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# -*- coding: utf-8 -*-
"""
tests.conftest
~~~~~~~~~~~~~~
:copyright: (c) 2014 by the Flask Team, see AUTHORS for more details.
:license: BSD, see LICENSE for more details.
"""
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import flask
import os
import sys
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import pkgutil
import pytest
import textwrap
@pytest.fixture
def test_apps(monkeypatch):
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monkeypatch.syspath_prepend(
os.path.abspath(os.path.join(
os.path.dirname(__file__), 'test_apps'))
)
@pytest.fixture(autouse=True)
def leak_detector(request):
def ensure_clean_request_context():
# make sure we're not leaking a request context since we are
# testing flask internally in debug mode in a few cases
leaks = []
while flask._request_ctx_stack.top is not None:
leaks.append(flask._request_ctx_stack.pop())
assert leaks == []
request.addfinalizer(ensure_clean_request_context)
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@pytest.fixture(params=(True, False))
def limit_loader(request, monkeypatch):
"""Patch pkgutil.get_loader to give loader without get_filename or archive.
This provides for tests where a system has custom loaders, e.g. Google App
Engine's HardenedModulesHook, which have neither the `get_filename` method
nor the `archive` attribute.
This fixture will run the testcase twice, once with and once without the
limitation/mock.
"""
if not request.param:
return
class LimitedLoader(object):
def __init__(self, loader):
self.loader = loader
def __getattr__(self, name):
if name in ('archive', 'get_filename'):
msg = 'Mocking a loader which does not have `%s.`' % name
raise AttributeError(msg)
return getattr(self.loader, name)
old_get_loader = pkgutil.get_loader
def get_loader(*args, **kwargs):
return LimitedLoader(old_get_loader(*args, **kwargs))
monkeypatch.setattr(pkgutil, 'get_loader', get_loader)
@pytest.fixture
def modules_tmpdir(tmpdir, monkeypatch):
'''A tmpdir added to sys.path'''
rv = tmpdir.mkdir('modules_tmpdir')
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monkeypatch.syspath_prepend(str(rv))
return rv
@pytest.fixture
def modules_tmpdir_prefix(modules_tmpdir, monkeypatch):
monkeypatch.setattr(sys, 'prefix', str(modules_tmpdir))
return modules_tmpdir
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@pytest.fixture
def site_packages(modules_tmpdir, monkeypatch):
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'''Create a fake site-packages'''
rv = modules_tmpdir \
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.mkdir('lib')\
.mkdir('python{x[0]}.{x[1]}'.format(x=sys.version_info))\
.mkdir('site-packages')
monkeypatch.syspath_prepend(str(rv))
return rv
@pytest.fixture
def install_egg(modules_tmpdir, monkeypatch):
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'''Generate egg from package name inside base and put the egg into
sys.path'''
def inner(name, base=modules_tmpdir):
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if not isinstance(name, str):
raise ValueError(name)
base.join(name).ensure_dir()
base.join(name).join('__init__.py').ensure()
egg_setup = base.join('setup.py')
egg_setup.write(textwrap.dedent("""
from setuptools import setup
setup(name='{0}',
version='1.0',
packages=['site_egg'],
zip_safe=True)
""".format(name)))
import subprocess
subprocess.check_call(
[sys.executable, 'setup.py', 'bdist_egg'],
cwd=str(modules_tmpdir)
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)
egg_path, = modules_tmpdir.join('dist/').listdir()
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monkeypatch.syspath_prepend(str(egg_path))
return egg_path
return inner
@pytest.fixture
def purge_module(request):
def inner(name):
request.addfinalizer(lambda: sys.modules.pop(name, None))
return inner
@pytest.fixture
def catch_deprecation_warnings():
import warnings
warnings.simplefilter('default', category=DeprecationWarning)
return lambda: warnings.catch_warnings(record=True)