1 files changed, 44 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/ext/std/integer_sequence/drop_front_exactly.cpp b/src/boost/libs/hana/test/ext/std/integer_sequence/drop_front_exactly.cpp
new file mode 100644
index 000000000..a9556ccb7
--- /dev/null
+++ b/src/boost/libs/hana/test/ext/std/integer_sequence/drop_front_exactly.cpp
@@ -0,0 +1,44 @@
+// 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/drop_front_exactly.hpp>
+#include <boost/hana/equal.hpp>
+#include <boost/hana/ext/std/integer_sequence.hpp>
+#include <boost/hana/integral_constant.hpp>
+
+#include <utility>
+namespace hana = boost::hana;
+
+
+int main() {
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        hana::drop_front_exactly(std::index_sequence<0>{}),
+        std::index_sequence<>{}
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        hana::drop_front_exactly(std::index_sequence<0, 1>{}),
+        std::index_sequence<1>{}
+    ));
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        hana::drop_front_exactly(std::index_sequence<0, 1, 2>{}),
+        std::index_sequence<1, 2>{}
+    ));
+
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        hana::drop_front_exactly(std::index_sequence<0, 1, 2>{}, hana::size_c<2>),
+        std::index_sequence<2>{}
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        hana::drop_front_exactly(std::index_sequence<0, 1, 2, 3>{}, hana::size_c<2>),
+        std::index_sequence<2, 3>{}
+    ));
+
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        hana::drop_front_exactly(std::index_sequence<0, 1, 2, 3>{}, hana::size_c<3>),
+        std::index_sequence<3>{}
+    ));
+}