const { BN } = require('openzeppelin-test-helpers'); const CountersImpl = artifacts.require('CountersImpl'); const EXPECTED = [new BN(1), new BN(2), new BN(3), new BN(4)]; const KEY1 = web3.utils.sha3('key1'); const KEY2 = web3.utils.sha3('key2'); contract('Counters', function ([_, owner]) { beforeEach(async function () { this.mock = await CountersImpl.new({ from: owner }); }); context('custom key', async function () { it('should return expected values', async function () { for (const expectedId of EXPECTED) { await this.mock.doThing(KEY1, { from: owner }); const actualId = await this.mock.theId(); actualId.should.be.bignumber.equal(expectedId); } }); }); context('parallel keys', async function () { it('should return expected values for each counter', async function () { for (const expectedId of EXPECTED) { await this.mock.doThing(KEY1, { from: owner }); let actualId = await this.mock.theId(); actualId.should.be.bignumber.equal(expectedId); await this.mock.doThing(KEY2, { from: owner }); actualId = await this.mock.theId(); actualId.should.be.bignumber.equal(expectedId); } }); }); });