Function RegisterInvalidInit

cpp/src/arrow/compute/expression_test.cc:628–655

}

static Status RegisterInvalidInit() {
  const std::string name = "invalid_init";
  struct CastableFunction : public ScalarFunction {
    using ScalarFunction::ScalarFunction;

    Result<const Kernel*> DispatchBest(std::vector<TypeHolder>* types) const override {
      return Status::Invalid("Shouldn't call DispatchBest on this function");
    }
  };
  auto func =
      std::make_shared<CastableFunction>(name, Arity::Unary(), FunctionDoc::Empty());

  auto func_exec = [](KernelContext*, const ExecSpan&, ExecResult*) -> Status {
    return Status::OK();
  };
  auto func_init = [](KernelContext*,
                      const KernelInitArgs&) -> Result<std::unique_ptr<KernelState>> {
    return Status::Invalid("Invalid Init");
  };

  ScalarKernel kernel({int64()}, int64(), func_exec, func_init);
  ARROW_RETURN_NOT_OK(func->AddKernel(kernel));

  auto registry = GetFunctionRegistry();
  ARROW_RETURN_NOT_OK(registry->AddFunction(std::move(func)));

  return Status::OK();
}

// GH-47268: The bad status in call binding is discarded.
TEST(Expression, BindCallError) {