1 files changed, 39 insertions, 0 deletions
diff --git a/test/std/utilities/function.objects/arithmetic.operations/plus.pass.cpp b/test/std/utilities/function.objects/arithmetic.operations/plus.pass.cpp
new file mode 100644
index 000000000000..3c093fc093c3
--- /dev/null
+++ b/test/std/utilities/function.objects/arithmetic.operations/plus.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// plus
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+int main()
+{
+    typedef std::plus<int> F;
+    const F f = F();
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::result_type>::value), "" );
+    assert(f(3, 2) == 5);
+#if _LIBCPP_STD_VER > 11
+    typedef std::plus<> F2;
+    const F2 f2 = F2();
+    assert(f2(3,2) == 5);
+    assert(f2(3.0, 2) == 5);
+    assert(f2(3, 2.5) == 5.5);
+    
+    constexpr int foo = std::plus<int> () (3, 2);
+    static_assert ( foo == 5, "" );
+
+    constexpr int bar = std::plus<> () (3.0, 2);
+    static_assert ( bar == 5, "" );
+#endif
+}