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from __future__ import unicode_literals
from django.conf.urls import patterns, url
from django.test import TestCase
from django.utils import six
from rest_framework.utils.model_meta import _resolve_model
from rest_framework.utils.breadcrumbs import get_breadcrumbs
from rest_framework.views import APIView
from tests.models import BasicModel
import rest_framework.utils.model_meta
class Root(APIView):
pass
class ResourceRoot(APIView):
pass
class ResourceInstance(APIView):
pass
class NestedResourceRoot(APIView):
pass
class NestedResourceInstance(APIView):
pass
urlpatterns = patterns(
'',
url(r'^$', Root.as_view()),
url(r'^resource/$', ResourceRoot.as_view()),
url(r'^resource/(?P<key>[0-9]+)$', ResourceInstance.as_view()),
url(r'^resource/(?P<key>[0-9]+)/$', NestedResourceRoot.as_view()),
url(r'^resource/(?P<key>[0-9]+)/(?P<other>[A-Za-z]+)$', NestedResourceInstance.as_view()),
)
class BreadcrumbTests(TestCase):
"""
Tests the breadcrumb functionality used by the HTML renderer.
"""
urls = 'tests.test_utils'
def test_root_breadcrumbs(self):
url = '/'
self.assertEqual(
get_breadcrumbs(url),
[('Root', '/')]
)
def test_resource_root_breadcrumbs(self):
url = '/resource/'
self.assertEqual(
get_breadcrumbs(url),
[
('Root', '/'),
('Resource Root', '/resource/')
]
)
def test_resource_instance_breadcrumbs(self):
url = '/resource/123'
self.assertEqual(
get_breadcrumbs(url),
[
('Root', '/'),
('Resource Root', '/resource/'),
('Resource Instance', '/resource/123')
]
)
def test_nested_resource_breadcrumbs(self):
url = '/resource/123/'
self.assertEqual(
get_breadcrumbs(url),
[
('Root', '/'),
('Resource Root', '/resource/'),
('Resource Instance', '/resource/123'),
('Nested Resource Root', '/resource/123/')
]
)
def test_nested_resource_instance_breadcrumbs(self):
url = '/resource/123/abc'
self.assertEqual(
get_breadcrumbs(url),
[
('Root', '/'),
('Resource Root', '/resource/'),
('Resource Instance', '/resource/123'),
('Nested Resource Root', '/resource/123/'),
('Nested Resource Instance', '/resource/123/abc')
]
)
def test_broken_url_breadcrumbs_handled_gracefully(self):
url = '/foobar'
self.assertEqual(
get_breadcrumbs(url),
[('Root', '/')]
)
class ResolveModelTests(TestCase):
"""
`_resolve_model` should return a Django model class given the
provided argument is a Django model class itself, or a properly
formatted string representation of one.
"""
def test_resolve_django_model(self):
resolved_model = _resolve_model(BasicModel)
self.assertEqual(resolved_model, BasicModel)
def test_resolve_string_representation(self):
resolved_model = _resolve_model('tests.BasicModel')
self.assertEqual(resolved_model, BasicModel)
def test_resolve_unicode_representation(self):
resolved_model = _resolve_model(six.text_type('tests.BasicModel'))
self.assertEqual(resolved_model, BasicModel)
def test_resolve_non_django_model(self):
with self.assertRaises(ValueError):
_resolve_model(TestCase)
def test_resolve_improper_string_representation(self):
with self.assertRaises(ValueError):
_resolve_model('BasicModel')
class ResolveModelWithPatchedDjangoTests(TestCase):
"""
Test coverage for when Django's `get_model` returns `None`.
Under certain circumstances Django may return `None` with `get_model`:
http://git.io/get-model-source
It usually happens with circular imports so it is important that DRF
excepts early, otherwise fault happens downstream and is much more
difficult to debug.
"""
def setUp(self):
"""Monkeypatch get_model."""
self.get_model = rest_framework.utils.model_meta.models.get_model
def get_model(app_label, model_name):
return None
rest_framework.utils.model_meta.models.get_model = get_model
def tearDown(self):
"""Revert monkeypatching."""
rest_framework.utils.model_meta.models.get_model = self.get_model
def test_blows_up_if_model_does_not_resolve(self):
with self.assertRaises(ValueError):
_resolve_model('tests.BasicModel')
|
