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libs/smart_ptr/test/pointer_to_other_test.cpp

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+//
+//  pointer_to_other_test.cpp - a test for boost/pointer_to_other.hpp
+//
+//  Copyright (c) 2005 Peter Dimov
+//
+// Distributed under 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)
+//
+
+#include <boost/pointer_to_other.hpp>
+
+#include <boost/shared_ptr.hpp>
+#include <boost/shared_array.hpp>
+#include <boost/scoped_ptr.hpp>
+#include <boost/scoped_array.hpp>
+#include <boost/intrusive_ptr.hpp>
+
+#include <memory>
+
+template<class T, class U> void assert_same_type( T** pt = 0, U** pu = 0 )
+{
+    pt = pu;
+}
+
+struct X;
+struct Y;
+
+int main()
+{
+    // shared_ptr
+
+    assert_same_type< boost::pointer_to_other< boost::shared_ptr<X>, Y >::type, boost::shared_ptr<Y> >();
+    assert_same_type< boost::pointer_to_other< boost::shared_ptr<X>, void >::type, boost::shared_ptr<void> >();
+    assert_same_type< boost::pointer_to_other< boost::shared_ptr<void>, Y >::type, boost::shared_ptr<Y> >();
+
+    // shared_array
+
+    assert_same_type< boost::pointer_to_other< boost::shared_array<X>, Y >::type, boost::shared_array<Y> >();
+    assert_same_type< boost::pointer_to_other< boost::shared_array<X>, void >::type, boost::shared_array<void> >();
+    assert_same_type< boost::pointer_to_other< boost::shared_array<void>, Y >::type, boost::shared_array<Y> >();
+
+    // scoped_ptr
+
+    assert_same_type< boost::pointer_to_other< boost::scoped_ptr<X>, Y >::type, boost::scoped_ptr<Y> >();
+    assert_same_type< boost::pointer_to_other< boost::scoped_ptr<X>, void >::type, boost::scoped_ptr<void> >();
+    assert_same_type< boost::pointer_to_other< boost::scoped_ptr<void>, Y >::type, boost::scoped_ptr<Y> >();
+
+    // scoped_array
+
+    assert_same_type< boost::pointer_to_other< boost::scoped_array<X>, Y >::type, boost::scoped_array<Y> >();
+    assert_same_type< boost::pointer_to_other< boost::scoped_array<X>, void >::type, boost::scoped_array<void> >();
+    assert_same_type< boost::pointer_to_other< boost::scoped_array<void>, Y >::type, boost::scoped_array<Y> >();
+
+    // intrusive_ptr
+
+    assert_same_type< boost::pointer_to_other< boost::intrusive_ptr<X>, Y >::type, boost::intrusive_ptr<Y> >();
+    assert_same_type< boost::pointer_to_other< boost::intrusive_ptr<X>, void >::type, boost::intrusive_ptr<void> >();
+    assert_same_type< boost::pointer_to_other< boost::intrusive_ptr<void>, Y >::type, boost::intrusive_ptr<Y> >();
+
+    // auto_ptr
+
+    assert_same_type< boost::pointer_to_other< std::auto_ptr<X>, Y >::type, std::auto_ptr<Y> >();
+    assert_same_type< boost::pointer_to_other< std::auto_ptr<X>, void >::type, std::auto_ptr<void> >();
+    assert_same_type< boost::pointer_to_other< std::auto_ptr<void>, Y >::type, std::auto_ptr<Y> >();
+
+    // raw pointer
+   
+    assert_same_type< boost::pointer_to_other< X *, Y >::type, Y * >();
+    assert_same_type< boost::pointer_to_other< X *, void >::type, void * >();
+    assert_same_type< boost::pointer_to_other< void *, Y >::type, Y * >();
+
+    return 0;
+}