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# -*- coding: utf-8 -*-
"""
test
~~~~
Flask-CORS is a simple extension to Flask allowing you to support cross
origin resource sharing (CORS) using a simple decorator.
:copyright: (c) 2016 by Cory Dolphin.
:license: MIT, see LICENSE for more details.
"""
from ..base_test import FlaskCorsTestCase
from flask import Flask
import re
from flask_cors import *
from flask_cors.core import *
letters = 'abcdefghijklmnopqrstuvwxyz' # string.letters is not PY3 compatible
class OriginsTestCase(FlaskCorsTestCase):
def setUp(self):
self.app = Flask(__name__)
@self.app.route('/')
@cross_origin()
def wildcard():
return 'Welcome!'
@self.app.route('/test_always_send')
@cross_origin(always_send=True)
def test_always_send():
return 'Welcome!'
@self.app.route('/test_always_send_no_wildcard')
@cross_origin(always_send=True, send_wildcard=False)
def test_always_send_no_wildcard():
return 'Welcome!'
@self.app.route('/test_send_wildcard_with_origin')
@cross_origin(send_wildcard=True)
def test_send_wildcard_with_origin():
return 'Welcome!'
@self.app.route('/test_list')
@cross_origin(origins=["http://foo.com", "http://bar.com"])
def test_list():
return 'Welcome!'
@self.app.route('/test_string')
@cross_origin(origins="http://foo.com")
def test_string():
return 'Welcome!'
@self.app.route('/test_set')
@cross_origin(origins={"http://foo.com", "http://bar.com"})
def test_set():
return 'Welcome!'
@self.app.route('/test_subdomain_regex')
@cross_origin(origins=r"http?://\w*\.?example\.com:?\d*/?.*")
def test_subdomain_regex():
return ''
@self.app.route('/test_compiled_subdomain_regex')
@cross_origin(origins=re.compile(r"http?://\w*\.?example\.com:?\d*/?.*"))
def test_compiled_subdomain_regex():
return ''
@self.app.route('/test_regex_list')
@cross_origin(origins=[r".*.example.com", r".*.otherexample.com"])
def test_regex_list():
return ''
@self.app.route('/test_regex_mixed_list')
@cross_origin(origins=["http://example.com", r".*.otherexample.com"])
def test_regex_mixed_list():
return ''
@self.app.route('/test_multiple_protocols')
@cross_origin(origins="https?://example.com")
def test_multiple_protocols():
return ''
def test_defaults_no_origin(self):
''' If there is no Origin header in the request, the
Access-Control-Allow-Origin header should be '*' by default.
'''
for resp in self.iter_responses('/'):
self.assertEqual(resp.headers.get(ACL_ORIGIN), '*')
def test_defaults_with_origin(self):
''' If there is an Origin header in the request, the
Access-Control-Allow-Origin header should be included.
'''
for resp in self.iter_responses('/', origin='http://example.com'):
self.assertEqual(resp.status_code, 200)
self.assertEqual(resp.headers.get(ACL_ORIGIN), 'http://example.com')
def test_always_send_no_wildcard(self):
'''
If send_wildcard=False, but the there is '*' in the
allowed origins, we should send it anyways.
'''
for resp in self.iter_responses('/'):
self.assertEqual(resp.status_code, 200)
self.assertEqual(resp.headers.get(ACL_ORIGIN), '*')
def test_always_send_no_wildcard_origins(self):
for resp in self.iter_responses('/'):
self.assertEqual(resp.status_code, 200)
self.assertEqual(resp.headers.get(ACL_ORIGIN), '*')
def test_send_wildcard_with_origin(self):
''' If there is an Origin header in the request, the
Access-Control-Allow-Origin header should be included.
'''
for resp in self.iter_responses('/test_send_wildcard_with_origin', origin='http://example.com'):
self.assertEqual(resp.status_code, 200)
self.assertEqual(resp.headers.get(ACL_ORIGIN), '*')
def test_list_serialized(self):
''' If there is an Origin header in the request, the
Access-Control-Allow-Origin header should be echoed.
'''
resp = self.get('/test_list', origin='http://bar.com')
self.assertEqual(resp.headers.get(ACL_ORIGIN),'http://bar.com')
def test_string_serialized(self):
''' If there is an Origin header in the request,
the Access-Control-Allow-Origin header should be echoed back.
'''
resp = self.get('/test_string', origin='http://foo.com')
self.assertEqual(resp.headers.get(ACL_ORIGIN), 'http://foo.com')
def test_set_serialized(self):
''' If there is an Origin header in the request,
the Access-Control-Allow-Origin header should be echoed back.
'''
resp = self.get('/test_set', origin='http://bar.com')
allowed = resp.headers.get(ACL_ORIGIN)
# Order is not guaranteed
self.assertEqual(allowed, 'http://bar.com')
def test_not_matching_origins(self):
for resp in self.iter_responses('/test_list',origin="http://bazz.com"):
self.assertFalse(ACL_ORIGIN in resp.headers)
def test_subdomain_regex(self):
for sub in letters:
domain = "http://%s.example.com" % sub
for resp in self.iter_responses('/test_subdomain_regex',
headers={'origin': domain}):
self.assertEqual(domain, resp.headers.get(ACL_ORIGIN))
def test_compiled_subdomain_regex(self):
for sub in letters:
domain = "http://%s.example.com" % sub
for resp in self.iter_responses('/test_compiled_subdomain_regex',
headers={'origin': domain}):
self.assertEqual(domain, resp.headers.get(ACL_ORIGIN))
def test_regex_list(self):
for parent in 'example.com', 'otherexample.com':
for sub in letters:
domain = "http://{}.{}.com".format(sub, parent)
for resp in self.iter_responses('/test_regex_list',
headers={'origin': domain}):
self.assertEqual(domain, resp.headers.get(ACL_ORIGIN))
def test_regex_mixed_list(self):
'''
Tests the corner case occurs when the send_always setting is True
and no Origin header in the request, it is not possible to match
the regular expression(s) to determine the correct
Access-Control-Allow-Origin header to be returned. Instead, the
list of origins is serialized, and any strings which seem like
regular expressions (e.g. are not a '*' and contain either '*'
or '?') will be skipped.
Thus, the list of returned Access-Control-Allow-Origin header
is guaranteed to be 'null', the origin or "*", as per the w3
http://www.w3.org/TR/cors/#access-control-allow-origin-response-header
'''
for sub in letters:
domain = "http://%s.otherexample.com" % sub
for resp in self.iter_responses('/test_regex_mixed_list',
origin=domain):
self.assertEqual(domain, resp.headers.get(ACL_ORIGIN))
self.assertEqual("http://example.com",
self.get('/test_regex_mixed_list', origin='http://example.com').headers.get(ACL_ORIGIN))
def test_multiple_protocols(self):
import logging
logging.getLogger('flask_cors').level = logging.DEBUG
resp = self.get('test_multiple_protocols', origin='https://example.com')
self.assertEqual('https://example.com', resp.headers.get(ACL_ORIGIN))
if __name__ == "__main__":
unittest.main()
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