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import time
from django.core.exceptions import ImproperlyConfigured
from django.http import HttpResponse
from django.test import TestCase, RequestFactory
from django.utils import unittest
from django.views.generic import View, TemplateView, RedirectView
class SimpleView(View):
"""
A simple view with a docstring.
"""
def get(self, request):
return HttpResponse('This is a simple view')
class SimplePostView(SimpleView):
post = SimpleView.get
class PostOnlyView(View):
def post(self, request):
return HttpResponse('This view only accepts POST')
class CustomizableView(SimpleView):
parameter = {}
def decorator(view):
view.is_decorated = True
return view
class DecoratedDispatchView(SimpleView):
@decorator
def dispatch(self, request, *args, **kwargs):
return super(DecoratedDispatchView, self).dispatch(request, *args, **kwargs)
class AboutTemplateView(TemplateView):
def get(self, request):
return self.render_to_response({})
def get_template_names(self):
return ['generic_views/about.html']
class AboutTemplateAttributeView(TemplateView):
template_name = 'generic_views/about.html'
def get(self, request):
return self.render_to_response(context={})
class InstanceView(View):
def get(self, request):
return self
class ViewTest(unittest.TestCase):
rf = RequestFactory()
def _assert_simple(self, response):
self.assertEqual(response.status_code, 200)
self.assertEqual(response.content, 'This is a simple view')
def test_no_init_kwargs(self):
"""
Test that a view can't be accidentally instantiated before deployment
"""
try:
view = SimpleView(key='value').as_view()
self.fail('Should not be able to instantiate a view')
except AttributeError:
pass
def test_no_init_args(self):
"""
Test that a view can't be accidentally instantiated before deployment
"""
try:
view = SimpleView.as_view('value')
self.fail('Should not be able to use non-keyword arguments instantiating a view')
except TypeError:
pass
def test_pathological_http_method(self):
"""
The edge case of a http request that spoofs an existing method name is caught.
"""
self.assertEqual(SimpleView.as_view()(
self.rf.get('/', REQUEST_METHOD='DISPATCH')
).status_code, 405)
def test_get_only(self):
"""
Test a view which only allows GET doesn't allow other methods.
"""
self._assert_simple(SimpleView.as_view()(self.rf.get('/')))
self.assertEqual(SimpleView.as_view()(self.rf.post('/')).status_code, 405)
self.assertEqual(SimpleView.as_view()(
self.rf.get('/', REQUEST_METHOD='FAKE')
).status_code, 405)
def test_get_and_head(self):
"""
Test a view which supplies a GET method also responds correctly to HEAD.
"""
self._assert_simple(SimpleView.as_view()(self.rf.get('/')))
response = SimpleView.as_view()(self.rf.head('/'))
self.assertEqual(response.status_code, 200)
def test_head_no_get(self):
"""
Test a view which supplies no GET method responds to HEAD with HTTP 405.
"""
response = PostOnlyView.as_view()(self.rf.head('/'))
self.assertEqual(response.status_code, 405)
def test_get_and_post(self):
"""
Test a view which only allows both GET and POST.
"""
self._assert_simple(SimplePostView.as_view()(self.rf.get('/')))
self._assert_simple(SimplePostView.as_view()(self.rf.post('/')))
self.assertEqual(SimplePostView.as_view()(
self.rf.get('/', REQUEST_METHOD='FAKE')
).status_code, 405)
def test_invalid_keyword_argument(self):
"""
Test that view arguments must be predefined on the class and can't
be named like a HTTP method.
"""
# Check each of the allowed method names
for method in SimpleView.http_method_names:
kwargs = dict(((method, "value"),))
self.assertRaises(TypeError, SimpleView.as_view, **kwargs)
# Check the case view argument is ok if predefined on the class...
CustomizableView.as_view(parameter="value")
# ...but raises errors otherwise.
self.assertRaises(TypeError, CustomizableView.as_view, foobar="value")
def test_calling_more_than_once(self):
"""
Test a view can only be called once.
"""
request = self.rf.get('/')
view = InstanceView.as_view()
self.assertNotEqual(view(request), view(request))
def test_class_attributes(self):
"""
Test that the callable returned from as_view() has proper
docstring, name and module.
"""
self.assertEqual(SimpleView.__doc__, SimpleView.as_view().__doc__)
self.assertEqual(SimpleView.__name__, SimpleView.as_view().__name__)
self.assertEqual(SimpleView.__module__, SimpleView.as_view().__module__)
def test_dispatch_decoration(self):
"""
Test that attributes set by decorators on the dispatch method
are also present on the closure.
"""
self.assertTrue(DecoratedDispatchView.as_view().is_decorated)
class TemplateViewTest(TestCase):
urls = 'regressiontests.generic_views.urls'
rf = RequestFactory()
def _assert_about(self, response):
response.render()
self.assertEqual(response.status_code, 200)
self.assertContains(response, '<h1>About</h1>')
def test_get(self):
"""
Test a view that simply renders a template on GET
"""
self._assert_about(AboutTemplateView.as_view()(self.rf.get('/about/')))
def test_head(self):
"""
Test a TemplateView responds correctly to HEAD
"""
response = AboutTemplateView.as_view()(self.rf.head('/about/'))
self.assertEqual(response.status_code, 200)
def test_get_template_attribute(self):
"""
Test a view that renders a template on GET with the template name as
an attribute on the class.
