1 files changed, 64 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/functional/demux.cpp b/src/boost/libs/hana/test/functional/demux.cpp
new file mode 100644
index 00000000..07285bce
--- /dev/null
+++ b/src/boost/libs/hana/test/functional/demux.cpp
@@ -0,0 +1,64 @@
+// 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/equal.hpp>
+#include <boost/hana/functional/demux.hpp>
+
+#include <laws/base.hpp>
+namespace hana = boost::hana;
+using hana::test::ct_eq;
+
+
+struct MoveOnly {
+    MoveOnly() = default;
+    MoveOnly(MoveOnly const&) = delete;
+    MoveOnly(MoveOnly&&) = default;
+};
+
+int main() {
+    hana::test::_injection<0> f{};
+    hana::test::_injection<1> g{};
+    hana::test::_injection<2> h{};
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        hana::demux(f)()(),
+        f()
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        hana::demux(f)(g)(ct_eq<1>{}),
+        f(g(ct_eq<1>{}))
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        hana::demux(f)(g)(ct_eq<1>{}, ct_eq<2>{}),
+        f(g(ct_eq<1>{}, ct_eq<2>{}))
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        hana::demux(f)(g)(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}),
+        f(g(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}))
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        hana::demux(f)(g, h)(ct_eq<1>{}),
+        f(g(ct_eq<1>{}), h(ct_eq<1>{}))
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        hana::demux(f)(g, h)(ct_eq<1>{}, ct_eq<2>{}),
+        f(g(ct_eq<1>{}, ct_eq<2>{}), h(ct_eq<1>{}, ct_eq<2>{}))
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        hana::demux(f)(g, h)(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}),
+        f(g(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}), h(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}))
+    ));
+
+    // Make sure we can pass move-only types when a single function
+    // is demux'ed. In other words, make sure the arguments are
+    // perfect-forwarded when a single function is demux'ed.
+    {
+        hana::demux(f)(g)(MoveOnly{});
+        hana::demux(f)(g)(MoveOnly{}, MoveOnly{});
+        hana::demux(f)(g)(MoveOnly{}, MoveOnly{}, MoveOnly{});
+    }
+}