one_of: a small piece of code that removes switch on enum statements.

one_of.h

template <typename EnumT> constexpr
bool one_of(EnumT value, const std::initializer_list<EnumT>& checkValues)
{
    for (const auto& cv : checkValues)
    {
        if (value == cv)
        {
            return true;
        }
    }
    return false;
}

test.cpp

enum class TestEnum
{
    A,
    B,
    C
};

TEST(one_of, one_of)
{
    EXPECT_TRUE(one_of(TestEnum::A, {TestEnum::A, TestEnum::B}));
    EXPECT_TRUE(one_of(TestEnum::B, {TestEnum::A, TestEnum::B}));
    EXPECT_FALSE(one_of(TestEnum::C, {TestEnum::A, TestEnum::B}));
}