Function create

crates/c-api/tests/component/values.cc:94–101

                                              Span<const Val>, Span<Val>);

static Context create(std::string_view type, std::string_view body,
                      std::string_view host_params, host_func_t callback) {
  Engine engine;
  Linker linker(engine);
  linker.root().add_func("do", callback).unwrap();
  auto component_text = echo_component(type, body, host_params);
  return Context::New(engine, component_text, linker);
}

TEST(component, value_record) {
  static const auto check = [](const Val &v, uint64_t x, uint64_t y) {