Wierd behaviour with encodeABI

[Smrt666]

I am using your library to test a smart contract that requires another one. I am also using npx hardhat test test/simpleTest.ts for testing. I am not sure if this is a bug or just me doing something I shouldn't. Here is my code for test/simpleTest.ts:

import { MockContractInstance, PChainStakeMirrorVerifierInstance, PChainStakeMirrorVerifierMockInstance } from "../../../../typechain-truffle";
import type { SignerWithAddress } from "@nomiclabs/hardhat-ethers/signers";
import { BN } from "bn.js";
import { ethers } from 'hardhat';

import { abi } from "../artifacts/contracts/Random.sol/Random.json"

import { RandomContract, RouletteContract, RouletteInstance } from '../typechain-types/';
import { RandomInstance } from "../typechain-types/contracts/Random";

const MockContract = artifacts.require("MockContract");
const Roulette: RouletteContract = artifacts.require('Roulette');
const Random: RandomInstance = artifacts.require('Random');

function bn(n: any) {
    return new BN(n.toString());
}

const IRandom = new web3.eth.Contract(
    abi as any
)

describe('Roulette', async () => {
    let roulette: RouletteInstance
    let owner: SignerWithAddress
    let randomMock: MockContractInstance

    beforeEach(async () => {

        
        randomMock = await MockContract.new();
        const methodGetRandom = IRandom.methods.getRandom(25).encodeABI()

        // await ethers.getSigners();
        [owner] = await ethers.getSigners();

        randomMock.givenCalldataReturn(
            methodGetRandom, 
            web3.eth.abi.encodeParameters(["uint256", "bool"], [12345 , true])
        )

        console.log(owner);
    })
})

This code produces TypeError: Cannot create property 'undefined' on string '0xcd4b69140000000000000000000000000000000000000000000000000000000000000019'. If I uncomment // await ethers.getSigners();, it works.

If I move randomMock... above getting owner, then owner is undefined. Again uncommenting that await ... line makes it work again.

I hope either I am doing something wrong or it helps you improve your library. If you need more information I can provide it.