68 lines
1.6 KiB
C++
68 lines
1.6 KiB
C++
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// Copyright 2018-2022 Emil Dotchevski and Reverge Studios, Inc.
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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 copy at http://www.boost.org/LICENSE_1_0.txt)
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#if __cplusplus < 201703L
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#include <iostream>
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int main()
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{
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std::cout << "Unit test not applicable." << std::endl;
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return 0;
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}
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#else
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#ifdef BOOST_LEAF_TEST_SINGLE_HEADER
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# include "leaf.hpp"
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#else
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# include <boost/leaf/to_variant.hpp>
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#endif
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#include "_test_ec.hpp"
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#include "lightweight_test.hpp"
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namespace leaf = boost::leaf;
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enum class E1 { e11, e12, e13 };
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enum class E2 { e21, e22, e23 };
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enum class E3 { e31, e32, e33 };
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int main()
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{
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#if !defined(__clang__) || __clang_major__ < 5 || __clang_major__ > 7 // See https://github.com/llvm/llvm-project/issues/32569
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{
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auto v = leaf::to_variant<E1, E2, E3>(
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[ ]() -> leaf::result<int>
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{
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return 42;
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} );
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BOOST_TEST(v.index() == 0);
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BOOST_TEST(std::get<0>(v) == 42);
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}
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{
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auto v = leaf::to_variant<E1, E2, E3>(
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[ ]() -> leaf::result<int>
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{
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return leaf::new_error(E1::e12, E3::e31);
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} );
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BOOST_TEST(v.index() == 1);
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auto t = std::get<1>(v);
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BOOST_TEST(std::get<0>(t).has_value());
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BOOST_TEST(!std::get<1>(t).has_value());
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BOOST_TEST(std::get<2>(t).has_value());
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BOOST_TEST(std::get<0>(t).value() == E1::e12);
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BOOST_TEST(std::get<2>(t).value() == E3::e31);
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}
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#endif
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return boost::report_errors();
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}
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#endif
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