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✅ Add tests for to_underlying with arithmetic types #228

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Merged
merged 1 commit into from
May 23, 2025
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✅ Add tests for to_underlying with arithmetic types #228

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19 changes: 15 additions & 4 deletions test/to_underlying.cpp
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
#include <stdx/type_traits.hpp>

#include <catch2/catch_template_test_macros.hpp>
#include <catch2/catch_test_macros.hpp>

#include <type_traits>
Expand All @@ -25,8 +26,18 @@ TEST_CASE("to_underlying values", "[type_traits]") {
CHECK(stdx::to_underlying(ScopedEnum::Value5) == 5);
}

TEST_CASE("to_underlying works on integral types", "[type_traits]") {
constexpr int x = 0;
CHECK(std::is_same_v<decltype(stdx::to_underlying(x)), int>);
CHECK(stdx::to_underlying(x) == 0);
TEMPLATE_TEST_CASE("to_underlying works on integral types", "[type_traits]",
bool, char, signed char, unsigned char, short int,
unsigned short int, int, unsigned int, long int,
unsigned long int) {
constexpr TestType x{};
CHECK(std::is_same_v<decltype(stdx::to_underlying(x)), TestType>);
CHECK(stdx::to_underlying(x) == TestType{});
}

TEMPLATE_TEST_CASE("to_underlying works on floating point types",
"[type_traits]", float, double) {
constexpr TestType x{};
CHECK(std::is_same_v<decltype(stdx::to_underlying(x)), TestType>);
CHECK(stdx::to_underlying(x) == TestType{});
}