协定方法参数个数无效
协定方法参数个数无效
提问于 2018-05-30 19:59:25
我刚刚开始使用Truffle and Solidity，并写下了我的第一份基本合同。我也写了一个测试，但它总是失败，给我以下信息：
Error: Invalid number of arguments to Solidity function
现在，这个问题看起来很直截了当，我并没有提出正确的论点……除了我所能看到的我
这是我的相关合同代码：
pragma solidity ^0.4.18;
contract FundEth {
mapping (uint => Project) _projects;
struct Project {
uint id;
uint targetWei;
uint targetBlock;
uint balanceWei;
string name;
string description;
bool payedOut;
}
function fund(uint projectId) public payable
{
_projects[projectId].balanceWei += msg.value;
}
function create(uint targetWei, uint blocks, string name, string description)
public
returns (uint)
{
Project memory p = Project({
id: ++_indexCounter,
targetWei: targetWei,
targetBlock: block.number + blocks,
balanceWei: 0,
name: name,
description: description,
payedOut: false
});
_projects[p.id] = p;
return p.id;
}
function getProjectName(uint projectId)
public
view
returns (string)
{
return "FOO";
}
function getProjectBalance(uint projectId)
public
view
returns (uint)
{
return 10000000;
}
...
}这是我的测试代码：
const FundEth = artifacts.require("./FundEth.sol");
contract('FundEth', accounts => {
var _id;
var _fundEth;
it("should create a project", () => {
return FundEth.deployed()
.then(fundEth => {
_fundEth = fundEth;
return fundEth.create(1000000000000000000 /* 1 Eth */ , 5, "FOO", "We want to fund this for testing.")
}).then(id => {
_id = id;
return _fundEth.getProjectName.call(_id)
}).then(name => {
assert.equal(name, "FOO", "Has not created a valid project.");
});
});
it("should fund a project", () => {
return FundEth.deployed()
.then(fundEth => {
assert.notEqual(_id, 0);
_fundEth = fundEth;
_fundEth.fund.sendTransaction(_id, { from: accounts[0], value: 10000000 }); << SEEMS TO FAIL HERE.
}).then(() => {
return _fundEth.getProjectBalance.call(_id);;
}).then(balance => {
assert.equal(balance, 10000000, "Balance of test project was not 1 ether.");
});
});
});我知道这份合同现在不是很有用，但我不明白它为什么会失败。完整的错误：
1) Contract: FundEth
should fund a project:
Uncaught Error: Invalid number of arguments to Solidity function
at Object.InvalidNumberOfSolidityArgs (/usr/local/lib/node_modules/truffle/build/webpack:/~/web3/lib/web3/errors.js:25:1)
at SolidityFunction.validateArgs (/usr/local/lib/node_modules/truffle/build/webpack:/~/web3/lib/web3/function.js:74:1)
at SolidityFunction.toPayload (/usr/local/lib/node_modules/truffle/build/webpack:/~/web3/lib/web3/function.js:90:1)
at SolidityFunction.sendTransaction (/usr/local/lib/node_modules/truffle/build/webpack:/~/web3/lib/web3/function.js:163:1)
at /usr/local/lib/node_modules/truffle/build/webpack:/~/truffle-contract/contract.js:135:1
at new Promise (<anonymous>)
at /usr/local/lib/node_modules/truffle/build/webpack:/~/truffle-contract/contract.js:126:1
at <anonymous>
at process._tickCallback (internal/process/next_tick.js:118:7)回答 1
Stack Overflow用户
发布于 2018-05-31 06:11:31
将行更改为
return _fundEth.fund(_id, { from: accounts[0], value: 10000000 });似乎解决了这个问题。但是，我还需要在调用之前删除断言，以便进行有效的测试。
页面原文内容由Stack Overflow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://stackoverflow.com/questions/50604141
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