1 files changed, 148 insertions, 0 deletions
diff --git a/test/std/containers/associative/multimap/multimap.special/swap_noexcept.pass.cpp b/test/std/containers/associative/multimap/multimap.special/swap_noexcept.pass.cpp
new file mode 100644
index 0000000000000..1013c62804b87
--- /dev/null
+++ b/test/std/containers/associative/multimap/multimap.special/swap_noexcept.pass.cpp
@@ -0,0 +1,148 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// void swap(multimap& c)
+//     noexcept(!allocator_type::propagate_on_container_swap::value ||
+//              __is_nothrow_swappable<allocator_type>::value);
+//
+//  In C++17, the standard says that swap shall have:
+//     noexcept(allocator_traits<Allocator>::is_always_equal::value &&
+//              noexcept(swap(declval<Compare&>(), declval<Compare&>())));                 
+
+// This tests a conforming extension
+
+#include <map>
+#include <cassert>
+
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    
+    some_comp() {}
+    some_comp(const some_comp&) {}
+    void deallocate(void*, unsigned) {}
+
+    typedef std::true_type propagate_on_container_swap;
+};
+
+template <class T>
+struct some_comp2
+{
+    typedef T value_type;
+    
+    some_comp2() {}
+    some_comp2(const some_comp2&) {}
+    void deallocate(void*, unsigned) {}
+    typedef std::true_type propagate_on_container_swap;
+};
+
+#if TEST_STD_VER >= 14
+template <typename T>
+void swap(some_comp2<T>&, some_comp2<T>&) noexcept {}
+#endif
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    
+    some_alloc() {}
+    some_alloc(const some_alloc&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::true_type propagate_on_container_swap;
+};
+
+template <class T>
+struct some_alloc2
+{
+    typedef T value_type;
+    
+    some_alloc2() {}
+    some_alloc2(const some_alloc2&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::true_type is_always_equal;
+};
+
+template <class T>
+struct some_alloc3
+{
+    typedef T value_type;
+    
+    some_alloc3() {}
+    some_alloc3(const some_alloc3&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::false_type is_always_equal;
+};
+
+int main()
+{
+#if __has_feature(cxx_noexcept)
+    {
+        typedef std::multimap<MoveOnly, MoveOnly> C;
+        C c1, c2;
+        static_assert(noexcept(swap(c1, c2)), "");
+    }
+    {
+        typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
+        C c1, c2;
+        static_assert(noexcept(swap(c1, c2)), "");
+    }
+    {
+        typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
+        C c1, c2;
+        static_assert(noexcept(swap(c1, c2)), "");
+    }
+    {
+        typedef std::multimap<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
+        C c1, c2;
+        static_assert(!noexcept(swap(c1, c2)), "");
+    }
+
+#if TEST_STD_VER >= 14
+    { // POCS allocator, throwable swap for comp
+    typedef std::multimap<MoveOnly, MoveOnly, some_comp <MoveOnly>, some_alloc <MoveOnly>> C;
+    C c1, c2;
+    static_assert(!noexcept(swap(c1, c2)), "");
+    }
+    { // always equal allocator, throwable swap for comp
+    typedef std::multimap<MoveOnly, MoveOnly, some_comp <MoveOnly>, some_alloc2<MoveOnly>> C;
+    C c1, c2;
+    static_assert(!noexcept(swap(c1, c2)), "");
+    }
+    { // POCS allocator, nothrow swap for comp
+    typedef std::multimap<MoveOnly, MoveOnly, some_comp2<MoveOnly>, some_alloc <MoveOnly>> C;
+    C c1, c2;
+    static_assert( noexcept(swap(c1, c2)), "");
+    }
+    { // always equal allocator, nothrow swap for comp
+    typedef std::multimap<MoveOnly, MoveOnly, some_comp2<MoveOnly>, some_alloc2<MoveOnly>> C;
+    C c1, c2;
+    static_assert( noexcept(swap(c1, c2)), "");
+    }
+
+    { // NOT always equal allocator, nothrow swap for comp
+    typedef std::map<MoveOnly, MoveOnly, some_comp2<MoveOnly>, some_alloc3<MoveOnly>> C;
+    C c1, c2;
+    static_assert( noexcept(swap(c1, c2)), "");
+    }
+#endif
+
+#endif
+}