openzeppelin-contracts/truffle-config.js

module.exports = {
  networks: {
    development: {
      host: 'localhost',
      port: 8545,
      network_id: '*', // eslint-disable-line camelcase
    },
    coverage: {
      host: 'localhost',
      network_id: '*', // eslint-disable-line camelcase
      port: 8555,
      gas: 0xfffffffffff,
      gasPrice: 0x01,
    },
  },

  compilers: {
    solc: {
      version: '0.5.2',
    },
  },
};