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# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# For details: https://github.com/PyCQA/pylint/blob/main/LICENSE
# Copyright (c) https://github.com/PyCQA/pylint/blob/main/CONTRIBUTORS.txt
"""For the visitors.diadefs module."""
# pylint: disable=redefined-outer-name
from __future__ import annotations
import os
import warnings
from collections.abc import Generator
from pathlib import Path
import astroid
import pytest
from astroid import nodes
from pylint.pyreverse import inspector
from pylint.pyreverse.inspector import Project
from pylint.testutils.utils import _test_cwd
from pylint.typing import GetProjectCallable
HERE = Path(__file__)
TESTS = HERE.parent.parent
@pytest.fixture
def project(get_project: GetProjectCallable) -> Generator[Project, None, None]:
with _test_cwd(TESTS):
project = get_project("data", "data")
linker = inspector.Linker(project)
with warnings.catch_warnings():
warnings.filterwarnings("ignore", category=DeprecationWarning)
linker.visit(project)
yield project
def test_class_implements(project: Project) -> None:
klass = project.get_module("data.clientmodule_test")["Ancestor"]
assert hasattr(klass, "implements")
assert len(klass.implements) == 1
assert isinstance(klass.implements[0], nodes.ClassDef)
assert klass.implements[0].name == "Interface"
def test_class_implements_specialization(project: Project) -> None:
klass = project.get_module("data.clientmodule_test")["Specialization"]
assert hasattr(klass, "implements")
assert len(klass.implements) == 0
def test_locals_assignment_resolution(project: Project) -> None:
klass = project.get_module("data.clientmodule_test")["Specialization"]
assert hasattr(klass, "locals_type")
type_dict = klass.locals_type
assert len(type_dict) == 2
keys = sorted(type_dict.keys())
assert keys == ["TYPE", "top"]
assert len(type_dict["TYPE"]) == 1
assert type_dict["TYPE"][0].value == "final class"
assert len(type_dict["top"]) == 1
assert type_dict["top"][0].value == "class"
def test_instance_attrs_resolution(project: Project) -> None:
klass = project.get_module("data.clientmodule_test")["Specialization"]
assert hasattr(klass, "instance_attrs_type")
type_dict = klass.instance_attrs_type
assert len(type_dict) == 3
keys = sorted(type_dict.keys())
assert keys == ["_id", "relation", "relation2"]
assert isinstance(type_dict["relation"][0], astroid.bases.Instance), type_dict[
"relation"
]
assert type_dict["relation"][0].name == "DoNothing"
assert type_dict["_id"][0] is astroid.Uninferable
def test_concat_interfaces() -> None:
cls = astroid.extract_node(
'''
class IMachin: pass
class Correct2:
"""docstring"""
__implements__ = (IMachin,)
class BadArgument:
"""docstring"""
__implements__ = (IMachin,)
class InterfaceCanNowBeFound: #@
"""docstring"""
__implements__ = BadArgument.__implements__ + Correct2.__implements__
'''
)
interfaces = inspector.interfaces(cls)
assert [i.name for i in interfaces] == ["IMachin"]
def test_interfaces() -> None:
module = astroid.parse(
"""
class Interface(object): pass
class MyIFace(Interface): pass
class AnotherIFace(Interface): pass
class Concrete0(object):
__implements__ = MyIFace
class Concrete1:
__implements__ = (MyIFace, AnotherIFace)
class Concrete2:
__implements__ = (MyIFace, AnotherIFace)
class Concrete23(Concrete1): pass
"""
)
for klass, interfaces in (
("Concrete0", ["MyIFace"]),
("Concrete1", ["MyIFace", "AnotherIFace"]),
("Concrete2", ["MyIFace", "AnotherIFace"]),
("Concrete23", []),
):
klass = module[klass]
assert [i.name for i in inspector.interfaces(klass)] == interfaces
def test_from_directory(project: Project) -> None:
expected = os.path.join("tests", "data", "__init__.py")
assert project.name == "data"
assert project.path.endswith(expected)
def test_project_node(project: Project) -> None:
expected = [
"data",
"data.clientmodule_test",
"data.property_pattern",
"data.suppliermodule_test",
]
assert sorted(project.keys()) == expected
def test_interface_deprecation(project: Project) -> None:
linker = inspector.Linker(project)
cls = astroid.extract_node(
'''
class IMachin: pass
class Concrete: #@
"""docstring"""
__implements__ = (IMachin,)
'''
)
with pytest.warns(DeprecationWarning):
linker.visit_classdef(cls)
|
