overview
After developing an Ethereum smart contract using the Solidity language, I utilized Ganache to deploy my contract for testing purposes. However, in order to conduct tests effectively, I need to create a new instance of my contract using JavaScript.
approach
To achieve this, I proceeded to write a test script named tests/test.js within my project directory:
const expect = require('chai').expect
const Round = artifacts.require('Round')
contract('pledgersLength1', async function(accounts) {
it('1 pledger', async function() {
let r = await Round.deployed()
await r.pledge(5)
let len = (await r.pledgersLength()).toNumber()
expect(len).to.equal(1)
})
})
contract('pledgersLength2', async function(accounts) {
it('2 pledgers', async function() {
let r = await Round.deployed()
await r.pledge(5)
await r.pledge(6)
let len = (await r.pledgersLength()).toNumber()
expect(len).to.equal(2)
})
}
Running the test with truffle test (which is based on Mocha), revealed a discrepancy in how the contract instances are handled. Despite utilizing the truffle contract function similar to Mocha's describe, there was an unexpected behavior where the contract was not created anew each time.
I explored the possibility of using new Round() instead of Round.deployed(), but am uncertain about its implementation. The key is to ensure that each test case operates on a fresh instance of the contract.
While my preference is to resolve this issue without depending solely on truffle, any alternative solution that achieves the desired outcome is welcome.