trouble when testing solidity

Question

const assert = require('assert');
const ganache = require('ganache-cli');
const Web3 = require('web3');
const web3 = new Web3(ganache.provider());
const { interface, bytecode } = require('../compile');

let accounts;
let inbox;

beforeEach(async () => {
  // Get a list of all accounts
  accounts = await web3.eth.getAccounts();

  // Use one of those accounts to deploy
  // the contract
  inbox = await new web3.eth.Contract(JSON.parse(interface))
    .deploy({
      data: bytecode,
      arguments: ['Hi there!']
    })
    .send({ from: accounts[0], gas: '1000000' });
});

describe('Inbox', () => {
    it('deploys a contract', () => {
    assert.ok(inbox.options.address);
  });

  it('has a default message', async () => {
    const message = await inbox.methods.message().call();
    assert.equal(message, 'Hi there!');
  });

  it('can change the message', async () => {
    await inbox.methods.setMessage('bye').send({ from: accounts[0] });
    const message = await inbox.methods.message().call();
    assert.equal(message, 'bye');
  });
});

after running the above code i keep getting the following error

[email protected] test C:\Users\user\Documents\inbox

mocha

Inbox 1) "before each" hook for "deploys a contract"

0 passing (98ms) 1 failing

1) "before each" hook for "deploys a contract": SyntaxError: Unexpected token u in JSON at position 0 at JSON.parse () at Context.beforeEach (test\inbox.test.js:16:44) at

npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! [email protected] test: mocha npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the [email protected] test script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\user\AppData\Roaming\npm-cache_logs\2018-07-03T13_17_54_895Z-debug.log

C:\Users\user\Documents\inbox\test>

Answer 1

When I changed my encoding from 'UTF-8' to 'utf8' in my compile.js file it worked.

My compile.js file looks like this

const path = require('path'); //for crossplatform
const fs = require('fs'); //file system
const solc = require('solc');

const inboxPath = path.resolve(__dirname, 'contracts', 'Inbox.sol');
const source = fs.readFileSync(inboxPath, 'utf8'); //change to utf8 to UTF-8

module.exports = solc.compile(source, 1).contracts[':Inbox'];