1 files changed, 155 insertions, 0 deletions
diff --git a/test/std/utilities/optional/optional.object/optional.object.ctor/copy.pass.cpp b/test/std/utilities/optional/optional.object/optional.object.ctor/copy.pass.cpp
new file mode 100644
index 000000000000..5906d4edd119
--- /dev/null
+++ b/test/std/utilities/optional/optional.object/optional.object.ctor/copy.pass.cpp
@@ -0,0 +1,155 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11, c++14
+// <optional>
+
+// optional(const optional<T>& rhs);
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "archetypes.hpp"
+
+using std::optional;
+
+template <class T, class ...InitArgs>
+void test(InitArgs&&... args)
+{
+    const optional<T> rhs(std::forward<InitArgs>(args)...);
+    bool rhs_engaged = static_cast<bool>(rhs);
+    optional<T> lhs = rhs;
+    assert(static_cast<bool>(lhs) == rhs_engaged);
+    if (rhs_engaged)
+        assert(*lhs == *rhs);
+}
+
+void test_throwing_ctor() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    struct Z {
+      Z() : count(0) {}
+      Z(Z const& o) : count(o.count + 1)
+      { if (count == 2) throw 6; }
+      int count;
+    };
+    const Z z;
+    const optional<Z> rhs(z);
+    try
+    {
+        optional<Z> lhs(rhs);
+        assert(false);
+    }
+    catch (int i)
+    {
+        assert(i == 6);
+    }
+#endif
+}
+
+template <class T, class ...InitArgs>
+void test_ref(InitArgs&&... args)
+{
+    const optional<T> rhs(std::forward<InitArgs>(args)...);
+    bool rhs_engaged = static_cast<bool>(rhs);
+    optional<T> lhs = rhs;
+    assert(static_cast<bool>(lhs) == rhs_engaged);
+    if (rhs_engaged)
+        assert(&(*lhs) == &(*rhs));
+}
+
+
+void test_reference_extension()
+{
+#if defined(_LIBCPP_VERSION) && 0 // FIXME these extensions are currently disabled.
+    using T = TestTypes::TestType;
+    T::reset();
+    {
+        T t;
+        T::reset_constructors();
+        test_ref<T&>();
+        test_ref<T&>(t);
+        assert(T::alive == 1);
+        assert(T::constructed == 0);
+        assert(T::assigned == 0);
+        assert(T::destroyed == 0);
+    }
+    assert(T::destroyed == 1);
+    assert(T::alive == 0);
+    {
+        T t;
+        const T& ct = t;
+        T::reset_constructors();
+        test_ref<T const&>();
+        test_ref<T const&>(t);
+        test_ref<T const&>(ct);
+        assert(T::alive == 1);
+        assert(T::constructed == 0);
+        assert(T::assigned == 0);
+        assert(T::destroyed == 0);
+    }
+    assert(T::alive == 0);
+    assert(T::destroyed == 1);
+    {
+        static_assert(!std::is_copy_constructible<std::optional<T&&>>::value, "");
+        static_assert(!std::is_copy_constructible<std::optional<T const&&>>::value, "");
+    }
+#endif
+}
+
+int main()
+{
+    test<int>();
+    test<int>(3);
+    {
+        const optional<const int> o(42);
+        optional<const int> o2(o);
+        assert(*o2 == 42);
+    }
+    {
+        using T = TestTypes::TestType;
+        T::reset();
+        const optional<T> rhs;
+        assert(T::alive == 0);
+        const optional<T> lhs(rhs);
+        assert(lhs.has_value() == false);
+        assert(T::alive == 0);
+    }
+    TestTypes::TestType::reset();
+    {
+        using T = TestTypes::TestType;
+        T::reset();
+        const optional<T> rhs(42);
+        assert(T::alive == 1);
+        assert(T::value_constructed == 1);
+        assert(T::copy_constructed == 0);
+        const optional<T> lhs(rhs);
+        assert(lhs.has_value());
+        assert(T::copy_constructed == 1);
+        assert(T::alive == 2);
+    }
+    TestTypes::TestType::reset();
+    {
+        using namespace ConstexprTestTypes;
+        test<TestType>();
+        test<TestType>(42);
+    }
+    {
+        using namespace TrivialTestTypes;
+        test<TestType>();
+        test<TestType>(42);
+    }
+    {
+        test_throwing_ctor();
+    }
+    {
+        test_reference_extension();
+    }
+}