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python-tdd/src/core/tests/unit/test_middleware.py

42 lines
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Python

from django.http import HttpResponse
from django.test import RequestFactory, SimpleTestCase
from django.utils import timezone
from core.middleware import TimezoneMiddleware
class TimezoneMiddlewareTest(SimpleTestCase):
def setUp(self):
self.factory = RequestFactory()
self.middleware = TimezoneMiddleware(lambda r: HttpResponse())
def test_activates_valid_timezone_from_cookie(self):
captured = {}
def get_response(request):
captured["tz"] = str(timezone.get_current_timezone())
return HttpResponse()
middleware = TimezoneMiddleware(get_response)
request = self.factory.get("/")
request.COOKIES["user_tz"] = "America/New_York"
middleware(request)
self.assertEqual(captured["tz"], "America/New_York")
def test_deactivates_after_response(self):
# Timezone activation must not leak into subsequent requests
request = self.factory.get("/")
request.COOKIES["user_tz"] = "America/New_York"
self.middleware(request)
self.assertEqual(str(timezone.get_current_timezone()), "UTC")
def test_invalid_timezone_cookie_does_not_raise(self):
request = self.factory.get("/")
request.COOKIES["user_tz"] = "Not/ATimezone"
self.middleware(request) # must not raise
def test_missing_cookie_does_not_raise(self):
request = self.factory.get("/")
self.middleware(request) # must not raise