1 files changed, 130 insertions, 0 deletions
diff --git a/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_piecewise_pair.pass.cpp b/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_piecewise_pair.pass.cpp
new file mode 100644
index 000000000000..d0d76503da50
--- /dev/null
+++ b/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_piecewise_pair.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: c++experimental
+// UNSUPPORTED: c++98, c++03
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class U1, class U2, class ...Args1, class ...Args2>
+// void polymorphic_allocator<T>::construct(pair<U1, U2>*, piecewise_construct_t
+//                                          tuple<Args1...>, tuple<Args2...>)
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <utility>
+#include <tuple>
+#include <cassert>
+#include <cstdlib>
+#include "uses_alloc_types.hpp"
+#include "test_allocator.h"
+
+namespace ex = std::experimental::pmr;
+
+template <class T, class U, class ...TTuple, class ...UTuple>
+bool doTest(UsesAllocatorType TExpect, UsesAllocatorType UExpect,
+            std::tuple<TTuple...> ttuple, std::tuple<UTuple...> utuple)
+{
+    using P = std::pair<T, U>;
+    TestResource R;
+    ex::memory_resource * M = &R;
+    ex::polymorphic_allocator<P> A(M);
+    P * ptr = A.allocate(1);
+
+    // UNDER TEST //
+    A.construct(ptr, std::piecewise_construct, std::move(ttuple), std::move(utuple));
+    // ------- //
+    bool tres = checkConstruct<TTuple&&...>(ptr->first, TExpect, M);
+    bool ures = checkConstruct<UTuple&&...>(ptr->second, UExpect, M);
+
+    A.destroy(ptr);
+    A.deallocate(ptr, 1);
+    return tres && ures;
+}
+
+template <class Alloc, class ...TTypes, class ...UTypes>
+void test_pmr_uses_allocator(std::tuple<TTypes...> ttuple, std::tuple<UTypes...> utuple)
+{
+    {
+        using T = NotUsesAllocator<Alloc, sizeof...(TTypes)>;
+        using U = NotUsesAllocator<Alloc, sizeof...(UTypes)>;
+        assert((doTest<T, U>(UA_None, UA_None,
+                             std::move(ttuple), std::move(utuple))));
+    }
+    {
+        using T = UsesAllocatorV1<Alloc, sizeof...(TTypes)>;
+        using U = UsesAllocatorV2<Alloc, sizeof...(UTypes)>;
+        assert((doTest<T, U>(UA_AllocArg, UA_AllocLast,
+                             std::move(ttuple), std::move(utuple))));
+    }
+    {
+        using T = UsesAllocatorV2<Alloc, sizeof...(TTypes)>;
+        using U = UsesAllocatorV3<Alloc, sizeof...(UTypes)>;
+        assert((doTest<T, U>(UA_AllocLast, UA_AllocArg,
+                             std::move(ttuple), std::move(utuple))));
+    }
+    {
+        using T = UsesAllocatorV3<Alloc, sizeof...(TTypes)>;
+        using U = NotUsesAllocator<Alloc, sizeof...(UTypes)>;
+        assert((doTest<T, U>(UA_AllocArg, UA_None,
+                             std::move(ttuple), std::move(utuple))));
+    }
+}
+
+int main()
+{
+    using ERT = std::experimental::erased_type;
+    using PMR = ex::memory_resource*;
+    using PMA = ex::polymorphic_allocator<char>;
+    {
+        std::tuple<> t1;
+        test_pmr_uses_allocator<ERT>(t1, t1);
+        test_pmr_uses_allocator<PMR>(t1, t1);
+        test_pmr_uses_allocator<PMA>(t1, t1);
+    }
+    {
+        std::tuple<int> t1(42);
+        std::tuple<> t2;
+        test_pmr_uses_allocator<ERT>(t1, t2);
+        test_pmr_uses_allocator<ERT>(t2, t1);
+        test_pmr_uses_allocator<PMR>(t1, t2);
+        test_pmr_uses_allocator<PMR>(t2, t1);
+        test_pmr_uses_allocator<PMA>(t1, t2);
+        test_pmr_uses_allocator<PMA>(t2, t1);
+    }
+    {
+        std::tuple<int> t1(42);
+        int x = 55;
+        double dx = 42.42;
+        std::tuple<int&, double&&> t2(x, std::move(dx));
+        test_pmr_uses_allocator<ERT>(           t1, std::move(t2));
+        test_pmr_uses_allocator<ERT>(std::move(t2),            t1);
+        test_pmr_uses_allocator<PMR>(           t1, std::move(t2));
+        test_pmr_uses_allocator<PMR>(std::move(t2),            t1);
+        test_pmr_uses_allocator<PMA>(           t1, std::move(t2));
+        test_pmr_uses_allocator<PMA>(std::move(t2),            t1);
+    }
+    {
+        void* xptr = nullptr;
+        long y = 4242;
+        std::tuple<int, long const&, void*&> t1(42, y, xptr);
+        int x = 55;
+        double dx = 42.42;
+        const char* s = "hello World";
+        std::tuple<int&, double&&, const char*> t2(x, std::move(dx), s);
+        test_pmr_uses_allocator<ERT>(           t1, std::move(t2));
+        test_pmr_uses_allocator<ERT>(std::move(t2),            t1);
+        test_pmr_uses_allocator<PMR>(           t1, std::move(t2));
+        test_pmr_uses_allocator<PMR>(std::move(t2),            t1);
+        test_pmr_uses_allocator<PMA>(           t1, std::move(t2));
+        test_pmr_uses_allocator<PMA>(std::move(t2),            t1);
+    }
+}