truffle.js

module.exports = {
  // See <http://truffleframework.com/docs/advanced/configuration>
  // to customize your Truffle configuration!
  networks: {
    development: {
      host: "localhost",
      port: 8545,
      network_id: "*",
      before_timeout: 300,
      test_timeout: 300
    },
    ganache: {
      host: "localhost",
      port: 7545,
      network_id: "*",
      before_timeout: 300,
      test_timeout: 300
    },
    coverage: {
      host: "localhost",
      network_id: "*",
      port: 8555,         // <-- If you change this, also set the port option in .solcover.js.
      gas: 0xfffffffffff, // <-- Use this high gas value
      gasPrice: 0x01,      // <-- Use this low gas price
      before_timeout: 300,
      test_timeout: 300
    }
  }
};