"""Feature Exceptions.

List of all our feature exceptions. Those are system exceptions: if a file is
misconfigured, the entire system should fail and the issue should be fixed.
"""


class DuplicateFeatureVariantException(Exception):
    """DuplicateFeatureVariantException."""

    pass


class MissingFeatureVariant(Exception):
    """MissingFeatureVariant."""

    pass


class UnexpectedGrassValidity(Exception):
    """UnexpectedGrassValidity.

    This should be raised when an unexpected instance method is called on
    Grass.
    """

    pass


class ContextWithoutValidation(Exception):
    """ContextWithoutValidity.

    This should be raised when Context isn't validated.
    """

    pass


class InvalidContext(Exception):
    """InvalidContext.

    This should be raised when a Context is invalid.
    """

    pass