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#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# Copyright 2022 The Matrix.org Foundation C.I.C.
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# See the GNU Affero General Public License for more details:
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
# Originally licensed under the Apache License, Version 2.0:
# <http://www.apache.org/licenses/LICENSE-2.0>.
#
# [This file includes modifications made by New Vector Limited]
#
#
from contextlib import contextmanager
from os import PathLike
from pathlib import Path
from typing import Generator, cast
from unittest.mock import patch
from packaging.markers import default_environment as packaging_default_environment
from synapse.util.check_dependencies import (
DependencyException,
check_requirements,
metadata,
)
from tests.unittest import TestCase
class DummyDistribution(metadata.Distribution):
def __init__(self, version: str):
self._version = version
@property
def version(self) -> str:
return self._version
def locate_file(self, path: str | PathLike) -> Path:
raise NotImplementedError()
def read_text(self, filename: str) -> None:
raise NotImplementedError()
old = DummyDistribution("0.1.2")
old_release_candidate = DummyDistribution("0.1.2rc3")
new = DummyDistribution("1.2.3")
new_release_candidate = DummyDistribution("1.2.3rc4")
distribution_with_no_version = DummyDistribution(None) # type: ignore[arg-type]
# could probably use stdlib TestCase --- no need for twisted here
class TestDependencyChecker(TestCase):
@contextmanager
def mock_installed_package(
self, distribution: DummyDistribution | None
) -> Generator[None, None, None]:
"""Pretend that looking up any package yields the given `distribution`.
If `distribution = None`, we pretend that the package is not installed.
"""
def mock_distribution(name: str) -> DummyDistribution:
if distribution is None:
raise metadata.PackageNotFoundError
else:
return distribution
with patch(
"synapse.util.check_dependencies.metadata.distribution",
mock_distribution,
):
yield
@contextmanager
def mock_python_version(self, version: str) -> Generator[None, None, None]:
"""Override the marker environment to report the supplied `python_version`."""
def fake_default_environment() -> dict[str, str]:
env = cast(dict[str, str], dict(packaging_default_environment()))
env["python_version"] = version
env["python_full_version"] = f"{version}.0"
return env
with patch(
"synapse.util.check_dependencies.default_environment",
side_effect=fake_default_environment,
):
yield
def test_mandatory_dependency(self) -> None:
"""Complain if a required package is missing or old."""
with patch(
"synapse.util.check_dependencies.metadata.requires",
return_value=["dummypkg >= 1"],
):
with self.mock_installed_package(None):
self.assertRaises(DependencyException, check_requirements)
with self.mock_installed_package(old):
self.assertRaises(DependencyException, check_requirements)
with self.mock_installed_package(new):
# should not raise
check_requirements()
def test_version_reported_as_none(self) -> None:
"""Complain if importlib.metadata.version() returns None.
This shouldn't normally happen, but it was seen in the wild
(https://github.com/matrix-org/synapse/issues/12223).
"""
with patch(
"synapse.util.check_dependencies.metadata.requires",
return_value=["dummypkg >= 1"],
):
with self.mock_installed_package(distribution_with_no_version):
self.assertRaises(DependencyException, check_requirements)
def test_checks_ignore_dev_dependencies(self) -> None:
"""Both generic and per-extra checks should ignore dev dependencies."""
with (
patch(
"synapse.util.check_dependencies.metadata.requires",
return_value=["dummypkg >= 1; extra == 'mypy'"],
),
patch("synapse.util.check_dependencies.RUNTIME_EXTRAS", {"cool-extra"}),
):
# We're testing that none of these calls raise.
with self.mock_installed_package(None):
check_requirements()
check_requirements("cool-extra")
with self.mock_installed_package(old):
check_requirements()
check_requirements("cool-extra")
with self.mock_installed_package(new):
check_requirements()
check_requirements("cool-extra")
def test_generic_check_of_optional_dependency(self) -> None:
"""Complain if an optional package is old."""
with patch(
"synapse.util.check_dependencies.metadata.requires",
return_value=["dummypkg >= 1; extra == 'cool-extra'"],
):
with self.mock_installed_package(None):
# should not raise
check_requirements()
with self.mock_installed_package(old):
self.assertRaises(DependencyException, check_requirements)
with self.mock_installed_package(new):
# should not raise
check_requirements()
def test_check_for_extra_dependencies(self) -> None:
"""Complain if a package required for an extra is missing or old."""
with (
patch(
"synapse.util.check_dependencies.metadata.requires",
return_value=["dummypkg >= 1; extra == 'cool-extra'"],
),
patch("synapse.util.check_dependencies.RUNTIME_EXTRAS", {"cool-extra"}),
):
with self.mock_installed_package(None):
self.assertRaises(DependencyException, check_requirements, "cool-extra")
with self.mock_installed_package(old):
self.assertRaises(DependencyException, check_requirements, "cool-extra")
with self.mock_installed_package(new):
# should not raise
check_requirements("cool-extra")
def test_release_candidates_satisfy_dependency(self) -> None:
"""
Tests that release candidates count as far as satisfying a dependency
is concerned.
(Regression test, see https://github.com/matrix-org/synapse/issues/12176.)
"""
with patch(
"synapse.util.check_dependencies.metadata.requires",
return_value=["dummypkg >= 1"],
):
with self.mock_installed_package(old_release_candidate):
self.assertRaises(DependencyException, check_requirements)
with self.mock_installed_package(new_release_candidate):
# should not raise
check_requirements()
def test_setuptools_rust_ignored(self) -> None:
"""
Test a workaround for a `poetry build` problem. Reproduces
https://github.com/matrix-org/synapse/issues/13926.
"""
with patch(
"synapse.util.check_dependencies.metadata.requires",
return_value=["setuptools_rust >= 1.3"],
):
with self.mock_installed_package(None):
# should not raise, even if setuptools_rust is not installed
check_requirements()
with self.mock_installed_package(old):
# We also ignore old versions of setuptools_rust
check_requirements()
def test_python_version_markers_respected(self) -> None:
"""
Tests that python_version markers are properly respected.
Specifically that older versions of dependencies can be installed in
environments with older Python versions.
"""
requirements = [
"pydantic ~= 2.8; python_version < '3.14'",
"pydantic ~= 2.12; python_version >= '3.14'",
]
with patch(
"synapse.util.check_dependencies.metadata.requires",
return_value=requirements,
):
with self.mock_python_version("3.9"):
with self.mock_installed_package(DummyDistribution("2.12.3")):
check_requirements()
with self.mock_installed_package(DummyDistribution("2.8.1")):
check_requirements()
with self.mock_installed_package(DummyDistribution("2.7.0")):
self.assertRaises(DependencyException, check_requirements)
with self.mock_python_version("3.14"):
with self.mock_installed_package(DummyDistribution("2.12.3")):
check_requirements()
with self.mock_installed_package(DummyDistribution("2.8.1")):
self.assertRaises(DependencyException, check_requirements)
with self.mock_installed_package(DummyDistribution("2.7.0")):
self.assertRaises(DependencyException, check_requirements)
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