# Test the following scenarios:
# 1. Generate a Key, and use it to make a call
# 2. Make a call with invalid key, expect it to fail
# 3. Make a call to a key with invalid model - expect to fail
# 4. Make a call to a key with valid model - expect to pass
# 5. Make a call with expired key - expect to fail
# 6. Make a call with unexpired key - expect to pass
# 7. Make a call with key under budget, expect to pass
# 8. Make a call with key over budget, expect to fail