Unit tests for CLI

[tonygallen]

CLI Test Coverage

We need comprehensive test coverage for the CLI to ensure all commands work correctly.

Main Commands

• faery --help / -h
• faery input {file, stdin, camera, udp}
• faery output {file, files, udp, view, stdout}
• faery filter - test with all filters
• faery list-filters
• faery init
• faery run

Error Handling

• Missing required arguments
• Invalid file paths / file formats
• Invalid filter parameters

Pipeline Tests

• input -> output
• input -> filter -> output
• input -> filter -> filter -> output

Please add to this list if I have missed some usage patterns or edge cases.