mirror of https://github.com/pallets/flask.git
313 lines
12 KiB
Python
313 lines
12 KiB
Python
# -*- coding: utf-8 -*-
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"""
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flask.testsuite.config
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~~~~~~~~~~~~~~~~~~~~~~
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Configuration and instances.
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:copyright: (c) 2011 by Armin Ronacher.
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:license: BSD, see LICENSE for more details.
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"""
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import os
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import sys
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import flask
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import pkgutil
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import unittest
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from contextlib import contextmanager
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from flask.testsuite import FlaskTestCase
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from flask._compat import PY2
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# config keys used for the ConfigTestCase
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TEST_KEY = 'foo'
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SECRET_KEY = 'devkey'
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class ConfigTestCase(FlaskTestCase):
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def common_object_test(self, app):
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self.assert_equal(app.secret_key, 'devkey')
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self.assert_equal(app.config['TEST_KEY'], 'foo')
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self.assert_not_in('ConfigTestCase', app.config)
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def test_config_from_file(self):
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app = flask.Flask(__name__)
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app.config.from_pyfile(__file__.rsplit('.', 1)[0] + '.py')
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self.common_object_test(app)
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def test_config_from_object(self):
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app = flask.Flask(__name__)
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app.config.from_object(__name__)
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self.common_object_test(app)
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def test_config_from_class(self):
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class Base(object):
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TEST_KEY = 'foo'
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class Test(Base):
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SECRET_KEY = 'devkey'
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app = flask.Flask(__name__)
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app.config.from_object(Test)
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self.common_object_test(app)
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def test_config_from_envvar(self):
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env = os.environ
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try:
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os.environ = {}
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app = flask.Flask(__name__)
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try:
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app.config.from_envvar('FOO_SETTINGS')
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except RuntimeError as e:
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self.assert_true("'FOO_SETTINGS' is not set" in str(e))
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else:
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self.assert_true(0, 'expected exception')
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self.assert_false(app.config.from_envvar('FOO_SETTINGS', silent=True))
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os.environ = {'FOO_SETTINGS': __file__.rsplit('.', 1)[0] + '.py'}
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self.assert_true(app.config.from_envvar('FOO_SETTINGS'))
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self.common_object_test(app)
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finally:
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os.environ = env
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def test_config_from_envvar_missing(self):
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env = os.environ
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try:
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os.environ = {'FOO_SETTINGS': 'missing.cfg'}
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try:
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app = flask.Flask(__name__)
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app.config.from_envvar('FOO_SETTINGS')
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except IOError as e:
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msg = str(e)
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self.assert_true(msg.startswith('[Errno 2] Unable to load configuration '
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'file (No such file or directory):'))
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self.assert_true(msg.endswith("missing.cfg'"))
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else:
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self.fail('expected IOError')
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self.assertFalse(app.config.from_envvar('FOO_SETTINGS', silent=True))
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finally:
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os.environ = env
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def test_config_missing(self):
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app = flask.Flask(__name__)
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try:
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app.config.from_pyfile('missing.cfg')
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except IOError as e:
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msg = str(e)
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self.assert_true(msg.startswith('[Errno 2] Unable to load configuration '
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'file (No such file or directory):'))
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self.assert_true(msg.endswith("missing.cfg'"))
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else:
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self.assert_true(0, 'expected config')
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self.assert_false(app.config.from_pyfile('missing.cfg', silent=True))
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def test_session_lifetime(self):
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app = flask.Flask(__name__)
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app.config['PERMANENT_SESSION_LIFETIME'] = 42
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self.assert_equal(app.permanent_session_lifetime.seconds, 42)
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class LimitedLoaderMockWrapper(object):
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def __init__(self, loader):
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self.loader = loader
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def __getattr__(self, name):
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if name in ('archive', 'get_filename'):
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msg = 'Mocking a loader which does not have `%s.`' % name
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raise AttributeError(msg)
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return getattr(self.loader, name)
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@contextmanager
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def patch_pkgutil_get_loader(wrapper_class=LimitedLoaderMockWrapper):
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"""Patch pkgutil.get_loader to give loader without get_filename or archive.
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This provides for tests where a system has custom loaders, e.g. Google App
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Engine's HardenedModulesHook, which have neither the `get_filename` method
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nor the `archive` attribute.
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"""
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old_get_loader = pkgutil.get_loader
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def get_loader(*args, **kwargs):
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return wrapper_class(old_get_loader(*args, **kwargs))
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try:
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pkgutil.get_loader = get_loader
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yield
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finally:
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pkgutil.get_loader = old_get_loader
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class InstanceTestCase(FlaskTestCase):
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def test_explicit_instance_paths(self):
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here = os.path.abspath(os.path.dirname(__file__))
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try:
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flask.Flask(__name__, instance_path='instance')
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except ValueError as e:
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self.assert_in('must be absolute', str(e))
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else:
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self.fail('Expected value error')
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app = flask.Flask(__name__, instance_path=here)
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self.assert_equal(app.instance_path, here)
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def test_main_module_paths(self):
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# Test an app with '__main__' as the import name, uses cwd.
