Add shared_from_raw tests.

test/Jamfile.v2

@@ -163,5 +163,10 @@ import testing ;
           [ run make_unique_array_test.cpp ]
           [ run make_unique_array_noinit_test.cpp ]
           [ run make_unique_array_throws_test.cpp ]
+
+          [ run shared_from_raw_test.cpp ]
+          [ run shared_from_raw_test2.cpp ]
+          [ run shared_from_raw_test3.cpp ]
+          [ run shared_from_raw_test4.cpp ]
         ;
 }

test/shared_from_raw_test.cpp

@@ -0,0 +1,170 @@
+//
+//  shared_from_raw_test - based on shared_from_this_test
+//
+//  Copyright (c) 2002, 2003, 2014 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/smart_ptr/enable_shared_from_raw.hpp>
+#include <boost/shared_ptr.hpp>
+
+#include <boost/detail/lightweight_test.hpp>
+
+//
+
+class X
+{
+public:
+
+    virtual void f() = 0;
+
+protected:
+
+    ~X() {}
+};
+
+class Y
+{
+public:
+
+    virtual boost::shared_ptr<X> getX() = 0;
+
+protected:
+
+    ~Y() {}
+};
+
+boost::shared_ptr<Y> createY();
+
+void test()
+{
+    boost::shared_ptr<Y> py = createY();
+    BOOST_TEST(py.get() != 0);
+    BOOST_TEST(py.use_count() == 1);
+
+    try
+    {
+        boost::shared_ptr<X> px = py->getX();
+        BOOST_TEST(px.get() != 0);
+        BOOST_TEST(py.use_count() == 2);
+
+        px->f();
+
+#if !defined( BOOST_NO_RTTI )
+        boost::shared_ptr<Y> py2 = boost::dynamic_pointer_cast<Y>(px);
+        BOOST_TEST(py.get() == py2.get());
+        BOOST_TEST(!(py < py2 || py2 < py));
+        BOOST_TEST(py.use_count() == 3);
+#endif
+    }
+    catch( boost::bad_weak_ptr const& )
+    {
+        BOOST_ERROR( "py->getX() failed" );
+    }
+}
+
+void test2();
+void test3();
+
+int main()
+{
+    test();
+    test2();
+    test3();
+    return boost::report_errors();
+}
+
+// virtual inheritance to stress the implementation
+// (prevents Y* -> impl*, enable_shared_from_raw* -> impl* casts)
+
+class impl: public X, public virtual Y, public virtual boost::enable_shared_from_raw
+{
+public:
+
+    virtual void f()
+    {
+    }
+
+    virtual boost::shared_ptr<X> getX()
+    {
+        boost::shared_ptr<impl> pi = boost::shared_from_raw( this );
+        BOOST_TEST( pi.get() == this );
+        return pi;
+    }
+};
+
+// intermediate impl2 to stress the implementation
+
+class impl2: public impl
+{
+};
+
+boost::shared_ptr<Y> createY()
+{
+    boost::shared_ptr<Y> pi(new impl2);
+    return pi;
+}
+
+void test2()
+{
+    boost::shared_ptr<Y> pi(static_cast<impl2*>(0));
+}
+
+//
+
+struct V: public boost::enable_shared_from_raw
+{
+};
+
+void test3()
+{
+    boost::shared_ptr<V> p( new V );
+
+    try
+    {
+        boost::shared_ptr<V> q = boost::shared_from_raw( p.get() );
+        BOOST_TEST( p == q );
+        BOOST_TEST( !(p < q) && !(q < p) );
+    }
+    catch( boost::bad_weak_ptr const & )
+    {
+        BOOST_ERROR( "shared_from_this( p.get() ) failed" );
+    }
+
+    V v2( *p );
+
+    try
+    {
+        // shared_from_raw differs from shared_from_this;
+        // it will not throw here and will create a shared_ptr
+
+        boost::shared_ptr<V> r = boost::shared_from_raw( &v2 );
+
+        // check if the shared_ptr is correct and that it does
+        // not share ownership with p
+
+        BOOST_TEST( r.get() == &v2 );
+        BOOST_TEST( p != r );
+        BOOST_TEST( (p < r) || (r < p) );
+    }
+    catch( boost::bad_weak_ptr const & )
+    {
+        BOOST_ERROR("shared_from_raw( &v2 ) failed");
+    }
+
+    try
+    {
+        *p = V();
+        boost::shared_ptr<V> r = boost::shared_from_raw( p.get() );
+        BOOST_TEST( p == r );
+        BOOST_TEST( !(p < r) && !(r < p) );
+    }
+    catch( boost::bad_weak_ptr const & )
+    {
+        BOOST_ERROR("shared_from_raw( p.get() ) threw bad_weak_ptr after *p = V()");
+    }
+}

