Class PseudoPlugin

testing/test_config.py:1643–1651

        files = ()

    class PseudoPlugin:
        x = 42

        attrs_used = []

        def __getattr__(self, name):
            assert name in (class="st">"__loader__", class="st">"__spec__")
            self.attrs_used.append(name)
            return object()

    def distributions():
        return (Distribution(),)