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# pylint: disable=missing-module-docstring
# pylint: disable=too-many-statements
import pytest
import smartcard.ulist
def test_demonstrate_ulist_cannot_be_instantiated():
"""ulist() cannot be instantiated without an argument."""
with pytest.raises(TypeError, match="'NoneType' object is not iterable"):
smartcard.ulist.ulist()
@pytest.mark.xfail(reason="order should be ['x', 1, 2] not [1, 2, 'x']", strict=True)
def test_demonstrate_order_is_not_respected():
"""Order is not strictly respected."""
instance = smartcard.ulist.ulist([1, 2])
new_instance = ["x"] + instance
assert new_instance == ["x", 1, 2]
@pytest.mark.xfail(reason="not all list methods are overwritten", strict=True)
def test_demonstrate_non_unique_behavior():
"""ulist.extend() breaks uniqueness guarantees."""
instance = smartcard.ulist.ulist([1, 2])
instance.extend([1, 2, 3])
assert instance == [1, 2] # actually, it's [1, 2, 1, 2, 3]
def test_ulist_methods():
"""This broadly tests the ulist implementation.
It can be removed when ulist is removed.
"""
smartcard.ulist.ulist([])
smartcard.ulist.ulist([1])
smartcard.ulist.ulist([1, 1])
instance = smartcard.ulist.ulist([1])
original_id = id(instance)
assert instance
assert len(instance) == 1
assert instance == [1]
assert id(instance) == original_id
instance.append(1)
assert instance
assert len(instance) == 1
assert instance == [1]
assert id(instance) == original_id
instance.append(2)
assert instance
assert len(instance) == 2
assert instance == [1, 2]
assert id(instance) == original_id
new_instance = instance + [3]
assert new_instance is not instance
assert new_instance == [1, 2, 3]
assert instance == [1, 2]
assert id(instance) == original_id
new_instance = instance + [1, 2]
assert new_instance is not instance
assert new_instance == [1, 2]
assert instance == [1, 2]
assert id(instance) == original_id
new_instance = [1, 2] + instance
assert new_instance is not instance
assert new_instance == [1, 2]
assert instance == [1, 2]
assert id(instance) == original_id
instance += 2
assert instance == [1, 2]
assert id(instance) == original_id
instance.insert(0, 0)
assert len(instance) == 3
assert instance == [0, 1, 2]
instance.insert(10_000, 0)
assert len(instance) == 3
assert instance == [0, 1, 2]
value = instance.pop()
assert value == 2
assert instance == [0, 1]
value = instance.pop(0)
assert value == 0
assert instance == [1]
instance.pop()
instance.append(0)
instance.remove(0)
with pytest.raises(ValueError):
instance.remove(0)
my_pristine_list = [0, 1, 2, 0, 1, 2, 0, 1, 2]
instance += my_pristine_list
assert my_pristine_list == [0, 1, 2, 0, 1, 2, 0, 1, 2]
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