Testing a lottery contract (snippet)

lottery.test.js

it('allows an account to enter', async () => {
  await lottery.methods.enter().send({
    from: accounts[0],
    value: web3.utils.toWei('0.015', 'ether'),
  });

  const players = await lottery.methods.players().call({
    from: accounts[0],
  });
  const balance = await lottery.methods.getBalance().call({
    from: accounts[0],
  })

  assert.equal(accounts[0], players[0]);
  assert.equal(players.length, 1);
  assert.equal(balance, web3.utils.toWei('0.015', 'ether'));
});