用安全帽测试智能触点
用安全帽测试智能触点
提问于 2022-10-26 04:42:17
我试着用安全帽测试我的聪明的合同。首先，我把多边形的主板分叉成这样：
npx hardhat node --fork https://polygon-mainnet.g.alchemy.com/v2/...在此之后，我可以使用以下方法运行本地测试：
npx hardhat test --network local现在，我想用uniswapV2Router测试一个交换。所以我想用几个代币来资助我的合同。因为草帽制造了几个钱包，里面有很多eth，所以我试着发送eth (在我的情况下应该是马季奇？)从一个钱包到我的合同，但我的合同余额仍然是0。所以一开始，我的聪明合同是什么样子：
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
import "hardhat/console.sol";
import "./interfaces/IUniswapV2Router02.sol";
contract MakeSwap is {
address private owner;
IUniswapV2Router02 public quickRouter;
constructor(
address _quickRouter
) {
owner = msg.sender;
quickRouter = IUniswapV2Router02(_quickRouter);
}
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
receive() external payable {}
function swapExactTokensForTokensQuick(
uint256 _amountIn,
uint256 _amountOutMin,
address _tokenIn,
address _tokenOut,
uint256 deadline
) external returns (uint256) {
IERC20(_tokenIn).approve(address(quickRouter), _amountIn);
address[] memory path;
path = new address[](2);
path[0] = _tokenIn;
path[1] = _tokenOut;
uint256[] memory amounts = quickRouter.swapExactTokensForTokens(
_amountIn,
_amountOutMin,
path,
address(this),
deadline
);
console.log(amounts[1]);
return amounts[1];
}
}我正在像这样测试交换：
const { SignerWithAddress } = require("@nomiclabs/hardhat-ethers/signers");
const { expect } = require("chai");
const { ethers } = require("hardhat");
const {
IERC20,
} = require("../artifacts/@openzeppelin/contracts/token/ERC20/IERC20.sol/IERC20.json");
const token_Address_usdc = "0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174";
const token_Address_weth = "0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619";
const token_Address_wmatic = "0x0d500B1d8E8eF31E21C99d1Db9A6444d3ADf1270";
const router_quick = "0xa5E0829CaCEd8fFDD4De3c43696c57F7D7A678ff";
const erc20_abi = require("../abis/erc20abi.json");
const weth_abi = require("../abis/wethabi.json");
describe("test", () => {
let Contract, owner, addr1, addr2;
beforeEach(async () => {
[owner, addr1, addr2, _] = await ethers.getSigners();
factory = await ethers.getContractFactory("MakeSwap");
Contract = await factory.deploy(router_quick);
await Contract.deployed();
const weth = new ethers.Contract(token_Address_weth, erc20_abi, ethers.provider);
const usdc = new ethers.Contract(token_Address_usdc, erc20_abi, ethers.provider);
const wmatic = new ethers.Contract(token_Address_wmatic, erc20_abi, ethers.provider);
var contractBalance_weth = await weth.balanceOf(Contract.address);
var contractBalance_usdc = await usdc.balanceOf(Contract.address);
var contractBalance_wmatic = await wmatic.balanceOf(Contract.address);
console.log("WETH Balance: ", contractBalance_weth.toString());
console.log("USDC Balance: ", contractBalance_usdc.toString());
console.log("WMATIC Balance: ", contractBalance_wmatic.toString());
//Wallet #17 -> Should have 10000 ETH -> Created from hardhat
const priv_key_17 =
"0x...";
const addr_17 = "0x...";
const signer = await ethers.provider.getSigner(addr_17);
await signer.sendTransaction({
to: Contract.address,
value: ethers.utils.parseUnits("1", 18),
});
var contractBalance_weth = await weth.balanceOf(Contract.address);
var contractBalance_usdc = await usdc.balanceOf(Contract.address);
var contractBalance_wmatic = await wmatic.balanceOf(Contract.address);
console.log("WETH Balance: ", contractBalance_weth.toString());
console.log("USDC Balance: ", contractBalance_usdc.toString());
