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- // Copyright (C) 2008-2018 Lorenzo Caminiti
- // Distributed under the Boost Software License, Version 1.0 (see accompanying
- // file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt).
- // See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html
- // Test constructor subcontracting.
- #include "../detail/oteststream.hpp"
- #include "../detail/counter.hpp"
- #include <boost/contract/constructor.hpp>
- #include <boost/contract/base_types.hpp>
- #include <boost/contract/assert.hpp>
- #include <boost/contract/old.hpp>
- #include <boost/contract/check.hpp>
- #include <boost/bind.hpp>
- #include <boost/ref.hpp>
- #include <boost/detail/lightweight_test.hpp>
- #include <sstream>
- boost::contract::test::detail::oteststream out;
- template<char Id>
- struct t
- #define BASES private boost::contract::constructor_precondition<t<Id> >
- : BASES
- {
- typedef BOOST_CONTRACT_BASE_TYPES(BASES) base_types;
- #undef BASES
- static void static_invariant() {
- out << Id << "::static_inv" << std::endl;
- BOOST_CONTRACT_ASSERT(l.value >= 0);
- }
-
- void invariant() const {
- out << Id << "::inv" << std::endl;
- BOOST_CONTRACT_ASSERT(k_ < 0);
- }
- struct l_tag;
- typedef boost::contract::test::detail::counter<l_tag, int> l_type;
- static l_type l;
- struct z_tag;
- typedef boost::contract::test::detail::counter<z_tag, int> z_type;
- explicit t(z_type& z) :
- boost::contract::constructor_precondition<t<Id> >([&] {
- out << Id << "::ctor::pre" << std::endl;
- BOOST_CONTRACT_ASSERT(z.value < 0);
- })
- {
- boost::contract::old_ptr<z_type> old_z;
- boost::contract::old_ptr<l_type> old_l =
- BOOST_CONTRACT_OLDOF(l_type::eval(l));
- boost::contract::check c = boost::contract::constructor(this)
- .old([&] {
- out << Id << "::ctor::old" << std::endl;
- old_z = BOOST_CONTRACT_OLDOF(z_type::eval(z));
- })
- .postcondition([&] {
- out << Id << "::ctor::post" << std::endl;
- BOOST_CONTRACT_ASSERT(k_ == old_z->value);
- BOOST_CONTRACT_ASSERT(z.value == l.value);
- BOOST_CONTRACT_ASSERT(l.value == old_l->value + 1);
- })
- ;
- out << Id << "::ctor::body" << std::endl;
- k_ = z.value;
- z.value = ++l.value;
- }
- virtual ~t() { --l.value; }
- private:
- int k_;
- };
- template<char Id> typename t<Id>::l_type t<Id>::l;
- // Test deep inheritance (2 vertical levels), multiple inheritance (4
- // horizontal levels), and that all public/protected/private part of
- // subcontracting for constructors (not just public, because all access levels
- // are part of C++ object construction mechanism).
- struct c
- #define BASES private boost::contract::constructor_precondition<c>, \
- public t<'d'>, protected t<'p'>, private t<'q'>, public t<'e'>
- : BASES
- {
- typedef BOOST_CONTRACT_BASE_TYPES(BASES) base_types;
- #undef BASES
- static void static_invariant() {
- out << "c::static_inv" << std::endl;
- BOOST_CONTRACT_ASSERT(m.value >= 0);
- }
-
- void invariant() const {
- out << "c::inv" << std::endl;
- BOOST_CONTRACT_ASSERT(j_ < 0);
- }
-
- struct m_tag;
- typedef boost::contract::test::detail::counter<m_tag, int> m_type;
- static m_type m;
- struct y_tag;
- typedef boost::contract::test::detail::counter<y_tag, int> y_type;
- explicit c(y_type& y, t<'d'>::z_type& dz, t<'p'>::z_type& pz,
- t<'q'>::z_type& qz, t<'e'>::z_type& ez) :
- boost::contract::constructor_precondition<c>([&] {
- out << "c::ctor::pre" << std::endl;
- BOOST_CONTRACT_ASSERT(y.value < 0);
- }),
- t<'d'>(dz), t<'p'>(pz), t<'q'>(qz), t<'e'>(ez)
- {
- boost::contract::old_ptr<y_type> old_y =
- BOOST_CONTRACT_OLDOF(y_type::eval(y));
- boost::contract::old_ptr<m_type> old_m;
- boost::contract::check c = boost::contract::constructor(this)
- .old([&] {
- out << "c::ctor::old" << std::endl;
- old_m = BOOST_CONTRACT_OLDOF(m_type::eval(m));
- })
- .postcondition([&] {
- out << "c::ctor::post" << std::endl;
- BOOST_CONTRACT_ASSERT(j_ == old_y->value);
- BOOST_CONTRACT_ASSERT(y.value == m.value);
- BOOST_CONTRACT_ASSERT(m.value == old_m->value + 1);
- })
- ;
- out << "c::ctor::body" << std::endl;
- j_ = y.value;
- y.value = ++m.value;
- }
- virtual ~c() { --m.value; }
- private:
- int j_;
- };
- c::m_type c::m;
- // Test not (fully) contracted base is not part of constructor subcontracting.
