89 lines
3.0 KiB
C++
89 lines
3.0 KiB
C++
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// Copyright (C) 2008-2018 Lorenzo Caminiti
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// Distributed under the Boost Software License, Version 1.0 (see accompanying
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// file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt).
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// See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html
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// Test overriding function never overrides protected function contract.
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#include "../detail/oteststream.hpp"
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#include <boost/contract/function.hpp>
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#include <boost/contract/public_function.hpp>
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#include <boost/contract/base_types.hpp>
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#include <boost/contract/check.hpp>
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#include <boost/detail/lightweight_test.hpp>
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#include <sstream>
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boost::contract::test::detail::oteststream out;
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struct b {
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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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protected:
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// NOTE: This is the correct way of programming contracts for overridden
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// protected and overriding public functions: Both must use virtual_
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// (otherwise C++ won't override because mismatching parameters), but
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// overridden protected does not use public_function.
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virtual void f(boost::contract::virtual_* /* v */ = 0) {
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boost::contract::check c = boost::contract::function()
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.precondition([] { out << "b::f::pre" << std::endl; })
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.old([] { out << "b::f::old" << std::endl; })
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.postcondition([] { out << "b::f::post" << std::endl; })
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;
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out << "b::f::body" << std::endl;
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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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void f(boost::contract::virtual_* v = 0) /* not override */ {
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// C++ func a::f overrides b::f, but contracts don't (so no override_f).
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boost::contract::check c = boost::contract::public_function(v, this)
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.precondition([] { out << "a::f::pre" << std::endl; })
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.old([] { out << "a::f::old" << std::endl; })
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.postcondition([] { out << "a::f::post" << std::endl; })
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;
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out << "a::f::body" << std::endl;
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}
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};
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int main() {
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std::ostringstream ok;
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a aa;
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out.str("");
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aa.f();
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ok.str(""); ok
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#ifndef BOOST_CONTRACT_NO_ENTRY_INVARIANTS
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<< "a::static_inv" << std::endl
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<< "a::inv" << std::endl
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#endif
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#ifndef BOOST_CONTRACT_NO_PRECONDITIONS
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<< "a::f::pre" << std::endl
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#endif
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#ifndef BOOST_CONTRACT_NO_OLDS
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<< "a::f::old" << std::endl
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#endif
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<< "a::f::body" << std::endl
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#ifndef BOOST_CONTRACT_NO_EXIT_INVARIANTS
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<< "a::static_inv" << std::endl
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<< "a::inv" << std::endl
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#endif
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#ifndef BOOST_CONTRACT_NO_POSTCONDITIONS
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<< "a::f::post" << std::endl
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#endif
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;
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BOOST_TEST(out.eq(ok.str()));
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return boost::report_errors();
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}
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