✅ Add test for document collection pagination behavious

tests/__init__.py

@@ -4,6 +4,7 @@
 import factory
 
 from filingcabinet import get_document_model, get_documentcollection_model
+from filingcabinet.models import CollectionDirectory
 
 Document = get_document_model()
 DocumentCollection = get_documentcollection_model()
@@ -13,6 +14,8 @@ class UserFactory(factory.django.DjangoModelFactory):
     class Meta:
         model = settings.AUTH_USER_MODEL
 
+    username = factory.Sequence(lambda n: "user_%s" % n)
+
 
 class DocumentFactory(factory.django.DjangoModelFactory):
     class Meta:
@@ -29,3 +32,15 @@ class Meta:
     title = factory.Sequence(lambda n: "DocumentCollection {}".format(n))
     slug = factory.LazyAttribute(lambda o: slugify(o.title))
     user = factory.SubFactory(UserFactory)
+
+
+class CollectionDirectoryFactory(factory.django.DjangoModelFactory):
+    class Meta:
+        model = CollectionDirectory
+
+    user = factory.SubFactory(UserFactory)
+    collection = factory.SubFactory(
+        DocumentCollectionFactory, user=factory.SelfAttribute("..user")
+    )
+    depth = 1
+    name = factory.Sequence(lambda n: "Document collection %s" % n)