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from copy import copy, deepcopy
from pytest import raises
from graphql.pyutils import FrozenError, FrozenList
def describe_frozen_list():
def can_read():
fl = FrozenList([1, 2, 3])
assert fl == [1, 2, 3]
assert list(i for i in fl) == fl
assert fl.copy() == fl
assert 2 in fl
assert 4 not in fl
assert fl + [4, 5] == [1, 2, 3, 4, 5]
assert [4, 5] + fl == [4, 5, 1, 2, 3]
assert fl * 2 == [1, 2, 3, 1, 2, 3]
assert 2 * fl == [1, 2, 3, 1, 2, 3]
assert fl[1] == 2
with raises(IndexError):
fl[3]
assert fl[1:4] == [2, 3]
assert fl[::2] == [1, 3]
assert len(fl) == 3
assert min(fl) == 1
assert max(fl) == 3
assert sum(fl) == 6
assert fl.index(2) == 1
with raises(ValueError):
fl.index(4)
assert fl.count(2) == 1
assert fl.count(4) == 0
assert list(reversed(fl)) == [3, 2, 1]
assert sorted(fl) == [1, 2, 3]
def cannot_write():
fl = FrozenList([1, 2, 3])
with raises(FrozenError):
fl[1] = 4
with raises(FrozenError):
fl[1:4] = [4]
with raises(FrozenError):
del fl[1]
with raises(FrozenError):
del fl[1:4]
with raises(FrozenError):
fl[1::2] = [4]
with raises(FrozenError):
del fl[::2]
with raises(FrozenError):
fl.append(4)
with raises(FrozenError):
fl.clear()
with raises(FrozenError):
fl.extend([4])
with raises(FrozenError):
fl += [4]
with raises(FrozenError):
fl *= 2
with raises(FrozenError):
fl.insert(1, 4)
with raises(FrozenError):
fl.pop()
with raises(FrozenError):
fl.remove(2)
with raises(FrozenError):
fl.sort()
with raises(FrozenError):
fl.reverse()
assert fl == [1, 2, 3]
def can_add_rol():
fl1 = FrozenList([1, 2])
rol2 = FrozenList([3, 4])
assert fl1 + rol2 == [1, 2, 3, 4]
def can_add_tuple():
fl = FrozenList([1, 2])
assert fl + (3, 4) == [1, 2, 3, 4]
def can_hash():
fl1 = FrozenList([1, 2])
fl2 = FrozenList([1, 2])
assert fl2 == fl1
assert fl2 is not fl1
assert hash(fl2) == hash(fl1)
fl3 = FrozenList([1, 3])
assert fl3 != fl1
assert hash(fl3) != hash(fl1)
def can_copy():
fl1 = FrozenList([1, 2])
fl2 = copy(fl1)
assert isinstance(fl2, FrozenList)
assert fl2 == fl1
assert hash(fl2) == hash(fl1)
assert fl2 is not fl1
def can_deep_copy():
fl11 = FrozenList([1, 2])
fl12 = FrozenList([2, 1])
fl1 = FrozenList([fl11, fl12])
fl2 = deepcopy(fl1)
assert isinstance(fl2, FrozenList)
assert fl2 == fl1
assert hash(fl2) == hash(fl1)
assert isinstance(fl2[0], FrozenList)
assert isinstance(fl2[1], FrozenList)
assert fl2[0] == fl1[0]
assert fl2[0] is not fl1[0]
assert fl2[1] == fl1[1]
assert fl2[1] is not fl1[1]
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