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How to use an_invariant method in hypothesis

Best Python code snippet using hypothesis

test_stateful.py

Source:test_stateful.py

...492        def __init__(self):493            super().__init__()494        @invariant()495        @precondition(lambda _: False)496        def an_invariant(self):497            raise ValueError()498        @precondition(lambda _: False)499        @invariant()500        def another_invariant(self):501            raise ValueError()502        @rule()503        def do_stuff(self):504            pass505    run_state_machine_as_test(Invariant)506def test_invalid_rule_argument():507    """Rule kwargs that are not a Strategy are expected to raise an InvalidArgument error."""508    with pytest.raises(InvalidArgument):509        class InvalidRuleMachine(RuleBasedStateMachine):510            @rule(strategy=object())...

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