Blockchain By Example

Testing our token sale contract

The tests for out token sale contract will be slightly more involved as they will require references to both our contracts.

We will start by creating a new file, PacktTokenSale.test.js, in the test/ directory of our project. At the head of the file we require abstractions of both contracts:

var PacktTokenSale = artifacts.require('./PacktTokenSale.sol');var PacktToken = artifacts.require('./PacktToken');

We can then set up some variables for use during the tests:

contract('PacktTokenSale', async (accounts) => {  let owner = accounts[0];  let buyer = accounts[1];  let tokensToSell = 500000;  let tokenPrice = 1000000000000000;  let numberOfTokens;  ...});

We are using Ganache's first address as the owner of the sale, ...