test_cases.txt

1. Program displays help menu when -h or --help
2. Verify that the program parse the args correctly
3. Exit program and print help for invalid args
4. Verify message queue open correctly + handle error if it occurs
5. Verify that consumer and producer thread created and joined correctly
6. Verify that the message get filled by producer thread before get calculated in consumer thread
7. Verify that message is calculated correctly following Collatz Conjecture pattern and print out the step when finished