def test_stack_copy(self):
"""Should create an exact of the PDA stack."""
stack = PDAStack(['a', 'b'])
stack_copy = stack.copy()
nose.assert_is_not(stack, stack_copy)
nose.assert_equal(stack, stack_copy)
def test_stack_copy(self):
"""Should create an exact of the PDA stack."""
stack = PDAStack(['a', 'b'])
stack_copy = stack.copy()
nose.assert_is_not(stack, stack_copy)
nose.assert_equal(stack, stack_copy)
