How to use check_a_positive method in hypothesis

Best Python code snippet using hypothesis

test_stateful.py

Source:test_stateful.py Github

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...871 @rule()872 def inc(self):873 self.a += 1874 @invariant()875 def check_a_positive(self):876 # This will fail if run before the init_a method, but without877 # @invariant(check_during_init=True) it will only run afterwards.878 assert self.a >= 0879def test_invariants_are_checked_after_init_steps():880 run_state_machine_as_test(TrickyInitMachine)881def test_invariants_can_be_checked_during_init_steps():882 class UndefinedMachine(TrickyInitMachine):883 @invariant(check_during_init=True)884 def check_a_defined(self):885 # This will fail because `a` is undefined before the init rule.886 self.a887 with pytest.raises(AttributeError):888 run_state_machine_as_test(UndefinedMachine)889def test_check_during_init_must_be_boolean():...

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