"""
Redis DB exceptions.
"""


class RedisDbError(Exception):
    """
    Base class for exceptions in this package.
    """

    pass


class ComparedTracksLimitError(RedisDbError):
    """
    Raised if user tries to add new track to comparison and there are no empty slots.
    """

    pass


class DuplicateComparedTracks(RedisDbError):
    """
    Raised if user tries to add the same track to comparison twice.
    """

    pass


class UnsupportedCacheMode(RedisDbError):
    """Raised if user tries to set unsupported value as a cache mode."""

    pass