51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
#include <gtest/gtest.h>
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#include <m5_utility/stl/expected.hpp>
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#include <memory>
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#include <vector>
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#include <tuple>
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namespace {
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struct takes_init_and_variadic {
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std::vector<int> v;
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std::tuple<int, int> t;
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template <class... Args>
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takes_init_and_variadic(std::initializer_list<int> l, Args &&...args) : v(l), t(std::forward<Args>(args)...)
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{
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}
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};
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} // namespace
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TEST(Expected, Emplace)
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{
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{
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m5::stl::expected<std::unique_ptr<int>, int> e;
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e.emplace(new int{42});
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EXPECT_TRUE(e);
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EXPECT_TRUE(**e == 42);
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}
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{
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m5::stl::expected<std::vector<int>, int> e;
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e.emplace({0, 1});
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EXPECT_TRUE(e);
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EXPECT_TRUE((*e)[0] == 0);
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EXPECT_TRUE((*e)[1] == 1);
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}
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{
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m5::stl::expected<std::tuple<int, int>, int> e;
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e.emplace(2, 3);
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EXPECT_TRUE(e);
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EXPECT_TRUE(std::get<0>(*e) == 2);
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EXPECT_TRUE(std::get<1>(*e) == 3);
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}
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{
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m5::stl::expected<::takes_init_and_variadic, int> e = m5::stl::make_unexpected(0);
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e.emplace({0, 1}, 2, 3);
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EXPECT_TRUE(e);
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EXPECT_TRUE(e->v[0] == 0);
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EXPECT_TRUE(e->v[1] == 1);
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EXPECT_TRUE(std::get<0>(e->t) == 2);
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EXPECT_TRUE(std::get<1>(e->t) == 3);
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}
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}
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