forked from TartanLlama/expected
77 lines
1.7 KiB
C++
77 lines
1.7 KiB
C++
#include "catch.hpp"
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#include "expected.hpp"
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TEST_CASE("Simple assignment", "[assignment.simple]") {
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tl::expected<int,int> e1 = 42;
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tl::expected<int,int> e2 = 17;
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tl::expected<int,int> e3 = 21;
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tl::expected<int,int> e4 = tl::make_unexpected(42);
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tl::expected<int,int> e5 = tl::make_unexpected(17);
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tl::expected<int,int> e6 = tl::make_unexpected(21);
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e1 = e2;
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REQUIRE(e1);
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REQUIRE(*e1 == 17);
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REQUIRE(e2);
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REQUIRE(*e2 == 17);
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e1 = std::move(e2);
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REQUIRE(e1);
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REQUIRE(*e1 == 17);
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REQUIRE(e2);
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REQUIRE(*e2 == 17);
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e1 = 42;
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REQUIRE(e1);
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REQUIRE(*e1 == 42);
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auto unex = tl::make_unexpected(12);
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e1 = unex;
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REQUIRE(!e1);
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REQUIRE(e1.error() == 12);
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e1 = tl::make_unexpected(42);
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REQUIRE(!e1);
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REQUIRE(e1.error() == 42);
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e1 = e3;
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REQUIRE(e1);
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REQUIRE(*e1 == 21);
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e4 = e5;
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REQUIRE(!e4);
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REQUIRE(e4.error() == 17);
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e4 = std::move(e6);
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REQUIRE(!e4);
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REQUIRE(e4.error() == 21);
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e4 = e1;
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REQUIRE(e4);
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REQUIRE(*e4 == 21);
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}
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TEST_CASE("Assignment deletion", "[assignment.deletion]") {
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struct has_all {
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has_all() = default;
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has_all(const has_all&) = default;
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has_all(has_all&&) noexcept = default;
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has_all& operator=(const has_all&) = default;
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};
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tl::expected<has_all, has_all> e1 = {};
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tl::expected<has_all, has_all> e2 = {};
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e1 = e2;
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struct except_move {
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except_move() = default;
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except_move(const except_move&) = default;
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except_move(except_move&&) noexcept(false) {};
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except_move& operator=(const except_move&) = default;
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};
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tl::expected<except_move, except_move> e3 = {};
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tl::expected<except_move, except_move> e4 = {};
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e3 = e4;
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}
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