vendor/libc++/libc++-release_370-r246257

1 files changed, 78 insertions, 0 deletions

diff --git a/test/std/utilities/function.objects/refwrap/unary.pass.cpp b/test/std/utilities/function.objects/refwrap/unary.pass.cpp
new file mode 100644
index 0000000000000..528a8f327d966
--- /dev/null
+++ b/test/std/utilities/function.objects/refwrap/unary.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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>
+
+// reference_wrapper
+
+// check for deriving from unary_function
+
+#include <functional>
+#include <type_traits>
+
+class functor1
+    : public std::unary_function<int, char>
+{
+};
+
+class functor2
+    : public std::binary_function<char, int, double>
+{
+};
+
+class functor3
+    : public std::unary_function<int, int>,
+      public std::binary_function<char, int, double>
+{
+public:
+    typedef float result_type;
+};
+
+class functor4
+    : public std::unary_function<int, int>,
+      public std::binary_function<char, int, double>
+{
+public:
+};
+
+struct C
+{
+    typedef int argument_type;
+    typedef int result_type;
+};
+
+int main()
+{
+    static_assert((std::is_base_of<std::unary_function<int, char>,
+                                   std::reference_wrapper<functor1> >::value), "");
+    static_assert((!std::is_base_of<std::unary_function<char, int>,
+                                    std::reference_wrapper<functor2> >::value), "");
+    static_assert((std::is_base_of<std::unary_function<int, int>,
+                                   std::reference_wrapper<functor3> >::value), "");
+    static_assert((std::is_base_of<std::unary_function<int, int>,
+                                   std::reference_wrapper<functor4> >::value), "");
+    static_assert((!std::is_base_of<std::unary_function<int, int>,
+                                    std::reference_wrapper<C> >::value), "");
+    static_assert((!std::is_base_of<std::unary_function<int, float>,
+                                    std::reference_wrapper<float(*)()> >::value), "");
+    static_assert((std::is_base_of<std::unary_function<int, float>,
+                                   std::reference_wrapper<float (int)> >::value), "");
+    static_assert((!std::is_base_of<std::unary_function<int, float>,
+                                    std::reference_wrapper<float (int, int)> >::value), "");
+    static_assert((std::is_base_of<std::unary_function<int, float>,
+                                   std::reference_wrapper<float(*)(int)> >::value), "");
+    static_assert((!std::is_base_of<std::unary_function<int, float>,
+                                    std::reference_wrapper<float(*)(int, int)> >::value), "");
+    static_assert((std::is_base_of<std::unary_function<C*, float>,
+                                   std::reference_wrapper<float(C::*)()> >::value), "");
+    static_assert((std::is_base_of<std::unary_function<const volatile C*, float>,
+                                   std::reference_wrapper<float(C::*)() const volatile> >::value), "");
+    static_assert((!std::is_base_of<std::unary_function<C*, float>,
+                                   std::reference_wrapper<float(C::*)(int)> >::value), "");
+}