如何将wei / eth发送到合同地址？ （使用松露javascript测试）

Question

我正在尝试将wei / eth发送到具有外部应付款回退功能的团结合同的地址。我下面的松露javascript测试不会导致instance.address的余额变差。 instance.address不是智能合约地址接收方吗？谁能发现console.logging余额为何为0的原因？还是发现我所缺少的东西？

谢谢！

const TestContract = artifacts.require("TestContract");


contract('TestContract', async (accounts) => { 

it('should send 1 ether to TestContract', async () => {
  let instance = await TestContract.deployed();

  instance.send({from: accounts[1], value: 1000000000000000000}); 
  let balance = await web3.eth.getBalance(instance.address);
  console.log('instance.address balance: ' + parseInt(balance));
)}

Answer 1

由于您没有在问题中提供合同，因此我在此假设您的合同如下所示。

文件路径：

./ contracts / TestContract.sol

pragma solidity ^0.4.23;

contract TestContract {

    // all logic goes here...

    function() public payable {
        // payable fallback to receive and store ETH
    }

}

因此，如果您想使用JS从accounts[1]到TestContract发送ETH，请按以下步骤操作：

文件路径：

./ test / TestContract.js

const tc = artifacts.require("TestContract");

contract('TestContract', async (accounts) => {

    let instance;

    // Runs before all tests in this block.
    // Read about .new() VS .deployed() here:
    // https://twitter.com/zulhhandyplast/status/1026181801239171072
    before(async () => {
        instance = await tc.new();
    })

    it('TestContract balance should starts with 0 ETH', async () => {
        let balance = await web3.eth.getBalance(instance.address);
        assert.equal(balance, 0);
    })

    it('TestContract balance should has 1 ETH after deposit', async () => {
        let one_eth = web3.toWei(1, "ether");
        await web3.eth.sendTransaction({from: accounts[1], to: instance.address, value: one_eth});
        let balance_wei = await web3.eth.getBalance(instance.address);
        let balance_ether = web3.fromWei(balance_wei.toNumber(), "ether");
        assert.equal(balance_ether, 1);
    })

})

请参阅上面代码中的注释，以了解有关Truffle中.new()和.deployed()关键字之间差异的更多信息。

我的解决方案的完整源代码可以在here中找到。

Answer 2

您最不希望发送到一个地址，而不是一个对象。

instance.address.send({from: accounts[1], value: 1000000000000000000});

Answer 3

解决了！我忘了我必须通过web3和eth发送交易，如下所示：

web3.eth.sendTransaction({})

还是谢谢！

Answer 4

用于在您的松露测试文件中使用 Web3.js v1.4.0。

const SolidityTest = artifacts.require('SolidityTest');

contract('SolidityTest', (accounts) => {

    let solidityTest;

    before(async () => {
        solidityTest = await SolidityTest.new();
    })

    it('Test something', async () => {

        // Send 100 wei to the contract.
        // `sendEth` is your payable method.
        await solidityTest.sendEth({from: accounts[1], value: 100});

        // Check account 1 balance.
        let acc1Balance = await web3.eth.getBalance(accounts[1]);
        // Convert the unit from wei to eth
        acc1Balance = web3.utils.fromWei(acc1Balance, 'ether')
        console.log('acc1 balance:', acc1Balance)

        // Check the contract balance.
        let contractBalance = await web3.eth.getBalance(solidityTest.address);
        contractBalance = web3.utils.fromWei(contractBalance, 'ether')
        console.log('contract balance:', contractBalance)
    });
});