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add comparison predicate for enum_cast

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This commit is contained in:
neargye 2020-04-02 17:08:42 +05:00
parent a76480629c
commit 306b1d0704
2 changed files with 74 additions and 47 deletions
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63
test/test.cpp
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@ -28,6 +28,7 @@
#include <magic_enum.hpp>
#include <array>
#include <cctype>
#include <string_view>
#include <sstream>
@ -56,7 +57,7 @@ TEST_CASE("enum_cast") {
constexpr auto cr = enum_cast<Color>("RED");
REQUIRE(cr.value() == Color::RED);
REQUIRE(enum_cast<Color&>("GREEN").value() == Color::GREEN);
REQUIRE(enum_cast<Color>("BLUE").value() == Color::BLUE);
REQUIRE(enum_cast<Color>("blue", [](char lhs, char rhs) { return std::tolower(lhs) == std::tolower(rhs); }).value() == Color::BLUE);
REQUIRE_FALSE(enum_cast<Color>("None").has_value());
constexpr auto no = enum_cast<Numbers>("one");
@ -626,8 +627,8 @@ TEST_CASE("extrema") {
}
}
TEST_CASE("mixed_sign_less") {
using magic_enum::detail::mixed_sign_less;
TEST_CASE("cmp_less") {
using magic_enum::detail::cmp_less;
constexpr std::uint64_t uint64_t_min = std::numeric_limits<std::uint64_t>::min();
constexpr std::uint32_t uint32_t_min = std::numeric_limits<std::uint32_t>::min();
@ -645,48 +646,48 @@ TEST_CASE("mixed_sign_less") {
constexpr std::int32_t offset_int32_t = 17;
SECTION("same signedness") {
REQUIRE(mixed_sign_less(-5, -3));
REQUIRE(mixed_sign_less(27U, 49U));
REQUIRE(cmp_less(-5, -3));
REQUIRE(cmp_less(27U, 49U));
}
SECTION("same signedness, different width") {
REQUIRE(mixed_sign_less(uint32_t_max, uint64_t_max));
REQUIRE_FALSE(mixed_sign_less(uint64_t_max, uint32_t_max));
REQUIRE(mixed_sign_less(int64_t_min, int32_t_min));
REQUIRE_FALSE(mixed_sign_less(int32_t_min, int64_t_min));
REQUIRE(mixed_sign_less(int64_t_min + offset_int64_t, int32_t_min + offset_int32_t));
REQUIRE_FALSE(mixed_sign_less(int32_t_min + offset_int32_t, int64_t_min + offset_int64_t));
REQUIRE(cmp_less(uint32_t_max, uint64_t_max));
REQUIRE_FALSE(cmp_less(uint64_t_max, uint32_t_max));
REQUIRE(cmp_less(int64_t_min, int32_t_min));
REQUIRE_FALSE(cmp_less(int32_t_min, int64_t_min));
REQUIRE(cmp_less(int64_t_min + offset_int64_t, int32_t_min + offset_int32_t));
REQUIRE_FALSE(cmp_less(int32_t_min + offset_int32_t, int64_t_min + offset_int64_t));
}
SECTION("left signed, right unsigned") {
REQUIRE(mixed_sign_less(-5, 3U));
REQUIRE(mixed_sign_less(3, 5U));
REQUIRE(cmp_less(-5, 3U));
REQUIRE(cmp_less(3, 5U));
}
SECTION("left signed, right unsigned, different width") {
REQUIRE(mixed_sign_less(int32_t_max, uint64_t_max));
REQUIRE_FALSE(mixed_sign_less(int64_t_max, uint32_t_max));
REQUIRE(mixed_sign_less(int32_t_min, uint64_t_min));
REQUIRE(mixed_sign_less(int64_t_min, uint32_t_min));
REQUIRE(mixed_sign_less(int32_t_max - offset_int32_t, uint64_t_max));
REQUIRE_FALSE(mixed_sign_less(int64_t_max - offset_int64_t, uint32_t_max));
REQUIRE(mixed_sign_less(int32_t_min + offset_int32_t, uint64_t_min));
REQUIRE(mixed_sign_less(int64_t_min + offset_int64_t, uint32_t_min));
REQUIRE(cmp_less(int32_t_max, uint64_t_max));
REQUIRE_FALSE(cmp_less(int64_t_max, uint32_t_max));
REQUIRE(cmp_less(int32_t_min, uint64_t_min));
REQUIRE(cmp_less(int64_t_min, uint32_t_min));
REQUIRE(cmp_less(int32_t_max - offset_int32_t, uint64_t_max));
REQUIRE_FALSE(cmp_less(int64_t_max - offset_int64_t, uint32_t_max));
REQUIRE(cmp_less(int32_t_min + offset_int32_t, uint64_t_min));
REQUIRE(cmp_less(int64_t_min + offset_int64_t, uint32_t_min));
}
SECTION("left unsigned, right signed") {
REQUIRE_FALSE(mixed_sign_less(3U, -5));
REQUIRE(mixed_sign_less(3U, 5));
REQUIRE_FALSE(cmp_less(3U, -5));
REQUIRE(cmp_less(3U, 5));
}
SECTION("left unsigned, right signed, different width") {
REQUIRE(mixed_sign_less(uint32_t_max, int64_t_max));
REQUIRE_FALSE(mixed_sign_less(uint64_t_max, int32_t_max));
REQUIRE_FALSE(mixed_sign_less(uint32_t_min, int64_t_min));
REQUIRE_FALSE(mixed_sign_less(uint64_t_min, int32_t_min));
REQUIRE(mixed_sign_less(uint32_t_max, int64_t_max - offset_int32_t));
REQUIRE_FALSE(mixed_sign_less(uint64_t_max, int32_t_max - offset_int64_t));
REQUIRE_FALSE(mixed_sign_less(uint32_t_min, int64_t_min + offset_int32_t));
REQUIRE_FALSE(mixed_sign_less(uint64_t_min, int32_t_min + offset_int64_t));
REQUIRE(cmp_less(uint32_t_max, int64_t_max));
REQUIRE_FALSE(cmp_less(uint64_t_max, int32_t_max));
REQUIRE_FALSE(cmp_less(uint32_t_min, int64_t_min));
REQUIRE_FALSE(cmp_less(uint64_t_min, int32_t_min));
REQUIRE(cmp_less(uint32_t_max, int64_t_max - offset_int32_t));
REQUIRE_FALSE(cmp_less(uint64_t_max, int32_t_max - offset_int64_t));
REQUIRE_FALSE(cmp_less(uint32_t_min, int64_t_min + offset_int32_t));
REQUIRE_FALSE(cmp_less(uint64_t_min, int32_t_min + offset_int64_t));
}
}