Class HaskKeyCrasher

Lib/test/test_context.py:638–649

class HaskKeyCrasher:
    def __init__(self, *, error_on_hash=False, error_on_eq=False):
        self.error_on_hash = error_on_hash
        self.error_on_eq = error_on_eq

    def __enter__(self):
        if HashKey._crasher is not None:
            raise RuntimeError('cannot nest crashers')
        HashKey._crasher = self

    def __exit__(self, *exc):
        HashKey._crasher = None


class HashingError(Exception):