1 files changed, 72 insertions, 0 deletions
diff --git a/rest_framework/tests/breadcrumbs.py b/rest_framework/tests/breadcrumbs.py
new file mode 100644
index 00000000..647ab96d
--- /dev/null
+++ b/rest_framework/tests/breadcrumbs.py
@@ -0,0 +1,72 @@
+from django.conf.urls.defaults import patterns, url
+from django.test import TestCase
+from rest_framework.utils.breadcrumbs import get_breadcrumbs
+from rest_framework.views import APIView
+
+
+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 = 'rest_framework.tests.breadcrumbs'
+
+    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', '/')])