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