Class SerialLiar

IPython/core/tests/test_oinspect.py:148–162

Attribute accesses always get another copy of the same class. unittest.mock.call does something similar, but it's not ideal for testing as the failure mode is to eat all your RAM. This gives up after 10k levels.

class SerialLiar(object):
    """Attribute accesses always get another copy of the same class.

    unittest.mock.call does something similar, but it's not ideal for testing
    as the failure mode is to eat all your RAM. This gives up after 10k levels.
    """
    def __init__(self, max_fibbing_twig, lies_told=0):
        if lies_told > 10000:
            raise RuntimeError('Nose too long, honesty is the best policy')
        self.max_fibbing_twig = max_fibbing_twig
        self.lies_told = lies_told
        max_fibbing_twig[0] = max(max_fibbing_twig[0], lies_told)

    def __getattr__(self, item):
        return SerialLiar(self.max_fibbing_twig, self.lies_told + 1)

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# Tests