console.log("WMATIC Balance: ", contractBalance_wmatic.toString());
});
describe("trade", async () => {
it("Should create a trade", async () => {
const weth = new ethers.Contract(token_Address_weth, erc20_abi, ethers.provider);
const usdc = new ethers.Contract(token_Address_usdc, erc20_abi, ethers.provider);
const wmatic = new ethers.Contract(token_Address_wmatic, erc20_abi, ethers.provider);
const timestamp = (await ethers.provider.getBlock("latest")).timestamp;
const deadline = timestamp + 3000;
amountOutMin = ethers.utils.parseUnits("2000", 6);
amountIn = ethers.utils.parseUnits("1", 18);
var contractBalance_weth = await weth.balanceOf(Contract.address);
var contractBalance_usdc = await usdc.balanceOf(Contract.address);
var contractBalance_wmatic = await wmatic.balanceOf(Contract.address);
console.log("WETH Balance: ", contractBalance_weth.toString());
console.log("USDC Balance: ", contractBalance_usdc.toString());
console.log("WMATIC Balance: ", contractBalance_wmatic.toString());
await Contract.provider.send("hardhat_setBalance", [
Flashloan.address,
ethers.utils.parseUnits("5", 18).toHexString(),
]);
var contractBalance_weth = await weth.balanceOf(Contract.address);
var contractBalance_usdc = await usdc.balanceOf(Contract.address);
var contractBalance_wmatic = await wmatic.balanceOf(Contract.address);
console.log("WETH Balance: ", contractBalance_weth.toString());
console.log("USDC Balance: ", contractBalance_usdc.toString());
console.log("WMATIC Balance: ", contractBalance_wmatic.toString());
await expect(
Contract.swapExactTokensForTokensSushi(
amountIn,
amountOutMin,
token_Address_weth,
token_Address_usdc,
deadline
)
); //.to.not.reverted;
var contractBalance_weth = await weth.balanceOf(Contract.address);
var contractBalance_usdc = await usdc.balanceOf(Contract.address);
var contractBalance_wmatic = await wmatic.balanceOf(Contract.address);
console.log("WETH Balance: ", contractBalance_weth.toString());
console.log("USDC Balance: ", contractBalance_usdc.toString());
console.log("WMATIC Balance: ", contractBalance_wmatic.toString());
});
});
});在这里，我可以启动测试，它运行时没有任何错误，从而导致测试停止。但是在日志中，它写着:红色的eth_sendTransaction和附加信息：Error: VM Exception while processing transaction: reverted with reason string 'TransferHelper: TRANSFER_FROM_FAILED'，对于所有的测试过程，我的console.log(...)语句说余额是0：
WETH Balance: 0
USDC Balance: 0
WMATIC Balance: 0
WETH Balance: 0
USDC Balance: 0
WMATIC Balance: 0
WETH Balance: 0
USDC Balance: 0
WMATIC Balance: 0
WETH Balance: 0
USDC Balance: 0
WMATIC Balance: 0
WETH Balance: 0
USDC Balance: 0
WMATIC Balance: 0有人能帮我资助我的合同并进行互换吗？如果缺少信息，请告诉我，我会添加它。
谢谢!
回答 2
Ethereum用户
发布于 2022-10-26 08:44:52
另一种方法是将合同部署在孟买测试网上，从水龙头上得到一些马季奇，然后发送给你的合同。这就是我通常做测试的方式，而且它是工作的。如果您对来自uniswap路由器的特定功能有问题，只要它的v2，再写一次，我将尽力帮助您解决问题。
Ethereum用户
发布于 2022-10-28 12:04:40
因此，我找到了一种方法，将wmatic (或ethereum网络上的eth )转移到我的合同中：
describe("receive", async () => {
it("Should send tokens", async () => {
const provider = ethers.provider;
expect(await provider.getBalance(Contract.address)).to.equal(0);
await addr1.sendTransaction({
to: Contract.address,
value: 100,
});
console.log(await provider.getBalance(Contract.address));
expect(await provider.getBalance(Contract.address)).to.equal(100);
});
});也可以发送其他令牌吗？还是我必须在我的智能合同中添加功能呢？
页面原文内容由Ethereum提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://ethereum.stackexchange.com/questions/138171
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