89 lines
3.4 KiB
C++
89 lines
3.4 KiB
C++
/* Unit testing for outcomes
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(C) 2013-2019 Niall Douglas <http://www.nedproductions.biz/> (9 commits)
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Boost Software License - Version 1.0 - August 17th, 2003
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Permission is hereby granted, free of charge, to any person or organization
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obtaining a copy of the software and accompanying documentation covered by
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this license (the "Software") to use, reproduce, display, distribute,
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execute, and transmit the Software, and to prepare derivative works of the
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Software, and to permit third-parties to whom the Software is furnished to
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do so, all subject to the following:
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The copyright notices in the Software and this entire statement, including
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the above license grant, this restriction and the following disclaimer,
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must be included in all copies of the Software, in whole or in part, and
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all derivative works of the Software, unless such copies or derivative
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works are solely in the form of machine-executable object code generated by
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a source language processor.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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#include <boost/outcome/outcome.hpp>
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#include <boost/test/unit_test.hpp>
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#include <boost/test/unit_test_monitor.hpp>
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BOOST_OUTCOME_AUTO_TEST_CASE(issues_0010_test, "Expected's operator->(), operator*() and .error() throw exceptions when they should not")
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{
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using namespace BOOST_OUTCOME_V2_NAMESPACE;
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const char *a = "hi", *b = "bye";
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struct udt1 // NOLINT
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{
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const char *_v{nullptr};
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udt1() = default;
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constexpr explicit udt1(const char *v) noexcept : _v(v) {}
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constexpr udt1(udt1 &&o) noexcept : _v(o._v) { o._v = nullptr; }
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udt1(const udt1 &) = default;
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constexpr udt1 &operator=(udt1 &&o) noexcept
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{
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_v = o._v;
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o._v = nullptr;
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return *this;
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}
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udt1 &operator=(const udt1 &) = delete;
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constexpr const char *operator*() const noexcept { return _v; }
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};
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struct udt2 // NOLINT
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{
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const char *_v{nullptr};
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udt2() = default;
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constexpr explicit udt2(const char *v) noexcept : _v(v) {}
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constexpr udt2(udt2 &&o) noexcept : _v(o._v) { o._v = nullptr; }
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udt2(const udt2 &) = default;
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constexpr udt2 &operator=(udt2 &&o) noexcept
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{
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_v = o._v;
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o._v = nullptr;
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return *this;
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}
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udt1 &operator=(const udt1 &) = delete;
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constexpr const char *operator*() const noexcept { return _v; }
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};
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result<udt1, udt2> p(udt1{a});
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result<udt1, udt2> n(udt2{b});
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// State check
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BOOST_CHECK(p.has_value());
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BOOST_CHECK(!n.has_value());
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// These should behave as expected (!)
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// BOOST_CHECK_NO_THROW(p.value());
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// BOOST_CHECK_NO_THROW(n.value());
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// And state is not destroyed
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BOOST_CHECK(p.has_value() && *p.assume_value() == a);
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BOOST_CHECK(!n.has_value() && *n.assume_error() == b);
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// LEWG Expected provides rvalue ref semantics for operator*(), error() and error_or()
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udt1 a1(std::move(p.assume_value()));
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BOOST_CHECK(*a1 == a);
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BOOST_CHECK(*p.assume_value() == nullptr);
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udt2 e2(std::move(n).assume_error());
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BOOST_CHECK(*e2 == b);
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BOOST_CHECK(*n.assume_error() == nullptr); // NOLINT
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}
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