Improve document comment app

Add keyword arguments to URL definitions and reverse resolution.
Raise HTTP error 404 instead of 403 to reduce the information
divulged. Add view tests.

Signed-off-by: Roberto Rosario <Roberto.Rosario@mayan-edms.com>

mayan/apps/document_comments/tests/test_views.py

@@ -0,0 +1,89 @@
+from __future__ import unicode_literals
+
+from mayan.apps.documents.tests import GenericDocumentViewTestCase
+
+from ..permissions import (
+    permission_comment_create, permission_comment_delete,
+    permission_comment_view
+)
+
+from .literals import TEST_COMMENT_TEXT
+
+
+class CommentsViewsTestCase(GenericDocumentViewTestCase):
+    def setUp(self):
+        super(CommentsViewsTestCase, self).setUp()
+        self.login_user()
+
+    def _request_document_comment_add_view(self):
+        return self.post(
+            viewname='comments:comment_add',
+            kwargs={'document_pk': self.document.pk},
+            data={'comment': TEST_COMMENT_TEXT}
+        )
+
+    def test_document_comment_add_view_no_permission(self):
+        response = self._request_document_comment_add_view()
+        self.assertEqual(response.status_code, 404)
+        self.assertEqual(self.document.comments.all().count(), 0)
+
+    def test_document_comment_add_view_with_access(self):
+        self.grant_access(
+            obj=self.document, permission=permission_comment_create
+        )
+        response = self._request_document_comment_add_view()
+        self.assertEqual(response.status_code, 302)
+        self.assertEqual(self.document.comments.all().count(), 1)
+
+    def _create_test_comment(self):
+        self.test_comment = self.document.comments.create(
+            user=self.user, comment=TEST_COMMENT_TEXT
+        )
+
+    def _request_document_comment_delete_view(self):
+        return self.post(
+            viewname='comments:comment_delete',
+            kwargs={'comment_pk': self.test_comment.pk},
+        )
+
+    def test_document_comment_delete_view_no_permission(self):
+        self._create_test_comment()
+
+        response = self._request_document_comment_delete_view()
+        self.assertEqual(response.status_code, 404)
+        self.assertEqual(self.document.comments.all().count(), 1)
+
+    def test_document_comment_delete_view_with_access(self):
+        self._create_test_comment()
+
+        self.grant_access(
+            obj=self.document, permission=permission_comment_delete
+        )
+        response = self._request_document_comment_delete_view()
+        self.assertEqual(response.status_code, 302)
+        self.assertEqual(self.document.comments.all().count(), 0)
+
+    def _request_document_comment_list_view(self):
+        return self.get(
+            viewname='comments:comments_for_document',
+            kwargs={'document_pk': self.document.pk}
+        )
+
+    def test_document_comment_list_view_no_permissions(self):
+        self._create_test_comment()
+
+        response = self._request_document_comment_list_view()
+        self.assertNotContains(
+            response=response, status_code=404, text=TEST_COMMENT_TEXT
+        )
+
+    def test_document_comment_list_view_with_access(self):
+        self._create_test_comment()
+
+        self.grant_access(
+            obj=self.document, permission=permission_comment_view
+        )
+        response = self._request_document_comment_list_view()
+        self.assertContains(
+            response=response, status_code=200, text=TEST_COMMENT_TEXT
+        )