Question

我有一份简单的合同，我正在努力为Truffle的合同编写Solidity测试。以下是代码示例 -

File: dummycontract.sol

pragma solidity ^0.4.17;

contract DummyContract {

    uint[] public elements;

    function addElement(uint element) public {
        elements.push(element);
    }

    function getNumberOfElements() public view returns(uint) {
        uint numElements = uint(elements.length);
        return numElements;
    }

}

测试文件 -

pragma solidity ^0.4.17;

import "truffle/Assert.sol";
import "truffle/DeployedAddresses.sol";
import "../contracts/dummycontract.sol";

contract TestZombieFactory {

    function testInitialState() public {
        DummyContract dummyContract = DummyContract(DeployedAddresses.DummyContract());
        uint numberOfElements = dummyContract.getNumberOfElements();
        Assert.equal(numberOfElements == 0);
    }

}

在运行truffle test时，我收到以下错误 -

TypeError: Member "equal" is not available in type(library Assert) outside of storage.
        Assert.equal(numberOfElements == 0);

有人可以向我解释一下吗？

Answer 1

您对<h1>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Corrupti doloribus beatae laboriosam aspernatur magni, molestias possimus, rerum voluptates dolorum aliquam est soluta animi inventore ut at eius voluptatum quod omnis.</h1>的使用不正确。它需要两个值并在函数内进行比较。函数签名是

Assert.equal()

将您的测试合同更改为以下内容，它将起作用。

function equal(uint A, uint B, string message) constant returns (bool result)

Answer 2

你应该替换

Assert.equal(numberOfElements,0);

与

function myFunction() {
  var a = document.getElementById("QuantityList").value;
  return a;
}

function myFunction2(a) {
  var b = a * 4.99;
  document.getElementById("demo").innerHTML = b;
  return b;
}

运行松露测试时，Assert.equal不可用

2 个答案: