I'm trying to write and run tests for my smart contract and I get this error: "Error: Provider not set or invalid"
Smart contract code:
const assert = require('assert');
const ganache = require('ganache-cli');
const Web3 = require('web3');
const provider = ganache.provider();
const web3 = new Web3(provider);
const { interface, bytecode } = require('../compile');
let lottery;
let accounts;
beforeEach(async () => {
accounts = await web3.eth.getAccounts();
const contractJson = JSON.parse(interface);
lottery = await new web3.eth.Contract(contractJson)
.deploy({data: bytecode})
.send({ from : accounts[0], gas: '1000000' })
});
describe('Lottery Contract', () => {
it('deploys a contract', () => {
assert.ok(lottery.options.address);
});
it('allows one account to enter', async () => {
await lottery.methods.enter().send({
from: accounts[0],
value: web3.utils.toWei('0.02', 'ether')
});
const players = await lottery.methods.getPlayers().call({
from: accounts[0]
});
assert.equal(accounts[0], players[0]);
assert.equal(1, players.length);
});
});
It fails exactly after this code:
await lottery.methods.enter().send({
from: accounts[0],
value: web3.utils.toWei('0.02', 'ether')
});
Any ideas?
Best Answer
I have read the solution in one of Stephen Grider's Udemy course:
According to Grider's comment in the course, this is due to some bug in Web3.
Hope it helps.