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121 lines
3.6 KiB
C++
121 lines
3.6 KiB
C++
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// Test destructor body throwing (in middle branch of inheritance tree).
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#include "../aux_/oteststream.hpp"
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#include <boost/contract/destructor.hpp>
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#include <boost/contract/base_types.hpp>
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#include <boost/contract/guard.hpp>
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#include <boost/config.hpp>
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#include <boost/detail/lightweight_test.hpp>
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#include <exception>
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#include <cstdlib>
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#include <sstream>
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boost::contract::aux::test::oteststream out;
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struct c {
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static void static_invariant() { out << "c::static_inv" << std::endl; }
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void invariant() const { out << "c::inv" << std::endl; }
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~c() {
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boost::contract::guard c = boost::contract::destructor(this)
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.old([&] { out << "c::dtor::old" << std::endl; })
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.postcondition([] { out << "c::dtor::post" << std::endl; })
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;
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out << "c::dtor::body" << std::endl;
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// Do not throw (from inheritance root).
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}
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};
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struct b
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#define BASES public c
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: BASES
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{
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typedef BOOST_CONTRACT_BASE_TYPES(BASES) base_types;
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#undef BASES
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static void static_invariant() { out << "b::static_inv" << std::endl; }
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void invariant() const { out << "b::inv" << std::endl; }
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struct e {};
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~b() {
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boost::contract::guard c = boost::contract::destructor(this)
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.old([&] { out << "b::dtor::old" << std::endl; })
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.postcondition([] { out << "b::dtor::post" << std::endl; })
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;
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out << "b::dtor::body" << std::endl;
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throw b::e(); // Test body throw (from inheritance mid branch).
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}
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};
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struct a
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#define BASES public b
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: BASES
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{
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typedef BOOST_CONTRACT_BASE_TYPES(BASES) base_types;
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#undef BASES
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static void static_invariant() { out << "a::static_inv" << std::endl; }
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void invariant() const { out << "a::inv" << std::endl; }
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~a() {
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boost::contract::guard c = boost::contract::destructor(this)
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.old([&] { out << "a::dtor::old" << std::endl; })
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.postcondition([] { out << "a::dtor::post" << std::endl; })
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;
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out << "a::dtor::body" << std::endl;
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// Do not throw (from inheritance leaf).
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}
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};
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void t() {
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std::ostringstream ok;
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ok.str(""); ok
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<< "a::static_inv" << std::endl
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<< "a::inv" << std::endl
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<< "a::dtor::old" << std::endl
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<< "a::dtor::body" << std::endl
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<< "a::static_inv" << std::endl
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// Test a destructed (so only static_inv and post).
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<< "a::dtor::post" << std::endl
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<< "b::static_inv" << std::endl
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<< "b::inv" << std::endl
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<< "b::dtor::old" << std::endl
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<< "b::dtor::body" << std::endl
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// TODO: Document this (even if dtors should never throw in C++ anyways...).
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// Unfortunately, only Clang gets this right... Both MSVC and GCC seem to stop
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// everything as soon as the destructor throws an exception...
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#ifdef BOOST_CLANG
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// Test b not destructed (so both static_inv and inv, but no post).
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<< "b::static_inv" << std::endl
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<< "b::inv" << std::endl
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<< "c::static_inv" << std::endl
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<< "c::inv" << std::endl
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<< "c::dtor::old" << std::endl
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<< "c::dtor::body" << std::endl
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// Test c not destructed (so both static_inv and inv, but no post).
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<< "c::static_inv" << std::endl
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<< "c::inv" << std::endl
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#endif // BOOST_CLANG
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;
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BOOST_TEST(out.eq(ok.str()));
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std::exit(boost::report_errors());
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}
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int main() {
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std::set_terminate(&t); // Must use terminate to handle dtor throw.
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{
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out.str("");
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a aa;
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} // Call destructor (which calls t on throw).
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BOOST_TEST(false); // Must not exit from here, but from t.
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return boost::report_errors();
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}
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