- struct b
- #define BASES private boost::contract::constructor_precondition<b>
- : BASES
- {
- typedef BOOST_CONTRACT_BASE_TYPES(BASES) base_types;
- #undef BASES
- static void static_invariant() { out << "b::static_inv" << std::endl; }
- void invariant() const { out << "b::inv" << std::endl; }
- explicit b() {} // No contract.
- virtual ~b() {}
- };
- // Test constructor with both non-contracted and contracted bases.
- struct a
- #define BASES private boost::contract::constructor_precondition<a>, \
- public b, public c
- : BASES
- {
- typedef BOOST_CONTRACT_BASE_TYPES(BASES) base_types;
- #undef BASES
- static void static_invariant() {
- out << "a::static_inv" << std::endl;
- BOOST_CONTRACT_ASSERT(n.value >= 0);
- }
-
- void invariant() const {
- out << "a::inv" << std::endl;
- BOOST_CONTRACT_ASSERT(i_ < 0);
- }
-
- struct n_tag;
- typedef boost::contract::test::detail::counter<n_tag, int> n_type;
- static n_type n;
- struct x_tag;
- typedef boost::contract::test::detail::counter<x_tag, int> x_type;
- explicit a(x_type& x, c::y_type& y, t<'d'>::z_type& dz,
- t<'p'>::z_type& pz, t<'q'>::z_type& qz, t<'e'>::z_type& ez) :
- boost::contract::constructor_precondition<a>([&] {
- out << "a::ctor::pre" << std::endl;
- BOOST_CONTRACT_ASSERT(x.value < 0);
- }),
- b(), c(y, dz, pz, qz, ez)
- {
- boost::contract::old_ptr<x_type> old_x;
- boost::contract::old_ptr<n_type> old_n =
- BOOST_CONTRACT_OLDOF(n_type::eval(n));
- boost::contract::check c = boost::contract::constructor(this)
- .old([&] {
- out << "a::ctor::old" << std::endl;
- old_x = BOOST_CONTRACT_OLDOF(x_type::eval(x));
- })
- .postcondition([&] {
- out << "a::ctor::post" << std::endl;
- BOOST_CONTRACT_ASSERT(i_ == old_x->value);
- BOOST_CONTRACT_ASSERT(x.value == n.value);
- BOOST_CONTRACT_ASSERT(n.value == old_n->value + 1);
- })
- ;
- out << "a::ctor::body" << std::endl;
- i_ = x.value;
- x.value = ++n.value;
- }
- virtual ~a() { --n.value; }
- private:
- int i_;
- };
- a::n_type a::n;
- int main() {
- std::ostringstream ok;
- {
- t<'e'>::z_type ez; ez.value = -5;
- t<'q'>::z_type qz; qz.value = -5;
- t<'p'>::z_type pz; pz.value = -4;
- t<'d'>::z_type dz; dz.value = -3;
- c::y_type y; y.value = -2;
- a::x_type x; x.value = -1;
- out.str("");
- a aa(x, y, dz, pz, qz, ez);
- ok.str(""); ok
- // Test all constructor pre checked first.
- #ifndef BOOST_CONTRACT_NO_PRECONDITIONS
- << "a::ctor::pre" << std::endl
- << "c::ctor::pre" << std::endl
- #endif
- // Test static inv, but not const inv, checked before ctor body.
- #ifndef BOOST_CONTRACT_NO_PRECONDITIONS
- << "d::ctor::pre" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_ENTRY_INVARIANTS
- << "d::static_inv" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_OLDS
- << "d::ctor::old" << std::endl
- #endif
- << "d::ctor::body" << std::endl
- #ifndef BOOST_CONTRACT_NO_EXIT_INVARIANTS
- << "d::static_inv" << std::endl
- << "d::inv" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_POSTCONDITIONS
- << "d::ctor::post" << std::endl
- #endif
-
- // Test check also protected bases (because part of C++ constr.).
- #ifndef BOOST_CONTRACT_NO_PRECONDITIONS
- << "p::ctor::pre" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_ENTRY_INVARIANTS
- << "p::static_inv" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_OLDS
- << "p::ctor::old" << std::endl
- #endif
- << "p::ctor::body" << std::endl
- #ifndef BOOST_CONTRACT_NO_EXIT_INVARIANTS
- << "p::static_inv" << std::endl
- << "p::inv" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_POSTCONDITIONS
- << "p::ctor::post" << std::endl
- #endif
-
- // Test check also private bases (because part of C++ constr.).
