truffle(ganache)> truffle test
Error: You must specify a network_id in your ‘ganache’ configuration in order to use this network.
Go to config file: truffle-config.js -> uncomment ‘development’ section in ‘networks’. Change port if you have a different one in Ganache, e.g. modfiy from 8545 to 7545.
Save file -> back to console -> run command: ‘truffle test –network development’
Karol memo 