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from contextlib import contextmanager
from setuptools import Command, SetuptoolsDeprecationWarning
from setuptools.dist import Distribution
from setuptools.command.build import build
from distutils.command.build import build as distutils_build
import pytest
def test_distribution_gives_setuptools_build_obj(tmpdir_cwd):
"""
Check that the setuptools Distribution uses the
setuptools specific build object.
"""
dist = Distribution(dict(
script_name='setup.py',
script_args=['build'],
packages=[],
package_data={'': ['path/*']},
))
assert isinstance(dist.get_command_obj("build"), build)
@contextmanager
def _restore_sub_commands():
orig = distutils_build.sub_commands[:]
try:
yield
finally:
distutils_build.sub_commands = orig
class Subcommand(Command):
"""Dummy command to be used in tests"""
def initialize_options(self):
pass
def finalize_options(self):
pass
def run(self):
raise NotImplementedError("just to check if the command runs")
@_restore_sub_commands()
def test_subcommand_in_distutils(tmpdir_cwd):
"""
Ensure that sub commands registered in ``distutils`` run,
after instructing the users to migrate to ``setuptools``.
"""
dist = Distribution(dict(
packages=[],
cmdclass={'subcommand': Subcommand},
))
distutils_build.sub_commands.append(('subcommand', None))
warning_msg = "please use .setuptools.command.build."
with pytest.warns(SetuptoolsDeprecationWarning, match=warning_msg):
# For backward compatibility, the subcommand should run anyway:
with pytest.raises(NotImplementedError, match="the command runs"):
dist.run_command("build")
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