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flask/tests/test_blueprints.py

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# -*- coding: utf-8 -*-
"""
tests.blueprints
~~~~~~~~~~~~~~~~~~~~~~~~~~
Blueprints (and currently modules)
:copyright: (c) 2014 by Armin Ronacher.
:license: BSD, see LICENSE for more details.
"""
import flask
import unittest
from tests import FlaskTestCase
from flask._compat import text_type
from werkzeug.http import parse_cache_control_header
from jinja2 import TemplateNotFound
class BlueprintTestCase(FlaskTestCase):
def test_blueprint_specific_error_handling(self):
frontend = flask.Blueprint('frontend', __name__)
backend = flask.Blueprint('backend', __name__)
sideend = flask.Blueprint('sideend', __name__)
@frontend.errorhandler(403)
def frontend_forbidden(e):
return 'frontend says no', 403
@frontend.route('/frontend-no')
def frontend_no():
flask.abort(403)
@backend.errorhandler(403)
def backend_forbidden(e):
return 'backend says no', 403
@backend.route('/backend-no')
def backend_no():
flask.abort(403)
@sideend.route('/what-is-a-sideend')
def sideend_no():
flask.abort(403)
app = flask.Flask(__name__)
app.register_blueprint(frontend)
app.register_blueprint(backend)
app.register_blueprint(sideend)
@app.errorhandler(403)
def app_forbidden(e):
return 'application itself says no', 403
c = app.test_client()
self.assert_equal(c.get('/frontend-no').data, b'frontend says no')
self.assert_equal(c.get('/backend-no').data, b'backend says no')
self.assert_equal(c.get('/what-is-a-sideend').data, b'application itself says no')
def test_blueprint_specific_user_error_handling(self):
class MyDecoratorException(Exception):
pass
class MyFunctionException(Exception):
pass
blue = flask.Blueprint('blue', __name__)
@blue.errorhandler(MyDecoratorException)
def my_decorator_exception_handler(e):
self.assert_true(isinstance(e, MyDecoratorException))
return 'boom'
def my_function_exception_handler(e):
self.assert_true(isinstance(e, MyFunctionException))
return 'bam'
blue.register_error_handler(MyFunctionException, my_function_exception_handler)
@blue.route('/decorator')
def blue_deco_test():
raise MyDecoratorException()
@blue.route('/function')
def blue_func_test():
raise MyFunctionException()
app = flask.Flask(__name__)
app.register_blueprint(blue)
c = app.test_client()
self.assert_equal(c.get('/decorator').data, b'boom')
self.assert_equal(c.get('/function').data, b'bam')
def test_blueprint_url_definitions(self):
bp = flask.Blueprint('test', __name__)
@bp.route('/foo', defaults={'baz': 42})
def foo(bar, baz):
return '%s/%d' % (bar, baz)
@bp.route('/bar')
def bar(bar):
return text_type(bar)
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/1', url_defaults={'bar': 23})
app.register_blueprint(bp, url_prefix='/2', url_defaults={'bar': 19})
c = app.test_client()
self.assert_equal(c.get('/1/foo').data, b'23/42')
self.assert_equal(c.get('/2/foo').data, b'19/42')
self.assert_equal(c.get('/1/bar').data, b'23')
self.assert_equal(c.get('/2/bar').data, b'19')
def test_blueprint_url_processors(self):
bp = flask.Blueprint('frontend', __name__, url_prefix='/<lang_code>')
@bp.url_defaults
def add_language_code(endpoint, values):
values.setdefault('lang_code', flask.g.lang_code)
@bp.url_value_preprocessor
def pull_lang_code(endpoint, values):
flask.g.lang_code = values.pop('lang_code')
@bp.route('/')
def index():
return flask.url_for('.about')
@bp.route('/about')
def about():
return flask.url_for('.index')
app = flask.Flask(__name__)
app.register_blueprint(bp)
c = app.test_client()
self.assert_equal(c.get('/de/').data, b'/de/about')
self.assert_equal(c.get('/de/about').data, b'/de/')
def test_templates_and_static(self):
from blueprintapp import app
c = app.test_client()
rv = c.get('/')
self.assert_equal(rv.data, b'Hello from the Frontend')
rv = c.get('/admin/')
self.assert_equal(rv.data, b'Hello from the Admin')
rv = c.get('/admin/index2')
self.assert_equal(rv.data, b'Hello from the Admin')
rv = c.get('/admin/static/test.txt')
self.assert_equal(rv.data.strip(), b'Admin File')
rv.close()
rv = c.get('/admin/static/css/test.css')
self.assert_equal(rv.data.strip(), b'/* nested file */')
rv.close()