test/shared_from_raw_test2.cpp

@@ -0,0 +1,219 @@
+//
+//  shared_from_raw_test2.cpp - based on esft_regtest.cpp
+//
+//  Copyright (c) 2008, 2014 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/smart_ptr/enable_shared_from_raw.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/weak_ptr.hpp>
+#include <boost/detail/lightweight_test.hpp>
+#include <memory>
+#include <string>
+
+class X: public boost::enable_shared_from_raw
+{
+private:
+
+    int destroyed_;
+    int deleted_;
+    int expected_;
+
+private:
+
+    X( X const& );
+    X& operator=( X const& );
+
+public:
+
+    static int instances;
+
+public:
+
+    explicit X( int expected ): destroyed_( 0 ), deleted_( 0 ), expected_( expected )
+    {
+        ++instances;
+    }
+
+    ~X()
+    {
+        BOOST_TEST( deleted_ == expected_ );
+        BOOST_TEST( destroyed_ == 0 );
+        ++destroyed_;
+        --instances;
+    }
+
+    typedef void (*deleter_type)( X* );
+
+    static void deleter( X * px )
+    {
+        ++px->deleted_;
+    }
+
+    static void deleter2( X * px )
+    {
+        ++px->deleted_;
+        delete px;
+    }
+};
+
+int X::instances = 0;
+
+void test()
+{
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        X x( 0 );
+        BOOST_TEST( X::instances == 1 );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        std::auto_ptr<X> px( new X( 0 ) );
+        BOOST_TEST( X::instances == 1 );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr<X> px( new X( 0 ) );
+        BOOST_TEST( X::instances == 1 );
+
+        boost::weak_ptr<X> wp( px );
+        BOOST_TEST( !wp.expired() );
+
+        px.reset();
+
+        BOOST_TEST( wp.expired() );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        X x( 1 );
+        boost::shared_ptr<X> px( &x, X::deleter );
+        BOOST_TEST( X::instances == 1 );
+
+        X::deleter_type * pd = boost::get_deleter<X::deleter_type>( px );
+        BOOST_TEST( pd != 0 && *pd == X::deleter );
+
+        boost::weak_ptr<X> wp( px );
+        BOOST_TEST( !wp.expired() );
+
+        px.reset();
+
+        BOOST_TEST( wp.expired() );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr<X> px( new X( 1 ), X::deleter2 );
+        BOOST_TEST( X::instances == 1 );
+
+        X::deleter_type * pd = boost::get_deleter<X::deleter_type>( px );
+        BOOST_TEST( pd != 0 && *pd == X::deleter2 );
+
+        boost::weak_ptr<X> wp( px );
+        BOOST_TEST( !wp.expired() );
+
+        px.reset();
+
+        BOOST_TEST( wp.expired() );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+}
+
+struct V: public boost::enable_shared_from_raw
+{
+    virtual ~V() {}
+    std::string m_;
+};
+
+struct V2
+{
+    virtual ~V2() {}
+    std::string m2_;
+};
+
+struct W: V2, V
+{
+};
+
+void test2()
+{
+    boost::shared_ptr<W> p( new W );
+}
+
+void test3()
+{
+    V * p = new W;
+    boost::shared_ptr<void> pv( p );
+    BOOST_TEST( pv.get() == p );
+    BOOST_TEST( pv.use_count() == 1 );
+}
+
+struct null_deleter
+{
+    void operator()( void const* ) const {}
+};
+
+void test4()
+{
+    boost::shared_ptr<V> pv( new V );
+    boost::shared_ptr<V> pv2( pv.get(), null_deleter() );
+    BOOST_TEST( pv2.get() == pv.get() );
+    BOOST_TEST( pv2.use_count() == 1 );
+}
+
+void test5()
+{
+    V v;
+
+    boost::shared_ptr<V> p1( &v, null_deleter() );
+    BOOST_TEST( p1.get() == &v );
+    BOOST_TEST( p1.use_count() == 1 );
+
+    try
+    {
+        boost::shared_from_raw( p1.get() );
+    }
+    catch( ... )
+    {
+        BOOST_ERROR( "shared_from_raw( p1.get() ) failed" );
+    }
+
+    p1.reset();
+
+    boost::shared_ptr<V> p2( &v, null_deleter() );
+    BOOST_TEST( p2.get() == &v );
+    BOOST_TEST( p2.use_count() == 1 );
+
+    try
+    {
+        boost::shared_from_raw( p2.get() );
+    }
+    catch( ... )
+    {
+        BOOST_ERROR( "shared_from_raw( p2.get() ) failed" );
+    }
+}
+
+int main()
+{
+    test();
+    test2();
+    test3();
+    test4();
+    test5();
+
+    return boost::report_errors();
+}

