diff --git a/mayan/apps/documents/tests/mixins.py b/mayan/apps/documents/tests/mixins.py
index 220453529a..1fcf9c744d 100644
--- a/mayan/apps/documents/tests/mixins.py
+++ b/mayan/apps/documents/tests/mixins.py
@@ -4,6 +4,8 @@ import os
 
 from django.conf import settings
 
+from mayan.apps.converter.classes import Layer
+
 from ..literals import PAGE_RANGE_ALL
 from ..models import DocumentType
 
@@ -30,6 +32,30 @@ class DocumentTestMixin(object):
         )
         self.test_document_type = self.test_document_type
 
+    def _calculate_test_document_path(self):
+        if not self.test_document_path:
+            self.test_document_path = os.path.join(
+                settings.BASE_DIR, 'apps', 'documents', 'tests', 'contrib',
+                'sample_documents', self.test_document_filename
+            )
+
+    def setUp(self):
+        super(DocumentTestMixin, self).setUp()
+        Layer.invalidate_cache()
+
+        self.test_documents = []
+
+        if self.auto_create_document_type:
+            self._create_document_type()
+
+            if self.auto_upload_document:
+                self.upload_document()
+
+    def tearDown(self):
+        for document_type in DocumentType.objects.all():
+            document_type.delete()
+        super(DocumentTestMixin, self).tearDown()
+
     def upload_document(self, label=None):
         self._calculate_test_document_path()
 
@@ -44,28 +70,6 @@ class DocumentTestMixin(object):
         self.test_document = document
         self.test_documents.append(document)
 
-    def _calculate_test_document_path(self):
-        if not self.test_document_path:
-            self.test_document_path = os.path.join(
-                settings.BASE_DIR, 'apps', 'documents', 'tests', 'contrib',
-                'sample_documents', self.test_document_filename
-            )
-
-    def setUp(self):
-        super(DocumentTestMixin, self).setUp()
-        self.test_documents = []
-
-        if self.auto_create_document_type:
-            self._create_document_type()
-
-            if self.auto_upload_document:
-                self.upload_document()
-
-    def tearDown(self):
-        for document_type in DocumentType.objects.all():
-            document_type.delete()
-        super(DocumentTestMixin, self).tearDown()
-
 
 class DocumentTypeViewTestMixin(object):
     def _request_test_document_type_create_view(self):
diff --git a/mayan/apps/documents/tests/test_api.py b/mayan/apps/documents/tests/test_api.py
index 217907c19b..1f610d2fc5 100644
--- a/mayan/apps/documents/tests/test_api.py
+++ b/mayan/apps/documents/tests/test_api.py
@@ -30,7 +30,7 @@ from .literals import (
 from .mixins import DocumentTestMixin
 
 
-class DocumentTypeAPITestCase(LayerTestMixin, DocumentTestMixin, BaseAPITestCase):
+class DocumentTypeAPITestCase(DocumentTestMixin, BaseAPITestCase):
     auto_upload_document = False
     auto_create_document_type = False
 
diff --git a/mayan/apps/documents/tests/test_document_views.py b/mayan/apps/documents/tests/test_document_views.py
index 367b2e0728..381a71211d 100644
--- a/mayan/apps/documents/tests/test_document_views.py
+++ b/mayan/apps/documents/tests/test_document_views.py
@@ -25,6 +25,13 @@ from .mixins import DocumentViewTestMixin
 class DocumentsViewsTestCase(
     LayerTestMixin, DocumentViewTestMixin, GenericDocumentViewTestCase
 ):
+    def _create_document_transformation(self):
+        layer_saved_transformations.add_transformation_to(
+            obj=self.test_document.pages.first(),
+            transformation_class=TEST_TRANSFORMATION_CLASS,
+            arguments=TEST_TRANSFORMATION_ARGUMENT
+        )
+
     def test_document_view_no_permissions(self):
         response = self._request_document_properties_view()
         self.assertEqual(response.status_code, 404)
@@ -329,13 +336,6 @@ class DocumentsViewsTestCase(
 
         self.assertEqual(self.test_document.pages.count(), page_count)
 
-    def _create_document_transformation(self):
-        layer_saved_transformations.add_transformation_to(
-            obj=self.test_document.pages.first(),
-            transformation_class=TEST_TRANSFORMATION_CLASS,
-            arguments=TEST_TRANSFORMATION_ARGUMENT
-        )
-
     def test_document_clear_transformations_view_no_permission(self):
         self._create_document_transformation()