To use the test runner:

• navigate into the ./cmd directory
• if run with the defaults (go run .), the application will run in asynchronous mode and write it's output directly to the shell
  • the -out flag allows a destination file to be specified
  • the -async flag determines if the logger will asynchronously or not. It is async by default, which will not work properly in the application's initial condition.

To run the tests

• use the go test command from the command line
• to focus on a specific test, use the -run flag followed by a pattern that matches the test name
  • e.g. go test -run MessageChannel will run the first test of the first module
• all tests for a given module can be run by passing the module identifier to the -run command
  • e.g. go test -v -run Module1