# try/finally, in case other tests use this app for Blueprint tests.
max_age_default = app.config['SEND_FILE_MAX_AGE_DEFAULT']
try:
expected_max_age = 3600
if app.config['SEND_FILE_MAX_AGE_DEFAULT'] == expected_max_age:
expected_max_age = 7200
app.config['SEND_FILE_MAX_AGE_DEFAULT'] = expected_max_age
rv = c.get('/admin/static/css/test.css')
cc = parse_cache_control_header(rv.headers['Cache-Control'])
self.assert_equal(cc.max_age, expected_max_age)
rv.close()
finally:
app.config['SEND_FILE_MAX_AGE_DEFAULT'] = max_age_default
with app.test_request_context():
self.assert_equal(flask.url_for('admin.static', filename='test.txt'),
'/admin/static/test.txt')
with app.test_request_context():
try:
flask.render_template('missing.html')
except TemplateNotFound as e:
self.assert_equal(e.name, 'missing.html')
else:
self.assert_true(0, 'expected exception')
with flask.Flask(__name__).test_request_context():
self.assert_equal(flask.render_template('nested/nested.txt'), 'I\'m nested')
def test_default_static_cache_timeout(self):
app = flask.Flask(__name__)
class MyBlueprint(flask.Blueprint):
def get_send_file_max_age(self, filename):
return 100
blueprint = MyBlueprint('blueprint', __name__, static_folder='static')
app.register_blueprint(blueprint)
# try/finally, in case other tests use this app for Blueprint tests.
max_age_default = app.config['SEND_FILE_MAX_AGE_DEFAULT']
try:
with app.test_request_context():
unexpected_max_age = 3600
if app.config['SEND_FILE_MAX_AGE_DEFAULT'] == unexpected_max_age:
unexpected_max_age = 7200
app.config['SEND_FILE_MAX_AGE_DEFAULT'] = unexpected_max_age
rv = blueprint.send_static_file('index.html')
cc = parse_cache_control_header(rv.headers['Cache-Control'])
self.assert_equal(cc.max_age, 100)
rv.close()
finally:
app.config['SEND_FILE_MAX_AGE_DEFAULT'] = max_age_default
def test_templates_list(self):
from blueprintapp import app
templates = sorted(app.jinja_env.list_templates())
self.assert_equal(templates, ['admin/index.html',
'frontend/index.html'])
def test_dotted_names(self):
frontend = flask.Blueprint('myapp.frontend', __name__)
backend = flask.Blueprint('myapp.backend', __name__)
@frontend.route('/fe')
def frontend_index():
return flask.url_for('myapp.backend.backend_index')
@frontend.route('/fe2')
def frontend_page2():
return flask.url_for('.frontend_index')
@backend.route('/be')
def backend_index():
return flask.url_for('myapp.frontend.frontend_index')
app = flask.Flask(__name__)
app.register_blueprint(frontend)
app.register_blueprint(backend)
c = app.test_client()
self.assert_equal(c.get('/fe').data.strip(), b'/be')
self.assert_equal(c.get('/fe2').data.strip(), b'/fe')
self.assert_equal(c.get('/be').data.strip(), b'/fe')
def test_dotted_names_from_app(self):
app = flask.Flask(__name__)
app.testing = True
test = flask.Blueprint('test', __name__)
@app.route('/')
def app_index():
return flask.url_for('test.index')
@test.route('/test/')
def index():
return flask.url_for('app_index')
app.register_blueprint(test)
with app.test_client() as c:
rv = c.get('/')
self.assert_equal(rv.data, b'/test/')
def test_empty_url_defaults(self):
bp = flask.Blueprint('bp', __name__)
@bp.route('/', defaults={'page': 1})
@bp.route('/page/<int:page>')
def something(page):
return str(page)
app = flask.Flask(__name__)
app.register_blueprint(bp)
c = app.test_client()
self.assert_equal(c.get('/').data, b'1')
self.assert_equal(c.get('/page/2').data, b'2')
def test_route_decorator_custom_endpoint(self):
bp = flask.Blueprint('bp', __name__)
@bp.route('/foo')
def foo():
return flask.request.endpoint
@bp.route('/bar', endpoint='bar')
def foo_bar():
return flask.request.endpoint
@bp.route('/bar/123', endpoint='123')
def foo_bar_foo():
return flask.request.endpoint
@bp.route('/bar/foo')
def bar_foo():
return flask.request.endpoint
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/py')
@app.route('/')
def index():
return flask.request.endpoint
c = app.test_client()
self.assertEqual(c.get('/').data, b'index')
self.assertEqual(c.get('/py/foo').data, b'bp.foo')
self.assertEqual(c.get('/py/bar').data, b'bp.bar')
self.assertEqual(c.get('/py/bar/123').data, b'bp.123')
