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"""Various regression tests for dataclasses."""
# See issues:
# - https://github.com/pylint-dev/pylint/issues/2605
# - https://github.com/pylint-dev/pylint/issues/2698
from dataclasses import dataclass, field
import dataclasses as dc
from typing import cast
@dataclass
class Test:
"""A test dataclass with a field, that has a default_factory."""
test: list = field(default_factory=list)
TEST = Test()
TEST.test.append(1)
print(TEST.test[0])
@dc.dataclass # Note the use of dc instead of dataclasses
class Test2:
"""Test dataclass that uses a renamed import of dataclasses"""
int_prop: int = dc.field(default=10)
list_prop: list = dc.field(default_factory=list)
dict_prop: dict = dc.field(default_factory=dict)
TEST2 = Test2()
for _ in TEST2.list_prop: # This is okay
pass
TEST2.dict_prop["key"] = "value" # This is okay
# Test2.int_prop is inferred as 10, not a Field
print(Test2.int_prop + 1)
for _ in Test2.int_prop: # [not-an-iterable]
pass
Test2.int_prop["key"] = "value" # [unsupported-assignment-operation]
@dc.dataclass
class TEST3:
"""Test dataclass that puts call to field() in another function call"""
attribute: int = cast(int, field(default_factory=dict))
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