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# Copyright 2022 The Matrix.org Foundation C.I.C.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from contextlib import contextmanager
from os import PathLike
from typing import Generator, Optional, Union
from unittest.mock import patch
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: Union[str, PathLike]) -> PathLike:
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: Optional[DummyDistribution]
) -> 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
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()
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