self.assertEqual(c.get('/py/bar/foo').data, b'bp.bar_foo')
def test_route_decorator_custom_endpoint_with_dots(self):
bp = flask.Blueprint('bp', __name__)
@bp.route('/foo')
def foo():
return flask.request.endpoint
try:
@bp.route('/bar', endpoint='bar.bar')
def foo_bar():
return flask.request.endpoint
except AssertionError:
pass
else:
raise AssertionError('expected AssertionError not raised')
try:
@bp.route('/bar/123', endpoint='bar.123')
def foo_bar_foo():
return flask.request.endpoint
except AssertionError:
pass
else:
raise AssertionError('expected AssertionError not raised')
def foo_foo_foo():
pass
self.assertRaises(
AssertionError,
lambda: bp.add_url_rule(
'/bar/123', endpoint='bar.123', view_func=foo_foo_foo
)
)
self.assertRaises(
AssertionError,
bp.route('/bar/123', endpoint='bar.123'),
lambda: None
)
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/py')
c = app.test_client()
self.assertEqual(c.get('/py/foo').data, b'bp.foo')
# The rule's didn't actually made it through
rv = c.get('/py/bar')
assert rv.status_code == 404
rv = c.get('/py/bar/123')
assert rv.status_code == 404
def test_template_filter(self):
bp = flask.Blueprint('bp', __name__)
@bp.app_template_filter()
def my_reverse(s):
return s[::-1]
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/py')
self.assert_in('my_reverse', app.jinja_env.filters.keys())
self.assert_equal(app.jinja_env.filters['my_reverse'], my_reverse)
self.assert_equal(app.jinja_env.filters['my_reverse']('abcd'), 'dcba')
def test_add_template_filter(self):
bp = flask.Blueprint('bp', __name__)
def my_reverse(s):
return s[::-1]
bp.add_app_template_filter(my_reverse)
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/py')
self.assert_in('my_reverse', app.jinja_env.filters.keys())
self.assert_equal(app.jinja_env.filters['my_reverse'], my_reverse)
self.assert_equal(app.jinja_env.filters['my_reverse']('abcd'), 'dcba')
def test_template_filter_with_name(self):
bp = flask.Blueprint('bp', __name__)
@bp.app_template_filter('strrev')
def my_reverse(s):
return s[::-1]
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/py')
self.assert_in('strrev', app.jinja_env.filters.keys())
self.assert_equal(app.jinja_env.filters['strrev'], my_reverse)
self.assert_equal(app.jinja_env.filters['strrev']('abcd'), 'dcba')
def test_add_template_filter_with_name(self):
bp = flask.Blueprint('bp', __name__)
def my_reverse(s):
return s[::-1]
bp.add_app_template_filter(my_reverse, 'strrev')
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/py')
self.assert_in('strrev', app.jinja_env.filters.keys())
self.assert_equal(app.jinja_env.filters['strrev'], my_reverse)
self.assert_equal(app.jinja_env.filters['strrev']('abcd'), 'dcba')
def test_template_filter_with_template(self):
bp = flask.Blueprint('bp', __name__)
@bp.app_template_filter()
def super_reverse(s):
return s[::-1]
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/py')
@app.route('/')
def index():
return flask.render_template('template_filter.html', value='abcd')
rv = app.test_client().get('/')
self.assert_equal(rv.data, b'dcba')
def test_template_filter_after_route_with_template(self):
app = flask.Flask(__name__)
@app.route('/')
def index():
return flask.render_template('template_filter.html', value='abcd')
bp = flask.Blueprint('bp', __name__)
@bp.app_template_filter()
def super_reverse(s):
return s[::-1]
app.register_blueprint(bp, url_prefix='/py')
rv = app.test_client().get('/')
self.assert_equal(rv.data, b'dcba')
def test_add_template_filter_with_template(self):
bp = flask.Blueprint('bp', __name__)
def super_reverse(s):
return s[::-1]
bp.add_app_template_filter(super_reverse)
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/py')
@app.route('/')
def index():
return flask.render_template('template_filter.html', value='abcd')
rv = app.test_client().get('/')
self.assert_equal(rv.data, b'dcba')
def test_template_filter_with_name_and_template(self):
bp = flask.Blueprint('bp', __name__)
@bp.app_template_filter('super_reverse')
def my_reverse(s):
return s[::-1]
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/py')
@app.route('/')
def index():
return flask.render_template('template_filter.html', value='abcd')