- #ifndef BOOST_CONTRACT_NO_PRECONDITIONS
- << "q::ctor::pre" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_ENTRY_INVARIANTS
- << "q::static_inv" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_OLDS
- << "q::ctor::old" << std::endl
- #endif
- << "q::ctor::body" << std::endl
- #ifndef BOOST_CONTRACT_NO_EXIT_INVARIANTS
- << "q::static_inv" << std::endl
- << "q::inv" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_POSTCONDITIONS
- << "q::ctor::post" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_PRECONDITIONS
- << "e::ctor::pre" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_ENTRY_INVARIANTS
- << "e::static_inv" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_OLDS
- << "e::ctor::old" << std::endl
- #endif
- << "e::ctor::body" << std::endl
- #ifndef BOOST_CONTRACT_NO_EXIT_INVARIANTS
- << "e::static_inv" << std::endl
- << "e::inv" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_POSTCONDITIONS
- << "e::ctor::post" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_ENTRY_INVARIANTS
- << "c::static_inv" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_OLDS
- << "c::ctor::old" << std::endl
- #endif
- << "c::ctor::body" << std::endl
- #ifndef BOOST_CONTRACT_NO_EXIT_INVARIANTS
- << "c::static_inv" << std::endl
- << "c::inv" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_POSTCONDITIONS
- << "c::ctor::post" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_ENTRY_INVARIANTS
- << "a::static_inv" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_OLDS
- << "a::ctor::old" << std::endl
- #endif
- << "a::ctor::body" << std::endl
- #ifndef BOOST_CONTRACT_NO_EXIT_INVARIANTS
- << "a::static_inv" << std::endl
- << "a::inv" << std::endl
- #endif
- #ifndef BOOST_CONTRACT_NO_POSTCONDITIONS
- << "a::ctor::post" << std::endl
- #endif
- ;
- BOOST_TEST(out.eq(ok.str()));
- }
- #ifndef BOOST_CONTRACT_NO_OLDS
- #define BOOST_CONTRACT_TEST_old 1u
- #else
- #define BOOST_CONTRACT_TEST_old 0u
- #endif
- std::clog << a::x_type::copies() << std::endl;
- std::clog << BOOST_CONTRACT_TEST_old << std::endl;
- BOOST_TEST_EQ(a::x_type::copies(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(a::x_type::evals(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(a::x_type::ctors(), a::x_type::dtors()); // No leak.
-
- BOOST_TEST_EQ(c::y_type::copies(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(c::y_type::evals(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(c::y_type::ctors(), c::y_type::dtors()); // No leak.
-
- BOOST_TEST_EQ(t<'d'>::z_type::copies(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(t<'d'>::z_type::evals(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(t<'d'>::z_type::ctors(), t<'d'>::z_type::dtors()); // No leak.
-
- BOOST_TEST_EQ(t<'p'>::z_type::copies(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(t<'p'>::z_type::evals(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(t<'p'>::z_type::ctors(), t<'p'>::z_type::dtors()); // No leak.
-
- BOOST_TEST_EQ(t<'q'>::z_type::copies(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(t<'q'>::z_type::evals(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(t<'q'>::z_type::ctors(), t<'q'>::z_type::dtors()); // No leak.
- BOOST_TEST_EQ(t<'e'>::z_type::copies(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(t<'e'>::z_type::evals(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(t<'e'>::z_type::ctors(), t<'e'>::z_type::dtors()); // No leak.
- // Following destroy only copies (actual objects are static data members).
- BOOST_TEST_EQ(a::n_type::copies(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(a::n_type::evals(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(a::n_type::copies(), a::n_type::dtors()); // No leak.
-
- BOOST_TEST_EQ(c::m_type::copies(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(c::m_type::evals(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(c::m_type::copies(), c::m_type::dtors()); // No leak.
-
- BOOST_TEST_EQ(t<'d'>::l_type::copies(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(t<'d'>::l_type::evals(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(t<'e'>::l_type::copies(), t<'e'>::l_type::dtors()); // No leak
-
- BOOST_TEST_EQ(t<'p'>::l_type::copies(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(t<'p'>::l_type::evals(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(t<'e'>::l_type::copies(), t<'e'>::l_type::dtors()); // No leak
-
- BOOST_TEST_EQ(t<'q'>::l_type::copies(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(t<'q'>::l_type::evals(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(t<'e'>::l_type::copies(), t<'e'>::l_type::dtors()); // No leak
-
- BOOST_TEST_EQ(t<'e'>::l_type::copies(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(t<'e'>::l_type::evals(), BOOST_CONTRACT_TEST_old);
- BOOST_TEST_EQ(t<'e'>::l_type::copies(), t<'e'>::l_type::dtors()); // No leak
- #undef BOOST_CONTRACT_TEST_old
- return boost::report_errors();
- }
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