Added limited emplace() for older compilers

2025-07-17 06:12:08 +02:00 · 2014-06-06 23:24:43 +02:00
parent dec71d338d
commit fdc98d17ca
12 changed files with 612 additions and 29 deletions
--- a/test/optional_test_minimum_requirements.cpp
+++ b/test/optional_test_minimum_requirements.cpp
@ -0,0 +1,104 @@
+// Copyright (C) 2014 Andrzej Krzemienski.
+//
+// Use, modification, and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/lib/optional for documentation.
+//
+// You are welcome to contact the author at:
+//  akrzemi1@gmail.com
+//
+// Revisions:
+//
+#include<iostream>
+#include<stdexcept>
+#include<string>
+
+#define BOOST_ENABLE_ASSERT_HANDLER
+
+#include "boost/bind/apply.hpp" // Included just to test proper interaction with boost::apply<> as reported by Daniel Wallin
+#include "boost/mpl/bool.hpp"
+#include "boost/mpl/bool_fwd.hpp"  // For mpl::true_ and mpl::false_
+#include "boost/static_assert.hpp"
+
+#include "boost/optional/optional.hpp"
+
+#ifdef __BORLANDC__
+#pragma hdrstop
+#endif
+
+#include "boost/none.hpp"
+
+#include "boost/test/minimal.hpp"
+
+#include "optional_test_common.cpp"
+
+class NonConstructible
+{
+private:
+    NonConstructible();
+    NonConstructible(NonConstructible const&);
+#if (!defined BOOST_NO_CXX11_RVALUE_REFERENCES)
+    NonConstructible(NonConstructible &&);
+#endif   
+};
+
+void test_non_constructible()
+{
+    optional<NonConstructible> o;
+    BOOST_CHECK(!o);
+    BOOST_CHECK(o == boost::none);
+    try { 
+        o.value();
+        BOOST_CHECK(false);
+    }
+    catch(...) {
+        BOOST_CHECK(true);
+    }
+}
+
+class Guard
+{
+public:
+    explicit Guard(int) {}
+private:
+    Guard();
+    Guard(Guard const&);
+#if (!defined BOOST_NO_CXX11_RVALUE_REFERENCES)
+    Guard(Guard &&);
+#endif   
+};
+
+void test_guard()
+{
+    optional<Guard> o;
+    o.emplace(1);
+    BOOST_CHECK(o);
+}
+
+void test_non_assignable()
+{
+    optional<const std::string> o;
+    o.emplace("cat");
+    BOOST_CHECK(o);
+    BOOST_CHECK(*o == "cat");
+}
+
+int test_main( int, char* [] )
+{
+  try
+  {
+    test_non_constructible();
+    test_guard();
+    test_non_assignable();
+  }
+  catch ( ... )
+  {
+    BOOST_ERROR("Unexpected Exception caught!");
+  }
+
+  return 0;
+}
+
+