rv = app.test_client().get('/')
self.assert_equal(rv.data, b'dcba')
def test_add_template_filter_with_name_and_template(self):
bp = flask.Blueprint('bp', __name__)
def my_reverse(s):
return s[::-1]
bp.add_app_template_filter(my_reverse, 'super_reverse')
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/py')
@app.route('/')
def index():
return flask.render_template('template_filter.html', value='abcd')
rv = app.test_client().get('/')
self.assert_equal(rv.data, b'dcba')
def test_template_test(self):
bp = flask.Blueprint('bp', __name__)
@bp.app_template_test()
def is_boolean(value):
return isinstance(value, bool)
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/py')
self.assert_in('is_boolean', app.jinja_env.tests.keys())
self.assert_equal(app.jinja_env.tests['is_boolean'], is_boolean)
self.assert_true(app.jinja_env.tests['is_boolean'](False))
def test_add_template_test(self):
bp = flask.Blueprint('bp', __name__)
def is_boolean(value):
return isinstance(value, bool)
bp.add_app_template_test(is_boolean)
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/py')
self.assert_in('is_boolean', app.jinja_env.tests.keys())
self.assert_equal(app.jinja_env.tests['is_boolean'], is_boolean)
self.assert_true(app.jinja_env.tests['is_boolean'](False))
def test_template_test_with_name(self):
bp = flask.Blueprint('bp', __name__)
@bp.app_template_test('boolean')
def is_boolean(value):
return isinstance(value, bool)
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/py')
self.assert_in('boolean', app.jinja_env.tests.keys())
self.assert_equal(app.jinja_env.tests['boolean'], is_boolean)
self.assert_true(app.jinja_env.tests['boolean'](False))
def test_add_template_test_with_name(self):
bp = flask.Blueprint('bp', __name__)
def is_boolean(value):
return isinstance(value, bool)
bp.add_app_template_test(is_boolean, 'boolean')
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/py')
self.assert_in('boolean', app.jinja_env.tests.keys())
self.assert_equal(app.jinja_env.tests['boolean'], is_boolean)
self.assert_true(app.jinja_env.tests['boolean'](False))
def test_template_test_with_template(self):
bp = flask.Blueprint('bp', __name__)
@bp.app_template_test()
def boolean(value):
return isinstance(value, bool)
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/py')
@app.route('/')
def index():
return flask.render_template('template_test.html', value=False)
rv = app.test_client().get('/')
self.assert_in(b'Success!', rv.data)
def test_template_test_after_route_with_template(self):
app = flask.Flask(__name__)
@app.route('/')
def index():
return flask.render_template('template_test.html', value=False)
bp = flask.Blueprint('bp', __name__)
@bp.app_template_test()
def boolean(value):
return isinstance(value, bool)
app.register_blueprint(bp, url_prefix='/py')
rv = app.test_client().get('/')
self.assert_in(b'Success!', rv.data)
def test_add_template_test_with_template(self):
bp = flask.Blueprint('bp', __name__)
def boolean(value):
return isinstance(value, bool)
bp.add_app_template_test(boolean)
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/py')
@app.route('/')
def index():
return flask.render_template('template_test.html', value=False)
rv = app.test_client().get('/')
self.assert_in(b'Success!', rv.data)
def test_template_test_with_name_and_template(self):
bp = flask.Blueprint('bp', __name__)
@bp.app_template_test('boolean')
def is_boolean(value):
return isinstance(value, bool)
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/py')
@app.route('/')
def index():
return flask.render_template('template_test.html', value=False)
rv = app.test_client().get('/')
self.assert_in(b'Success!', rv.data)
def test_add_template_test_with_name_and_template(self):
bp = flask.Blueprint('bp', __name__)
def is_boolean(value):
return isinstance(value, bool)
bp.add_app_template_test(is_boolean, 'boolean')
app = flask.Flask(__name__)
app.register_blueprint(bp, url_prefix='/py')
@app.route('/')
def index():
return flask.render_template('template_test.html', value=False)
rv = app.test_client().get('/')
self.assert_in(b'Success!', rv.data)
def suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(BlueprintTestCase))
return suite