test/shared_from_raw_test3.cpp

@@ -0,0 +1,52 @@
+//
+//  shared_from_raw_test3 - based on esft_second_ptr_test.cpp
+//
+//  This test has been extracted from a real
+//  scenario that occurs in Boost.Python
+//
+//  Copyright 2009, 2014 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/smart_ptr/enable_shared_from_raw.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/detail/lightweight_test.hpp>
+
+//
+
+class X: public boost::enable_shared_from_raw
+{
+};
+
+void null_deleter( void const* )
+{
+}
+
+int main()
+{
+    boost::shared_ptr<X> px( new X );
+
+    {
+        boost::shared_ptr<X> px2( px.get(), null_deleter );
+        BOOST_TEST( px == px2 );
+    }
+
+    try
+    {
+        boost::shared_ptr< X > qx = boost::shared_from_raw( px.get() );
+
+        BOOST_TEST( px == qx );
+        BOOST_TEST( !( px < qx ) && !( qx < px ) );
+    }
+    catch( boost::bad_weak_ptr const& )
+    {
+        BOOST_ERROR( "shared_from_raw( px.get() ) failed" );
+    }
+
+    return boost::report_errors();
+}

test/shared_from_raw_test4.cpp

@@ -0,0 +1,56 @@
+//
+//  shared_from_raw_test4 - based on esft_void_test.cpp
+//
+//  Copyright 2009, 2014 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/smart_ptr/enable_shared_from_raw.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/detail/lightweight_test.hpp>
+
+//
+
+class X: public boost::enable_shared_from_raw
+{
+};
+
+int main()
+{
+    boost::shared_ptr< void const volatile > pv( new X );
+    boost::shared_ptr< void > pv2 = boost::const_pointer_cast< void >( pv );
+    boost::shared_ptr< X > px = boost::static_pointer_cast< X >( pv2 );
+
+    try
+    {
+        boost::shared_ptr< X > qx = boost::shared_from_raw( px.get() );
+
+        BOOST_TEST( px == qx );
+        BOOST_TEST( !( px < qx ) && !( qx < px ) );
+    }
+    catch( boost::bad_weak_ptr const& )
+    {
+        BOOST_ERROR( "shared_from_this( px.get() ) failed" );
+    }
+
+    boost::shared_ptr< X const volatile > px2( px );
+
+    try
+    {
+        boost::shared_ptr< X const volatile > qx2 = boost::shared_from_raw( px2.get() );
+
+        BOOST_TEST( px2 == qx2 );
+        BOOST_TEST( !( px2 < qx2 ) && !( qx2 < px2 ) );
+    }
+    catch( boost::bad_weak_ptr const& )
+    {
+        BOOST_ERROR( "shared_from_this( px2.get() ) failed" );
+    }
+
+    return boost::report_errors();
+}