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How to use invariant_3 method in hypothesis

Best Python code snippet using hypothesis

test_stateful.py

...491        def invariant_2(self):492            pass493        @precondition(lambda self: self.num > 0)494        @invariant()495        def invariant_3(self):496            pass497        @rule()498        def rule_1(self):499            self.num += 1500            if self.num == 2:501                raise ValueError()502    with capture_out() as o:503        with pytest.raises(ValueError):504            run_state_machine_as_test(BadRuleWithGoodInvariants)505    result = o.getvalue()506    assert (507        result508        == """\509Falsifying example:510state = BadRuleWithGoodInvariants()511state.invariant_1()512state.initialize_1()513state.invariant_1()514state.invariant_2()515state.rule_1()516state.invariant_1()517state.invariant_2()518state.invariant_3()519state.rule_1()520state.teardown()521"""522    )523def test_always_runs_at_least_one_step():524    class CountSteps(RuleBasedStateMachine):525        def __init__(self):526            super().__init__()527            self.count = 0528        @rule()529        def do_something(self):530            self.count += 1531        def teardown(self):532            assert self.count > 0...

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