How do I pass a function pointer to a contract method from a unit test?

Question

I'm getting this error:

Error: invalid type (arg="type", value="function")

when trying to call this method on the contract IntOption:

function create(
    address target,
    string memory name,
    int initialValue,
    function (address, string memory, int) external view validate
) public {

from my unit test. I'm trying to pass this function defined in Config4AccessControl as argument for validate:

function anyValue(address, string memory, int value) public pure {
    // any value is ok
}

This is the unit test:

it("should not be defined after it's created", async () => {
    const intOptions = await IntOption.new();
    const ac = await Config4AccessControl.new();
    await intOptions.create(addr1, 'foo', 1, ac.anyValue.address);

Answer 1

This doesn't seem to be supported by web3 (at the time of writing: 1.2.4): https://github.com/ethereum/web3.js/issues/2826