# Path: automata/base/automaton.py
# class Automaton(metaclass=abc.ABCMeta):
#     """An abstract base class for all automata, including Turing machines."""
# 
#     @abc.abstractmethod
#     def __init__(self):
#         """Initialize a complete automaton."""
#         raise NotImplementedError
# 
#     @abc.abstractmethod
#     def validate(self):
#         """Return True if this automaton is internally consistent."""
#         raise NotImplementedError
# 
#     @abc.abstractmethod
#     def read_input_stepwise(self, input_str):
#         """Return a generator that yields each step while reading input."""
#         raise NotImplementedError
# 
#     def read_input(self, input_str):
#         """
#         Check if the given string is accepted by this automaton.
# 
#         Return the automaton's final configuration if this string is valid.
#         """
#         validation_generator = self.read_input_stepwise(input_str)
#         for config in validation_generator:
#             pass
#         return config
# 
#     def accepts_input(self, input_str):
#         """Return True if this automaton accepts the given input."""
#         try:
#             self.read_input(input_str)
#             return True
#         except exceptions.RejectionException:
#             return False
# 
#     def _validate_initial_state(self):
#         """Raise an error if the initial state is invalid."""
#         if self.initial_state not in self.states:
#             raise exceptions.InvalidStateError(
#                 '{} is not a valid initial state'.format(self.initial_state))
# 
#     def _validate_initial_state_transitions(self):
#         """Raise an error if the initial state has no transitions defined."""
#         if self.initial_state not in self.transitions:
#             raise exceptions.MissingStateError(
#                 'initial state {} has no transitions defined'.format(
#                     self.initial_state))
# 
#     def _validate_final_states(self):
#         """Raise an error if any final states are invalid."""
#         invalid_states = self.final_states - self.states
#         if invalid_states:
#             raise exceptions.InvalidStateError(
#                 'final states are not valid ({})'.format(
#                     ', '.join(str(state) for state in invalid_states)))
# 
#     def copy(self):
#         """Create a deep copy of the automaton."""
#         return self.__class__(**vars(self))
# 
#     def __eq__(self, other):
#         """Check if two automata are equal."""
#         return vars(self) == vars(other)


import nose.tools as nose
from automata.base.automaton import Automaton
#!/usr/bin/env python3
"""Functions for testing the Automaton abstract base class."""




def test_abstract_methods_not_implemented():
    """Should raise NotImplementedError when calling abstract methods."""
    abstract_methods = {
        '__init__': (Automaton,),
        'validate': (Automaton,),
        'read_input_stepwise': (Automaton, '')
    }
    for method_name, method_args in abstract_methods.items():
        with nose.assert_raises(NotImplementedError):

# Path: automata/base/automaton.py
# class Automaton(metaclass=abc.ABCMeta):
#     """An abstract base class for all automata, including Turing machines."""
# 
#     @abc.abstractmethod
#     def __init__(self):
#         """Initialize a complete automaton."""
#         raise NotImplementedError
# 
#     @abc.abstractmethod
#     def validate(self):
#         """Return True if this automaton is internally consistent."""
#         raise NotImplementedError
# 
#     @abc.abstractmethod
#     def read_input_stepwise(self, input_str):
#         """Return a generator that yields each step while reading input."""
#         raise NotImplementedError
# 
#     def read_input(self, input_str):
#         """
#         Check if the given string is accepted by this automaton.
# 
#         Return the automaton's final configuration if this string is valid.
#         """
#         validation_generator = self.read_input_stepwise(input_str)
#         for config in validation_generator:
#             pass
#         return config
# 
#     def accepts_input(self, input_str):
#         """Return True if this automaton accepts the given input."""
#         try:
#             self.read_input(input_str)
#             return True
#         except exceptions.RejectionException:
#             return False
# 
#     def _validate_initial_state(self):
#         """Raise an error if the initial state is invalid."""
#         if self.initial_state not in self.states:
#             raise exceptions.InvalidStateError(
#                 '{} is not a valid initial state'.format(self.initial_state))
# 
#     def _validate_initial_state_transitions(self):
#         """Raise an error if the initial state has no transitions defined."""
#         if self.initial_state not in self.transitions:
#             raise exceptions.MissingStateError(
#                 'initial state {} has no transitions defined'.format(
#                     self.initial_state))
# 
#     def _validate_final_states(self):
#         """Raise an error if any final states are invalid."""
#         invalid_states = self.final_states - self.states
#         if invalid_states:
#             raise exceptions.InvalidStateError(
#                 'final states are not valid ({})'.format(
#                     ', '.join(str(state) for state in invalid_states)))
# 
#     def copy(self):
#         """Create a deep copy of the automaton."""
#         return self.__class__(**vars(self))
# 
#     def __eq__(self, other):
#         """Check if two automata are equal."""
#         return vars(self) == vars(other)


# Path: tests/test_automaton.py
import nose.tools as nose
from automata.base.automaton import Automaton

#!/usr/bin/env python3
"""Functions for testing the Automaton abstract base class."""




def test_abstract_methods_not_implemented():
    """Should raise NotImplementedError when calling abstract methods."""
    abstract_methods = {
        '__init__': (Automaton,),
        'validate': (Automaton,),
        'read_input_stepwise': (Automaton, '')
    }
    for method_name, method_args in abstract_methods.items():
        with nose.assert_raises(NotImplementedError):

            getattr(Automaton, method_name)(*method_args)