MoveOnly(MoveOnly const&) = delete;
+    MoveOnly& operator=(MoveOnly const&) = delete;
+    MoveOnly(int data = 1) : data_(data) { }
+    MoveOnly(MoveOnly&& x) : data_(x.data_) { x.data_ = 0; }
+
+    MoveOnly& operator=(MoveOnly&& x)
+    { data_ = x.data_; x.data_ = 0; return *this; }
+
+    bool operator==(const MoveOnly& x) const { return data_ == x.data_; }
+};
+
+struct MoveOnlyDerived : MoveOnly {
+    MoveOnlyDerived(MoveOnlyDerived&&) = default;
+    MoveOnlyDerived(int data = 1) : MoveOnly(data) { }
+};
+
+constexpr auto in_constexpr_context(int a, short b) {
+    hana::pair<int, short> p1(a, b);
+    hana::pair<int, short> p2;
+    hana::pair<double, long> p3;
+    p2 = std::move(p1);
+    p3 = std::move(p2);
+    return p3;
+}
+
+int main() {
+    // from pair<T, U> to pair<T, U>
+    {
+        hana::pair<MoveOnly, short> p1(MoveOnly{3}, 4);
+        hana::pair<MoveOnly, short> p2;
+        p2 = std::move(p1);
+        BOOST_HANA_RUNTIME_CHECK(hana::first(p2) == MoveOnly{3});
+        BOOST_HANA_RUNTIME_CHECK(hana::second(p2) == 4);
+    }
+
+    // from pair<T, U> to pair<V, W>
+    {
+        hana::pair<MoveOnlyDerived, short> p1(MoveOnlyDerived{3}, 4);
+        hana::pair<MoveOnly, long> p2;
+        p2 = std::move(p1);
+        BOOST_HANA_RUNTIME_CHECK(hana::first(p2) == MoveOnly{3});
+        BOOST_HANA_RUNTIME_CHECK(hana::second(p2) == 4);
+    }
+
+    // make sure that also works in a constexpr context
+    // (test fails under GCC <= 6 due to buggy constexpr)
+#if BOOST_HANA_CONFIG_GCC >= BOOST_HANA_CONFIG_VERSION(7, 0, 0)
+    {
+        constexpr auto p = in_constexpr_context(3, 4);
+        static_assert(hana::first(p) == 3, "");
+        static_assert(hana::second(p) == 4, "");
+    }
+#endif
+}