Tests for pyctr.type.config

[ihaveamac]

Things to check:

• save
  • valid save loads
    • known blocks are loaded with correct data and flags
    • to_bytes results in the same file
  • valid use
    • get block with size <= 4 (data is in block entries, replacing size field)
    • get block with size > 4 (data is in data section)
    • setting and adding blocks works and to_bytes results in expected file
    • setting with flags 8, 10, 12, and 14 works
    • default flag is 14 (0xE) and is returned when getting block
  • invalid save
    • invalid entry count - InvalidConfigSaveError
    • invalid data offset (past file and before entries) - InvalidConfigSaveError
    • config entries in wrong order (blocks in the data section should be in reverse order to entries)
  • invalid use
    • get block that doesn't exist - BlockIDNotFoundError
    • remove block that doesn't exist - BlockIDNotFoundError
    • flag that isn't 8, 10, 12, or 14 - BlockFlagsNotAllowed
    • data that is too big (file can only be 0x8000 total) - OutOfSpaceConfigSaveError
• blocks (as it currently stands)
  • valid uses
    • get_username (must return string)
    • get_user_time_offset (must return int)
    • get_system_model (must return SystemModel)
  • invalid uses
    • get_username (invalid utf-16le?)
    • get_user_time_offset (???)
    • get_system_model (a value not in SystemModel)