diff --git a/.cache/v/cache/lastfailed b/.cache/v/cache/lastfailed
new file mode 100644
index 0000000..9e26dfe
--- /dev/null
+++ b/.cache/v/cache/lastfailed
@@ -0,0 +1 @@
+{}
\ No newline at end of file
diff --git a/swh/loader/tar/tests/test_loader.py b/swh/loader/tar/tests/test_loader.py
index a4f7131..b84ba36 100644
--- a/swh/loader/tar/tests/test_loader.py
+++ b/swh/loader/tar/tests/test_loader.py
@@ -1,139 +1,139 @@
 # Copyright (C) 2017-2018  The Software Heritage developers
 # See the AUTHORS file at the top-level directory of this distribution
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 import os
 
 import pytest
 
 from swh.model import hashutil
 
 from swh.loader.core.tests import BaseLoaderTest
 from swh.loader.tar.loader import TarLoader
 
 
 TEST_CONFIG = {
     'extraction_dir': '/tmp/tests/loader-tar/',  # where to extract the tarball
     'storage': {  # we instantiate it but we don't use it in test context
         'cls': 'memory',
         'args': {
         }
     },
     'send_contents': True,
     'send_directories': True,
     'send_revisions': True,
     'send_releases': True,
     'send_snapshot': True,
     'content_packet_size': 100,
     'content_packet_block_size_bytes': 104857600,
     'content_packet_size_bytes': 1073741824,
     'directory_packet_size': 250,
     'revision_packet_size': 100,
     'release_packet_size': 100,
     'content_size_limit': 1000000000
 }
 
 
-class TestTarLoader(TarLoader):
+class TarLoaderTest(TarLoader):
     def parse_config_file(self, *args, **kwargs):
         return TEST_CONFIG
 
 
-class TarLoaderTest(BaseLoaderTest):
+class TestTarLoader(BaseLoaderTest):
     """Prepare the archive to load
 
     """
     def setUp(self):
         super().setUp('sample-folder.tgz',
                       start_path=os.path.dirname(__file__),
                       uncompress_archive=False)
         self.tarpath = self.destination_path
 
 
-class TarLoaderTest1(TarLoaderTest):
+class TestTarLoader1(TestTarLoader):
     def setUp(self):
         super().setUp()
-        self.loader = TestTarLoader()
+        self.loader = TarLoaderTest()
         self.storage = self.loader.storage
 
     @pytest.mark.fs
     def test_load(self):
         """Process a new tarball should be ok
 
         """
         # given
         origin = {
             'url': 'file:///tmp/sample-folder',
             'type': 'dir'
         }
 
         visit_date = 'Tue, 3 May 2016 17:16:32 +0200'
 
         import datetime
         commit_time = int(datetime.datetime(
             2018, 12, 5, 13, 35, 23, 0,
             tzinfo=datetime.timezone(datetime.timedelta(hours=1))
         ).timestamp())
 
         swh_person = {
             'name': 'Software Heritage',
             'fullname': 'Software Heritage',
             'email': 'robot@softwareheritage.org'
         }
 
         revision_message = 'swh-loader-tar: synthetic revision message'
         revision_type = 'tar'
         revision = {
             'date': {
                 'timestamp': commit_time,
                 'offset': 0,
             },
             'committer_date': {
                 'timestamp': commit_time,
                 'offset': 0,
             },
             'author': swh_person,
             'committer': swh_person,
             'type': revision_type,
             'message': revision_message,
             'synthetic': True,
         }
 
         branch_name = os.path.basename(self.tarpath)
 
         # when
         self.loader.load(tar_path=self.tarpath, origin=origin,
                          visit_date=visit_date, revision=revision,
                          branch_name=branch_name)
 
         # then
         self.assertCountContents(8, "3 files + 5 links")
         self.assertCountDirectories(6, "4 subdirs + 1 empty + 1 main dir")
         self.assertCountRevisions(1, "synthetic revision")
 
         rev_id = hashutil.hash_to_bytes(
             '67a7d7dda748f9a86b56a13d9218d16f5cc9ab3d')
         actual_revision = next(self.storage.revision_get([rev_id]))
         self.assertTrue(actual_revision['synthetic'])
         self.assertEqual(actual_revision['parents'], [])
         self.assertEqual(actual_revision['type'], 'tar')
         self.assertEqual(actual_revision['message'],
                          b'swh-loader-tar: synthetic revision message')
         self.assertEqual(actual_revision['directory'],
                          b'\xa7A\xfcM\x96\x8c{\x8e<\x94\xff\x86\xe7\x04\x80\xc5\xc7\xe5r\xa9')  # noqa
 
         self.assertEqual(
             actual_revision['metadata']['original_artifact'][0],
             {
                 'sha1_git': 'cc848944a0d3e71d287027347e25467e61b07428',
                 'archive_type': 'tar',
                 'blake2s256': '5d70923443ad36377cd58e993aff0e3c1b9ef14f796c69569105d3a99c64f075',  # noqa
                 'name': 'sample-folder.tgz',
                 'sha1': '3ca0d0a5c6833113bd532dc5c99d9648d618f65a',
                 'length': 555,
                 'sha256': '307ebda0071ca5975f618e192c8417161e19b6c8bf581a26061b76dc8e85321d'  # noqa
             })
 
         self.assertCountReleases(0)
         self.assertCountSnapshots(1)