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# -*- coding: utf-8 -*-
"""
flask.testsuite.config
~~~~~~~~~~~~~~~~~~~~~~
Configuration and instances.
:copyright: (c) 2011 by Armin Ronacher.
:license: BSD, see LICENSE for more details.
"""
from __future__ import with_statement
import os
import sys
import flask
import pkgutil
import unittest
from contextlib import contextmanager
from flask.testsuite import FlaskTestCase
# config keys used for the ConfigTestCase
TEST_KEY = 'foo'
SECRET_KEY = 'devkey'
class ConfigTestCase(FlaskTestCase):
def common_object_test(self, app):
self.assert_equal(app.secret_key, 'devkey')
self.assert_equal(app.config['TEST_KEY'], 'foo')
self.assert_('ConfigTestCase' not in app.config)
def test_config_from_file(self):
app = flask.Flask(__name__)
app.config.from_pyfile(__file__.rsplit('.', 1)[0] + '.py')
self.common_object_test(app)
def test_config_from_object(self):
app = flask.Flask(__name__)
app.config.from_object(__name__)
self.common_object_test(app)
def test_config_from_class(self):
class Base(object):
TEST_KEY = 'foo'
class Test(Base):
SECRET_KEY = 'devkey'
app = flask.Flask(__name__)
app.config.from_object(Test)
self.common_object_test(app)
def test_config_from_envvar(self):
env = os.environ
try:
os.environ = {}
app = flask.Flask(__name__)
try:
app.config.from_envvar('FOO_SETTINGS')
except RuntimeError, e:
self.assert_("'FOO_SETTINGS' is not set" in str(e))
else:
self.assert_(0, 'expected exception')
self.assert_(not app.config.from_envvar('FOO_SETTINGS', silent=True))
os.environ = {'FOO_SETTINGS': __file__.rsplit('.', 1)[0] + '.py'}
self.assert_(app.config.from_envvar('FOO_SETTINGS'))
self.common_object_test(app)
finally:
os.environ = env
def test_config_from_envvar_missing(self):
env = os.environ
try:
os.environ = {'FOO_SETTINGS': 'missing.cfg'}
try:
app = flask.Flask(__name__)
app.config.from_envvar('FOO_SETTINGS')
except IOError, e:
msg = str(e)
self.assert_(msg.startswith('[Errno 2] Unable to load configuration '
'file (No such file or directory):'))
self.assert_(msg.endswith("missing.cfg'"))
else:
self.fail('expected IOError')
self.assertFalse(app.config.from_envvar('FOO_SETTINGS', silent=True))
finally:
os.environ = env
def test_config_missing(self):
app = flask.Flask(__name__)
try:
app.config.from_pyfile('missing.cfg')
except IOError, e:
msg = str(e)
self.assert_(msg.startswith('[Errno 2] Unable to load configuration '
'file (No such file or directory):'))
self.assert_(msg.endswith("missing.cfg'"))
else:
self.assert_(0, 'expected config')
self.assert_(not app.config.from_pyfile('missing.cfg', silent=True))
def test_session_lifetime(self):
app = flask.Flask(__name__)
app.config['PERMANENT_SESSION_LIFETIME'] = 42
self.assert_equal(app.permanent_session_lifetime.seconds, 42)
class LimitedLoaderMockWrapper(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)
@contextmanager
def patch_pkgutil_get_loader(wrapper_class=LimitedLoaderMockWrapper):
"""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.
"""
old_get_loader = pkgutil.get_loader
def get_loader(*args, **kwargs):
return wrapper_class(old_get_loader(*args, **kwargs))
try:
pkgutil.get_loader = get_loader
yield
finally:
pkgutil.get_loader = old_get_loader
class InstanceTestCase(FlaskTestCase):
def test_explicit_instance_paths(self):
here = os.path.abspath(os.path.dirname(__file__))
try:
flask.Flask(__name__, instance_path='instance')
except ValueError, e:
self.assert_('must be absolute' in str(e))
else:
self.fail('Expected value error')
app = flask.Flask(__name__, instance_path=here)
self.assert_equal(app.instance_path, here)
def test_main_module_paths(self):
