Add test mixin to test the db conversion (dumping and loading) of a specific app.

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

mayan/apps/common/tests/base.py

@@ -19,11 +19,12 @@ from user_management.tests import (
 
 from .literals import TEST_VIEW_NAME, TEST_VIEW_URL
 from .mixins import (
-    ContentTypeCheckMixin, OpenFileCheckMixin, TempfileCheckMixin, UserMixin
+    ContentTypeCheckMixin, DatabaseConversionMixin, OpenFileCheckMixin,
+    TempfileCheckMixin, UserMixin
 )
 
 
-class BaseTestCase(UserMixin, ContentTypeCheckMixin, OpenFileCheckMixin, TempfileCheckMixin, TestCase):
+class BaseTestCase(DatabaseConversionMixin, UserMixin, ContentTypeCheckMixin, OpenFileCheckMixin, TempfileCheckMixin, TestCase):
     """
     This is the most basic test case class any test in the project should use.
     """

mayan/apps/common/tests/mixins.py

@@ -6,6 +6,7 @@ import os
 from django.conf import settings
 from django.contrib.auth import get_user_model
 from django.contrib.auth.models import Group
+from django.core import management
 
 if getattr(settings, 'COMMON_TEST_FILE_HANDLES', False):
     import psutil
@@ -45,6 +46,13 @@ class ContentTypeCheckMixin(object):
         self.client = CustomClient()
 
 
+class DatabaseConversionMixin(object):
+    def _test_database_conversion(self, *app_labels):
+        management.call_command(
+            'convertdb', *app_labels
+        )
+
+
 class OpenFileCheckMixin(object):
     def _get_descriptor_count(self):
         process = psutil.Process()