1 files changed, 78 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/detail/variadic/drop_into.cpp b/src/boost/libs/hana/test/detail/variadic/drop_into.cpp
new file mode 100644
index 000000000..8c4aecb5d
--- /dev/null
+++ b/src/boost/libs/hana/test/detail/variadic/drop_into.cpp
@@ -0,0 +1,78 @@
+// 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/detail/variadic/drop_into.hpp>
+
+#include <boost/hana/assert.hpp>
+#include <boost/hana/equal.hpp>
+
+#include <laws/base.hpp>
+namespace hana = boost::hana;
+namespace vd = hana::detail::variadic;
+using hana::test::ct_eq;
+
+
+struct non_pod { virtual ~non_pod() { } };
+
+
+int main() {
+    hana::test::_injection<0> f{};
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<0>(f)(),
+        f()
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<0>(f)(ct_eq<0>{}),
+        f(ct_eq<0>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<0>(f)(ct_eq<0>{}, ct_eq<1>{}),
+        f(ct_eq<0>{}, ct_eq<1>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<0>(f)(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}),
+        f(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{})
+    ));
+
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<1>(f)(ct_eq<0>{}),
+        f()
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<1>(f)(ct_eq<0>{}, ct_eq<1>{}),
+        f(ct_eq<1>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<1>(f)(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}),
+        f(ct_eq<1>{}, ct_eq<2>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<1>(f)(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}),
+        f(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{})
+    ));
+
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<2>(f)(ct_eq<0>{}, ct_eq<1>{}),
+        f()
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<2>(f)(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}),
+        f(ct_eq<2>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<2>(f)(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}),
+        f(ct_eq<2>{}, ct_eq<3>{})
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        vd::drop_into<2>(f)(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}),
+        f(ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{})
+    ));
+
+    // make sure we can use non-pods
+    vd::drop_into<1>(f)(ct_eq<0>{}, non_pod{});
+    vd::drop_into<1>(f)(non_pod{}, ct_eq<1>{});
+}