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_test_compat.py
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_test_compat.py
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"""
Old implementation of ``./setup.py test`` command. This has been moved to
astropy.tests as of Astropy v1.1.0, but a copy of the implementation is kept
here for backwards compatibility.
"""
from __future__ import absolute_import, unicode_literals
import inspect
import os
import shutil
import subprocess
import sys
import tempfile
from setuptools import Command
from ..compat import _fix_user_options
PY3 = sys.version_info[0] == 3
class AstropyTest(Command, object):
description = 'Run the tests for this package'
user_options = [
('package=', 'P',
"The name of a specific package to test, e.g. 'io.fits' or 'utils'. "
"If nothing is specified, all default tests are run."),
('test-path=', 't',
'Specify a test location by path. If a relative path to a .py file, '
'it is relative to the built package, so e.g., a leading "astropy/" '
'is necessary. If a relative path to a .rst file, it is relative to '
'the directory *below* the --docs-path directory, so a leading '
'"docs/" is usually necessary. May also be an absolute path.'),
('verbose-results', 'V',
'Turn on verbose output from pytest.'),
('plugins=', 'p',
'Plugins to enable when running pytest.'),
('pastebin=', 'b',
"Enable pytest pastebin output. Either 'all' or 'failed'."),
('args=', 'a',
'Additional arguments to be passed to pytest.'),
('remote-data', 'R', 'Run tests that download remote data.'),
('pep8', '8',
'Enable PEP8 checking and disable regular tests. '
'Requires the pytest-pep8 plugin.'),
('pdb', 'd',
'Start the interactive Python debugger on errors.'),
('coverage', 'c',
'Create a coverage report. Requires the coverage package.'),
('open-files', 'o', 'Fail if any tests leave files open. Requires the '
'psutil package.'),
('parallel=', 'j',
'Run the tests in parallel on the specified number of '
'CPUs. If negative, all the cores on the machine will be '
'used. Requires the pytest-xdist plugin.'),
('docs-path=', None,
'The path to the documentation .rst files. If not provided, and '
'the current directory contains a directory called "docs", that '
'will be used.'),
('skip-docs', None,
"Don't test the documentation .rst files."),
('repeat=', None,
'How many times to repeat each test (can be used to check for '
'sporadic failures).'),
('temp-root=', None,
'The root directory in which to create the temporary testing files. '
'If unspecified the system default is used (e.g. /tmp) as explained '
'in the documentation for tempfile.mkstemp.')
]
user_options = _fix_user_options(user_options)
package_name = ''
def initialize_options(self):
self.package = None
self.test_path = None
self.verbose_results = False
self.plugins = None
self.pastebin = None
self.args = None
self.remote_data = False
self.pep8 = False
self.pdb = False
self.coverage = False
self.open_files = False
self.parallel = 0
self.docs_path = None
self.skip_docs = False
self.repeat = None
self.temp_root = None
def finalize_options(self):
# Normally we would validate the options here, but that's handled in
# run_tests
pass
def generate_testing_command(self):
"""
Build a Python script to run the tests.
"""
cmd_pre = '' # Commands to run before the test function
cmd_post = '' # Commands to run after the test function
if self.coverage:
pre, post = self._generate_coverage_commands()
cmd_pre += pre
cmd_post += post
test_args = filter(lambda arg: hasattr(self, arg),
self._get_test_runner_args())
test_args = ', '.join('{0}={1!r}'.format(arg, getattr(self, arg))
for arg in test_args)
if PY3:
set_flag = "import builtins; builtins._ASTROPY_TEST_ = True"
else:
set_flag = "import __builtin__; __builtin__._ASTROPY_TEST_ = True"
cmd = ('{cmd_pre}{0}; import {1.package_name}, sys; result = '
'{1.package_name}.test({test_args}); {cmd_post}'
'sys.exit(result)')
return cmd.format(set_flag, self, cmd_pre=cmd_pre,
cmd_post=cmd_post, test_args=test_args)
def _validate_required_deps(self):
"""
This method checks that any required modules are installed before
running the tests.
"""
try:
import astropy
except ImportError:
raise ImportError(
"The 'test' command requires the astropy package to be "
"installed and importable.")
def run(self):
"""
Run the tests!
