1 files changed, 59 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/concept/struct/fold_right.cpp b/src/boost/libs/hana/test/concept/struct/fold_right.cpp
new file mode 100644
index 000000000..3db67def9
--- /dev/null
+++ b/src/boost/libs/hana/test/concept/struct/fold_right.cpp
@@ -0,0 +1,59 @@
+// 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/concept/struct.hpp>
+#include <boost/hana/equal.hpp>
+#include <boost/hana/fold_right.hpp>
+#include <boost/hana/integral_constant.hpp>
+
+#include "minimal_struct.hpp"
+#include <laws/base.hpp>
+#include <support/minimal_product.hpp>
+namespace hana = boost::hana;
+using hana::test::ct_eq;
+
+
+template <int i = 0>
+struct undefined { };
+
+struct MoveOnly {
+    MoveOnly()                           = default;
+    MoveOnly(MoveOnly&&)                 = default;
+    MoveOnly(MoveOnly const&)            = delete;
+    MoveOnly& operator=(MoveOnly&&)      = default;
+    MoveOnly& operator=(MoveOnly const&) = delete;
+};
+
+int main() {
+    constexpr auto pair = ::minimal_product;
+    ct_eq<999> s{};
+    hana::test::_injection<0> f{};
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        hana::fold_right(obj(), s, undefined<>{}),
+        s
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        hana::fold_right(obj(ct_eq<0>{}), s, f),
+        f(pair(hana::int_c<0>, ct_eq<0>{}), s)
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        hana::fold_right(obj(ct_eq<0>{}, ct_eq<1>{}), s, f),
+        f(pair(hana::int_c<0>, ct_eq<0>{}), f(pair(hana::int_c<1>, ct_eq<1>{}), s))
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        hana::fold_right(obj(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}), s, f),
+        f(pair(hana::int_c<0>, ct_eq<0>{}),
+            f(pair(hana::int_c<1>, ct_eq<1>{}),
+                f(pair(hana::int_c<2>, ct_eq<2>{}), s)))
+    ));
+
+    // fold_right with move-only members
+    hana::fold_right(obj(MoveOnly{}), 0, [](auto, int) { return 0; });
+    hana::fold_right(obj(MoveOnly{}, MoveOnly{}), 0, [](auto, int) { return 0; });
+}