Function test_sequence_struct

scripts/test_stringzilla.cpp:171–206

@brief Validates `sz_sequence_t` and related construction utilities. */

/** @brief Validates `sz_sequence_t` and related construction utilities. */
void test_sequence_struct() {
    // Make sure the sequence helper functions work as expected
    // for both trivial c-style arrays and more complicated STL containers.
    {
        sz_sequence_t sequence;
        sz_cptr_t strings[] = {"banana", "apple", "cherry"};
        sz_sequence_from_null_terminated_strings(strings, 3, &sequence);
        assert(sequence.count == 3);
        assert("banana"_sv == sequence.get_start(sequence.handle, 0));
        assert("apple"_sv == sequence.get_start(sequence.handle, 1));
        assert("cherry"_sv == sequence.get_start(sequence.handle, 2));
    }
    // Do the same for STL:
    {
        using strings_vector_t = std::vector<std::string>;
        strings_vector_t strings = {"banana", "apple", "cherry"};
        sz_sequence_t sequence;
        sequence.handle = &strings;
        sequence.count = strings.size();
        sequence.get_start =
            reinterpret_cast<sz_sequence_member_start_t>(+[](void *handle, sz_size_t index) noexcept -> sz_cptr_t {
                auto const &strings = *static_cast<strings_vector_t *>(handle);
                return strings[index].c_str();
            });
        sequence.get_length =
            reinterpret_cast<sz_sequence_member_length_t>(+[](void *handle, sz_size_t index) noexcept -> sz_size_t {
                auto const &strings = *static_cast<strings_vector_t *>(handle);
                return strings[index].size();
            });

        assert(sequence.count == 3);
        assert("banana"_sv == sequence.get_start(sequence.handle, 0));
        assert("apple"_sv == sequence.get_start(sequence.handle, 1));
        assert("cherry"_sv == sequence.get_start(sequence.handle, 2));
    }
}

/** @brief Validates `sz_memory_allocator_t` and related construction utilities. */
void test_memory_allocator_struct() {