1 files changed, 19 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/ext/std/ratio/minus.cpp b/src/boost/libs/hana/test/ext/std/ratio/minus.cpp
new file mode 100644
index 000000000..9a6bc4199
--- /dev/null
+++ b/src/boost/libs/hana/test/ext/std/ratio/minus.cpp
@@ -0,0 +1,19 @@
+// 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/ext/std/ratio.hpp>
+#include <boost/hana/minus.hpp>
+
+#include <ratio>
+namespace hana = boost::hana;
+
+
+int main() {
+    BOOST_HANA_CONSTANT_CHECK(hana::equal(
+        hana::minus(std::ratio<3, 4>{}, std::ratio<5, 10>{}),
+        std::ratio<3*10 - 5*4, 4*10>{}
+    ));
+}