# Test an app with '__main__' as the import name, uses cwd.
from main_app import app
here = os.path.abspath(os.getcwd())
self.assert_equal(app.instance_path, os.path.join(here, 'instance'))
if 'main_app' in sys.modules:
del sys.modules['main_app']
def test_uninstalled_module_paths(self):
from config_module_app import app
here = os.path.abspath(os.path.dirname(__file__))
self.assert_equal(app.instance_path, os.path.join(here, 'test_apps', 'instance'))
def test_uninstalled_package_paths(self):
from config_package_app import app
here = os.path.abspath(os.path.dirname(__file__))
self.assert_equal(app.instance_path, os.path.join(here, 'test_apps', 'instance'))
def test_installed_module_paths(self):
here = os.path.abspath(os.path.dirname(__file__))
expected_prefix = os.path.join(here, 'test_apps')
real_prefix, sys.prefix = sys.prefix, expected_prefix
site_packages = os.path.join(expected_prefix, 'lib', 'python2.5', 'site-packages')
sys.path.append(site_packages)
try:
import site_app
self.assert_equal(site_app.app.instance_path,
os.path.join(expected_prefix, 'var',
'site_app-instance'))
finally:
sys.prefix = real_prefix
sys.path.remove(site_packages)
if 'site_app' in sys.modules:
del sys.modules['site_app']
def test_installed_module_paths_with_limited_loader(self):
here = os.path.abspath(os.path.dirname(__file__))
expected_prefix = os.path.join(here, 'test_apps')
real_prefix, sys.prefix = sys.prefix, expected_prefix
site_packages = os.path.join(expected_prefix, 'lib', 'python2.5', 'site-packages')
sys.path.append(site_packages)
with patch_pkgutil_get_loader():
try:
import site_app
self.assert_equal(site_app.app.instance_path,
os.path.join(expected_prefix, 'var',
'site_app-instance'))
finally:
sys.prefix = real_prefix
sys.path.remove(site_packages)
if 'site_app' in sys.modules:
del sys.modules['site_app']
def test_installed_package_paths(self):
here = os.path.abspath(os.path.dirname(__file__))
expected_prefix = os.path.join(here, 'test_apps')
real_prefix, sys.prefix = sys.prefix, expected_prefix
installed_path = os.path.join(expected_prefix, 'path')
sys.path.append(installed_path)
try:
import installed_package
self.assert_equal(installed_package.app.instance_path,
os.path.join(expected_prefix, 'var',
'installed_package-instance'))
finally:
sys.prefix = real_prefix
sys.path.remove(installed_path)
if 'installed_package' in sys.modules:
del sys.modules['installed_package']
def test_installed_package_paths_with_limited_loader(self):
here = os.path.abspath(os.path.dirname(__file__))
expected_prefix = os.path.join(here, 'test_apps')
real_prefix, sys.prefix = sys.prefix, expected_prefix
installed_path = os.path.join(expected_prefix, 'path')
sys.path.append(installed_path)
with patch_pkgutil_get_loader():
try:
import installed_package
self.assert_equal(installed_package.app.instance_path,
os.path.join(expected_prefix, 'var',
'installed_package-instance'))
finally:
sys.prefix = real_prefix
sys.path.remove(installed_path)
if 'installed_package' in sys.modules:
del sys.modules['installed_package']
def test_prefix_package_paths(self):
here = os.path.abspath(os.path.dirname(__file__))
expected_prefix = os.path.join(here, 'test_apps')
real_prefix, sys.prefix = sys.prefix, expected_prefix
site_packages = os.path.join(expected_prefix, 'lib', 'python2.5', 'site-packages')
sys.path.append(site_packages)
try:
import site_package
self.assert_equal(site_package.app.instance_path,
os.path.join(expected_prefix, 'var',
'site_package-instance'))
finally:
sys.prefix = real_prefix
sys.path.remove(site_packages)
if 'site_package' in sys.modules:
del sys.modules['site_package']
def test_prefix_package_paths_with_limited_loader(self):
here = os.path.abspath(os.path.dirname(__file__))
expected_prefix = os.path.join(here, 'test_apps')
real_prefix, sys.prefix = sys.prefix, expected_prefix
site_packages = os.path.join(expected_prefix, 'lib', 'python2.5', 'site-packages')
sys.path.append(site_packages)
with patch_pkgutil_get_loader():
try:
import site_package
self.assert_equal(site_package.app.instance_path,
os.path.join(expected_prefix, 'var',
'site_package-instance'))
finally:
sys.prefix = real_prefix
sys.path.remove(site_packages)
if 'site_package' in sys.modules:
del sys.modules['site_package']
def test_egg_installed_paths(self):
here = os.path.abspath(os.path.dirname(__file__))
expected_prefix = os.path.join(here, 'test_apps')
real_prefix, sys.prefix = sys.prefix, expected_prefix
site_packages = os.path.join(expected_prefix, 'lib', 'python2.5', 'site-packages')
egg_path = os.path.join(site_packages, 'SiteEgg.egg')
sys.path.append(site_packages)
sys.path.append(egg_path)
try:
import site_egg # in SiteEgg.egg
self.assert_equal(site_egg.app.instance_path,
os.path.join(expected_prefix, 'var',
'site_egg-instance'))
finally:
sys.prefix = real_prefix
sys.path.remove(site_packages)
sys.path.remove(egg_path)
if 'site_egg' in sys.modules:
del sys.modules['site_egg']
def suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(ConfigTestCase))
suite.addTest(unittest.makeSuite(InstanceTestCase))
return suite
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