DisableLogOutput redirect log's default logger to a buffer and returns it.

MakeAppMock returns an initialized ApplicationMock.

MakeTB returns a fully initialized TB instance.

PrintIf trims the whitespace around a string encoded as []byte and prints it only if not empty.

ApplicationMock wrap both an Application and a TB.

TB wraps a testing.T object and adds functionality specific to command_support.

Application supports all of subcommands.Application and adds GetLog() for testing purposes.