@safe-global/safe-contracts/test/libraries/Safe.spec.ts

Ethereum multisig contract

import { expect } from "chai";
import hre from "hardhat";
import "@nomiclabs/hardhat-ethers";
import { getContractStorageLayout } from "../utils/storage";

const EXPECTED_LAYOUT = [
    { name: "singleton", slot: "0", offset: 0, type: "t_address" },
    {
        name: "modules",
        slot: "1",
        offset: 0,
        type: "t_mapping(t_address,t_address)",
    },
    {
        name: "owners",
        slot: "2",
        offset: 0,
        type: "t_mapping(t_address,t_address)",
    },
    { name: "ownerCount", slot: "3", offset: 0, type: "t_uint256" },
    { name: "threshold", slot: "4", offset: 0, type: "t_uint256" },
    { name: "nonce", slot: "5", offset: 0, type: "t_uint256" },
    {
        name: "_deprecatedDomainSeparator",
        slot: "6",
        offset: 0,
        type: "t_bytes32",
    },
    {
        name: "signedMessages",
        slot: "7",
        offset: 0,
        type: "t_mapping(t_bytes32,t_uint256)",
    },
    {
        name: "approvedHashes",
        slot: "8",
        offset: 0,
        type: "t_mapping(t_address,t_mapping(t_bytes32,t_uint256))",
    },
];

describe("SafeStorage", async () => {
    it("follows the expected storage layout", async () => {
        const safeStorageLayout = await getContractStorageLayout(hre, "SafeStorage");

        expect(safeStorageLayout).to.deep.eq(EXPECTED_LAYOUT);
    });
});