def test_cylon_boundaries(cylon_models):
assert cylon_models.show_current == 'U-87 Cyber Combat Unit'
assert cylon_models._index == 0
assert prev(cylon_models) == 'Humanoid Cylons'
assert cylon_models._index == 9
assert next(cylon_models) == 'U-87 Cyber Combat Unit'
assert cylon_models._index == 0
def test_cylon_boundaries(cylon_models):
assert cylon_models.current() == "U-87 Cyber Combat Unit"
assert cylon_models._index == 0
assert prev(cylon_models) == "Humanoid Cylons"
assert cylon_models._index == 9
assert next(cylon_models) == "U-87 Cyber Combat Unit"
assert cylon_models._index == 0
def test_cylon_methods(cylon_models):
assert next(cylon_models) == 'Civilian Cylon'
assert cylon_models._index == 1
assert next(cylon_models) == 'Cylon War-Era Centurion'
assert cylon_models._index == 2
assert next(cylon_models) == 'Cython'
assert cylon_models._index == 3
assert prev(cylon_models) == 'Cylon War-Era Centurion'
assert cylon_models._index == 2