"""
# Ensure there is a doc path
if self.docs_path is None:
if os.path.exists('docs'):
self.docs_path = os.path.abspath('docs')
# Build a testing install of the package
self._build_temp_install()
# Ensure all required packages are installed
self._validate_required_deps()
# Run everything in a try: finally: so that the tmp dir gets deleted.
try:
# Construct this modules testing command
cmd = self.generate_testing_command()
# Run the tests in a subprocess--this is necessary since
# new extension modules may have appeared, and this is the
# easiest way to set up a new environment
# On Python 3.x prior to 3.3, the creation of .pyc files
# is not atomic. py.test jumps through some hoops to make
# this work by parsing import statements and carefully
# importing files atomically. However, it can't detect
# when __import__ is used, so its carefulness still fails.
# The solution here (admittedly a bit of a hack), is to
# turn off the generation of .pyc files altogether by
# passing the `-B` switch to `python`. This does mean
# that each core will have to compile .py file to bytecode
# itself, rather than getting lucky and borrowing the work
# already done by another core. Compilation is an
# insignificant fraction of total testing time, though, so
# it's probably not worth worrying about.
retcode = subprocess.call([sys.executable, '-B', '-c', cmd],
cwd=self.testing_path, close_fds=False)
finally:
# Remove temporary directory
shutil.rmtree(self.tmp_dir)
raise SystemExit(retcode)
def _build_temp_install(self):
"""
Build the package and copy the build to a temporary directory for
the purposes of testing this avoids creating pyc and __pycache__
directories inside the build directory
"""
self.reinitialize_command('build', inplace=True)
self.run_command('build')
build_cmd = self.get_finalized_command('build')
new_path = os.path.abspath(build_cmd.build_lib)
self.tmp_dir = tempfile.mkdtemp(prefix=self.package_name + '-test-',
dir=self.temp_root)
self.testing_path = os.path.join(self.tmp_dir, os.path.basename(new_path))
shutil.copytree(new_path, self.testing_path)
new_docs_path = os.path.join(self.tmp_dir,
os.path.basename(self.docs_path))
shutil.copytree(self.docs_path, new_docs_path)
self.docs_path = new_docs_path
shutil.copy('setup.cfg', self.tmp_dir)
def _generate_coverage_commands(self):
"""
This method creates the post and pre commands if coverage is to be
generated
"""
if self.parallel != 0:
raise ValueError(
"--coverage can not be used with --parallel")
try:
import coverage
except ImportError:
raise ImportError(
"--coverage requires that the coverage package is "
"installed.")
# Don't use get_pkg_data_filename here, because it
# requires importing astropy.config and thus screwing
# up coverage results for those packages.
coveragerc = os.path.join(
self.testing_path, self.package_name, 'tests', 'coveragerc')
# We create a coveragerc that is specific to the version
# of Python we're running, so that we can mark branches
# as being specifically for Python 2 or Python 3
with open(coveragerc, 'r') as fd:
coveragerc_content = fd.read()
if PY3:
ignore_python_version = '2'
else:
ignore_python_version = '3'
coveragerc_content = coveragerc_content.replace(
"{ignore_python_version}", ignore_python_version).replace(
"{packagename}", self.package_name)
tmp_coveragerc = os.path.join(self.tmp_dir, 'coveragerc')
with open(tmp_coveragerc, 'wb') as tmp:
tmp.write(coveragerc_content.encode('utf-8'))
cmd_pre = (
'import coverage; '
'cov = coverage.coverage(data_file="{0}", config_file="{1}"); '
'cov.start();'.format(
os.path.abspath(".coverage"), tmp_coveragerc))
cmd_post = (
'cov.stop(); '
'from astropy.tests.helper import _save_coverage; '
'_save_coverage(cov, result, "{0}", "{1}");'.format(
os.path.abspath('.'), self.testing_path))
return cmd_pre, cmd_post
def _get_test_runner_args(self):
"""
A hack to determine what arguments are supported by the package's
test() function. In the future there should be a more straightforward
API to determine this (really it should be determined by the
``TestRunner`` class for whatever version of Astropy is in use).
"""
if PY3:
import builtins
builtins._ASTROPY_TEST_ = True
else:
import __builtin__
__builtin__._ASTROPY_TEST_ = True
try:
pkg = __import__(self.package_name)
if not hasattr(pkg, 'test'):
raise ImportError(
'package {0} does not have a {0}.test() function as '
'required by the Astropy test runner'.format(package_name))
argspec = inspect.getargspec(pkg.test)
return argspec.args
finally:
if PY3:
del builtins._ASTROPY_TEST_
else:
del __builtin__._ASTROPY_TEST_