Make testing for orphaned file handles and temporary files optional.

Allows for running tests in parallel.

docs/releases/2.2.rst

@@ -95,6 +95,9 @@ Other changes
 - Add custom test runner replacing the custom management command runtests.
   The 'test-all' Makefile target that called the `runtests` command has been removed too.
 
+- Testing for orphaned temporary files and orphaned file handles is now optional and 
+  controlled by the COMMON_TEST_FILE_HANDLES and COMMON_TEST_FILE_HANDLES settings.
+
 Removals
 --------
 - Removal of the OCR_TESSERACT_PATH configuration setting.

mayan/apps/common/tests/mixins.py

@@ -5,6 +5,8 @@ import os
 
 import psutil
 
+from django.conf import settings
+
 from ..settings import setting_temporary_directory
 
 
@@ -32,6 +34,34 @@ class ContentTypeCheckMixin(object):
         self.client = CustomClient()
 
 
+class OpenFileCheckMixin(object):
+    def _get_descriptor_count(self):
+        process = psutil.Process()
+        return process.num_fds()
+
+    def _get_open_files(self):
+        process = psutil.Process()
+        return process.open_files()
+
+    def setUp(self):
+        super(OpenFileCheckMixin, self).setUp()
+        if getattr(settings, 'COMMON_TEST_FILE_HANDLES', False):
+            self._open_files = self._get_open_files()
+
+    def tearDown(self):
+        if getattr(settings, 'COMMON_TEST_FILE_HANDLES', False) and not getattr(self, '_skip_file_descriptor_test', False):
+            for new_open_file in self._get_open_files():
+                self.assertFalse(
+                    new_open_file not in self._open_files,
+                    msg='File descriptor leak. The number of file descriptors '
+                    'at the start and at the end of the test are not the same.'
+                )
+
+            self._skip_file_descriptor_test = False
+
+        super(OpenFileCheckMixin, self).tearDown()
+
+
 class TempfileCheckMixin(object):
     # Ignore the jvmstat instrumentation and GitLab's CI .config files
     ignore_globs = ('hsperfdata_*', '.config', '.cache')
@@ -57,43 +87,18 @@ class TempfileCheckMixin(object):
 
     def setUp(self):
         super(TempfileCheckMixin, self).setUp()
-        self._temporary_items = self._get_temporary_entries()
+        if getattr(settings, 'COMMON_TEST_TEMP_FILES', False):
+            self._temporary_items = self._get_temporary_entries()
 
     def tearDown(self):
-        final_temporary_items = self._get_temporary_entries()
+        if getattr(settings, 'COMMON_TEST_TEMP_FILES', False):
-        self.assertEqual(
+            final_temporary_items = self._get_temporary_entries()
-            self._temporary_items, final_temporary_items,
+            self.assertEqual(
-            msg='Orphan temporary file. The number of temporary files and/or '
+                self._temporary_items, final_temporary_items,
-            'directories at the start and at the end of the test are not the '
+                msg='Orphan temporary file. The number of temporary files and/or '
-            'same. Orphan entries: {}'.format(
+                'directories at the start and at the end of the test are not the '
-                ','.join(final_temporary_items - self._temporary_items)
+                'same. Orphan entries: {}'.format(
-            )
+                    ','.join(final_temporary_items - self._temporary_items)
-        )
-        super(TempfileCheckMixin, self).tearDown()
-
-
-class OpenFileCheckMixin(object):
-    def _get_descriptor_count(self):
-        process = psutil.Process()
-        return process.num_fds()
-
-    def _get_open_files(self):
-        process = psutil.Process()
-        return process.open_files()
-
-    def setUp(self):
-        super(OpenFileCheckMixin, self).setUp()
-        self._open_files = self._get_open_files()
-
-    def tearDown(self):
-        if not getattr(self, '_skip_file_descriptor_test', False):
-            for new_open_file in self._get_open_files():
-                self.assertFalse(
-                    new_open_file not in self._open_files,
-                    msg='File descriptor leak. The number of file descriptors '
-                    'at the start and at the end of the test are not the same.'
                 )
-
+            )
-            self._skip_file_descriptor_test = False
+        super(TempfileCheckMixin, self).tearDown()
-
-        super(OpenFileCheckMixin, self).tearDown()