松露JS测试不起作用
松露JS测试不起作用
提问于 2018-06-01 02:46:14
我在Truffle框架中有一个可靠的契约，我不明白为什么我的JS测试不能工作。
我正在尝试测试'setPlayers‘函数，契约可以工作，测试正在运行，但我不能理解如何在测试中调用该函数：
pragma solidity ^0.4.23;
contract Swindle {
string public eventName;
uint public entryFee;
string[] public players;
string public winner;
uint public winnings;
function comp(string _eventName, uint _entryFee) public {
eventName = _eventName;
entryFee = _entryFee;
}
function addPlayers(string _player) public {
players.push(_player);
}
function winner(string _player) public returns (string, uint) {
winner = _player;
winnings = (players.length * entryFee);
return (winner, winnings);
}
}测试文件：
var Swindle = artifacts.require("Swindle");
contract('Swindle', function(accounts) {
it('sets player to stuart', function(){
return Swindle.deployed().then(function(instance) {
swindle = instance;
return swindle.addPlayers.call("stuart");
}).then(function(swindle) {
assert.equal(swindle.players[0], "stuart", "sets the total supply");
})
})
})错误：
0 passing (302ms)
1 failing
1) Contract: Swindle
sets player to stuart:
TypeError: Cannot read property '0' of undefined
at test/test-swindle.js:10:32
at <anonymous>
at process._tickCallback (internal/process/next_tick.js:118:7)回答 1
Stack Overflow用户
回答已采纳
发布于 2018-06-01 03:46:30
在契约中没有您在测试中提到的setPlayers方法。
你不能在你的javascript中直接访问合约的数组。首先，您需要调用players as方法。
it('sets player to stuart', function(){
return Swindle.deployed().then(function(instance) {
swindle = instance;
return swindle.addPlayers.call("stuart");
}).then(function(swindle) {
return swindle.players();
}).then(function(players) {
assert.equal(players[0], "stuart", "sets the total supply");
})
})你可以使用async/await来获得更好的测试可读性。
it('sets player to stuart', async () => {
let swindle = await Swindle.deployed();
await swindle.addPlayers.call("stuart");
let players = await swindle.players.call();
assert.equal(players[0], "stuart", "sets the total supply");
});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/50630871
复制相关文章
相似问题
腾讯云开发者