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from main_app import app
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here = os.path.abspath(os.getcwd())
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self.assert_equal(app.instance_path, os.path.join(here, 'instance'))
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if 'main_app' in sys.modules:
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del sys.modules['main_app']
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def test_uninstalled_module_paths(self):
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from config_module_app import app
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here = os.path.abspath(os.path.dirname(__file__))
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self.assert_equal(app.instance_path, os.path.join(here, 'test_apps', 'instance'))
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def test_uninstalled_package_paths(self):
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from config_package_app import app
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here = os.path.abspath(os.path.dirname(__file__))
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self.assert_equal(app.instance_path, os.path.join(here, 'test_apps', 'instance'))
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def test_installed_module_paths(self):
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here = os.path.abspath(os.path.dirname(__file__))
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expected_prefix = os.path.join(here, 'test_apps')
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real_prefix, sys.prefix = sys.prefix, expected_prefix
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site_packages = os.path.join(expected_prefix, 'lib', 'python2.5', 'site-packages')
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sys.path.append(site_packages)
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try:
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import site_app
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self.assert_equal(site_app.app.instance_path,
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os.path.join(expected_prefix, 'var',
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'site_app-instance'))
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finally:
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sys.prefix = real_prefix
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sys.path.remove(site_packages)
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if 'site_app' in sys.modules:
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del sys.modules['site_app']
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def test_installed_module_paths_with_limited_loader(self):
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here = os.path.abspath(os.path.dirname(__file__))
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expected_prefix = os.path.join(here, 'test_apps')
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real_prefix, sys.prefix = sys.prefix, expected_prefix
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site_packages = os.path.join(expected_prefix, 'lib', 'python2.5', 'site-packages')
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sys.path.append(site_packages)
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with patch_pkgutil_get_loader():
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try:
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import site_app
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self.assert_equal(site_app.app.instance_path,
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os.path.join(expected_prefix, 'var',
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'site_app-instance'))
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finally:
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sys.prefix = real_prefix
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sys.path.remove(site_packages)
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if 'site_app' in sys.modules:
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del sys.modules['site_app']
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def test_installed_package_paths(self):
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here = os.path.abspath(os.path.dirname(__file__))
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expected_prefix = os.path.join(here, 'test_apps')
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real_prefix, sys.prefix = sys.prefix, expected_prefix
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installed_path = os.path.join(expected_prefix, 'path')
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sys.path.append(installed_path)
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try:
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import installed_package
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self.assert_equal(installed_package.app.instance_path,
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os.path.join(expected_prefix, 'var',
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'installed_package-instance'))
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finally:
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sys.prefix = real_prefix
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sys.path.remove(installed_path)
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if 'installed_package' in sys.modules:
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del sys.modules['installed_package']
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def test_installed_package_paths_with_limited_loader(self):
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here = os.path.abspath(os.path.dirname(__file__))
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expected_prefix = os.path.join(here, 'test_apps')
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real_prefix, sys.prefix = sys.prefix, expected_prefix
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installed_path = os.path.join(expected_prefix, 'path')
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sys.path.append(installed_path)
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with patch_pkgutil_get_loader():
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try:
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import installed_package
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self.assert_equal(installed_package.app.instance_path,
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os.path.join(expected_prefix, 'var',
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'installed_package-instance'))
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finally:
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sys.prefix = real_prefix
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sys.path.remove(installed_path)
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if 'installed_package' in sys.modules:
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del sys.modules['installed_package']
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def test_prefix_package_paths(self):
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here = os.path.abspath(os.path.dirname(__file__))
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expected_prefix = os.path.join(here, 'test_apps')
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real_prefix, sys.prefix = sys.prefix, expected_prefix
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site_packages = os.path.join(expected_prefix, 'lib', 'python2.5', 'site-packages')
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sys.path.append(site_packages)
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try:
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import site_package
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self.assert_equal(site_package.app.instance_path,
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os.path.join(expected_prefix, 'var',
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'site_package-instance'))
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finally:
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sys.prefix = real_prefix
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sys.path.remove(site_packages)
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if 'site_package' in sys.modules:
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del sys.modules['site_package']
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def test_prefix_package_paths_with_limited_loader(self):
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here = os.path.abspath(os.path.dirname(__file__))
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expected_prefix = os.path.join(here, 'test_apps')
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real_prefix, sys.prefix = sys.prefix, expected_prefix
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site_packages = os.path.join(expected_prefix, 'lib', 'python2.5', 'site-packages')
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sys.path.append(site_packages)
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with patch_pkgutil_get_loader():
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try:
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import site_package
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self.assert_equal(site_package.app.instance_path,
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os.path.join(expected_prefix, 'var',
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'site_package-instance'))
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finally:
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sys.prefix = real_prefix
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sys.path.remove(site_packages)
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if 'site_package' in sys.modules:
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del sys.modules['site_package']
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def test_egg_installed_paths(self):
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here = os.path.abspath(os.path.dirname(__file__))
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expected_prefix = os.path.join(here, 'test_apps')
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real_prefix, sys.prefix = sys.prefix, expected_prefix
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site_packages = os.path.join(expected_prefix, 'lib', 'python2.5', 'site-packages')
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egg_path = os.path.join(site_packages, 'SiteEgg.egg')
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sys.path.append(site_packages)
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sys.path.append(egg_path)
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try:
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import site_egg # in SiteEgg.egg
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self.assert_equal(site_egg.app.instance_path,
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os.path.join(expected_prefix, 'var',
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'site_egg-instance'))
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finally:
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sys.prefix = real_prefix
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sys.path.remove(site_packages)
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sys.path.remove(egg_path)
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if 'site_egg' in sys.modules:
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del sys.modules['site_egg']
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if PY2:
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def test_meta_path_loader_without_is_package(self):
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class Loader(object):
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def find_module(self, name):
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return self
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sys.meta_path.append(Loader())
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try:
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with self.assert_raises(AttributeError):
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flask.Flask(__name__)
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finally:
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sys.meta_path.pop()
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def suite():
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suite = unittest.TestSuite()
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suite.addTest(unittest.makeSuite(ConfigTestCase))
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suite.addTest(unittest.makeSuite(InstanceTestCase))
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return suite
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