"""
self._assert_about(AboutTemplateAttributeView.as_view()(self.rf.get('/about/')))
def test_get_generic_template(self):
"""
Test a completely generic view that renders a template on GET
with the template name as an argument at instantiation.
"""
self._assert_about(TemplateView.as_view(template_name='generic_views/about.html')(self.rf.get('/about/')))
def test_template_name_required(self):
"""
A template view must provide a template name
"""
self.assertRaises(ImproperlyConfigured, self.client.get, '/template/no_template/')
def test_template_params(self):
"""
A generic template view passes kwargs as context.
"""
response = self.client.get('/template/simple/bar/')
self.assertEqual(response.status_code, 200)
self.assertEqual(response.context['params'], {'foo': 'bar'})
def test_extra_template_params(self):
"""
A template view can be customized to return extra context.
"""
response = self.client.get('/template/custom/bar/')
self.assertEqual(response.status_code, 200)
self.assertEqual(response.context['params'], {'foo': 'bar'})
self.assertEqual(response.context['key'], 'value')
def test_cached_views(self):
"""
A template view can be cached
"""
response = self.client.get('/template/cached/bar/')
self.assertEqual(response.status_code, 200)
time.sleep(1.0)
response2 = self.client.get('/template/cached/bar/')
self.assertEqual(response2.status_code, 200)
self.assertEqual(response.content, response2.content)
time.sleep(2.0)
# Let the cache expire and test again
response2 = self.client.get('/template/cached/bar/')
self.assertEqual(response2.status_code, 200)
self.assertNotEqual(response.content, response2.content)
class RedirectViewTest(unittest.TestCase):
rf = RequestFactory()
def test_no_url(self):
"Without any configuration, returns HTTP 410 GONE"
response = RedirectView.as_view()(self.rf.get('/foo/'))
self.assertEqual(response.status_code, 410)
def test_permanent_redirect(self):
"Default is a permanent redirect"
response = RedirectView.as_view(url='/bar/')(self.rf.get('/foo/'))
self.assertEqual(response.status_code, 301)
self.assertEqual(response['Location'], '/bar/')
def test_temporary_redirect(self):
"Permanent redirects are an option"
response = RedirectView.as_view(url='/bar/', permanent=False)(self.rf.get('/foo/'))
self.assertEqual(response.status_code, 302)
self.assertEqual(response['Location'], '/bar/')
def test_include_args(self):
"GET arguments can be included in the redirected URL"
response = RedirectView.as_view(url='/bar/')(self.rf.get('/foo/'))
self.assertEqual(response.status_code, 301)
self.assertEqual(response['Location'], '/bar/')
response = RedirectView.as_view(url='/bar/', query_string=True)(self.rf.get('/foo/?pork=spam'))
self.assertEqual(response.status_code, 301)
self.assertEqual(response['Location'], '/bar/?pork=spam')
def test_include_urlencoded_args(self):
"GET arguments can be URL-encoded when included in the redirected URL"
response = RedirectView.as_view(url='/bar/', query_string=True)(
self.rf.get('/foo/?unicode=%E2%9C%93'))
self.assertEqual(response.status_code, 301)
self.assertEqual(response['Location'], '/bar/?unicode=%E2%9C%93')
def test_parameter_substitution(self):
"Redirection URLs can be parameterized"
response = RedirectView.as_view(url='/bar/%(object_id)d/')(self.rf.get('/foo/42/'), object_id=42)
self.assertEqual(response.status_code, 301)
self.assertEqual(response['Location'], '/bar/42/')
def test_redirect_POST(self):
"Default is a permanent redirect"
response = RedirectView.as_view(url='/bar/')(self.rf.post('/foo/'))
self.assertEqual(response.status_code, 301)
self.assertEqual(response['Location'], '/bar/')
def test_redirect_HEAD(self):
"Default is a permanent redirect"
response = RedirectView.as_view(url='/bar/')(self.rf.head('/foo/'))
self.assertEqual(response.status_code, 301)
self.assertEqual(response['Location'], '/bar/')
def test_redirect_OPTIONS(self):
"Default is a permanent redirect"
response = RedirectView.as_view(url='/bar/')(self.rf.options('/foo/'))
self.assertEqual(response.status_code, 301)
self.assertEqual(response['Location'], '/bar/')
def test_redirect_PUT(self):
"Default is a permanent redirect"
response = RedirectView.as_view(url='/bar/')(self.rf.put('/foo/'))
self.assertEqual(response.status_code, 301)
self.assertEqual(response['Location'], '/bar/')
def test_redirect_DELETE(self):
"Default is a permanent redirect"
response = RedirectView.as_view(url='/bar/')(self.rf.delete('/foo/'))
self.assertEqual(response.status_code, 301)
self.assertEqual(response['Location'], '/bar/')
def test_redirect_when_meta_contains_no_query_string(self):
"regression for #16705"
# we can't use self.rf.get because it always sets QUERY_STRING
response = RedirectView.as_view(url='/bar/')(self.rf.request(PATH_INFO='/foo/'))
self.assertEqual(response.status_code, 301)
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