diff --git a/swh/web/ui/tests/test_service.py b/swh/web/ui/tests/test_service.py
new file mode 100644
index 00000000..3f0d4eb2
--- /dev/null
+++ b/swh/web/ui/tests/test_service.py
@@ -0,0 +1,90 @@
+# Copyright (C) 2015  The Software Heritage developers
+# See the AUTHORS file at the top-level directory of this distribution
+# License: GNU Affero General Public License version 3, or any later version
+# See top-level LICENSE file for more information
+
+import unittest
+
+from nose.tools import istest
+
+from unittest.mock import patch
+
+from swh.web.ui import service
+
+
+class MockStorage():
+    def stat_counters(self):
+        return {
+            "content": 1770830,
+            "directory": 211683,
+            "directory_entry_dir": 209167,
+            "directory_entry_file": 1807094,
+            "directory_entry_rev": 0,
+            "entity": 0,
+            "entity_history": 0,
+            "occurrence": 0,
+            "occurrence_history": 19600,
+            "origin": 1096,
+            "person": 0,
+            "release": 8584,
+            "revision": 7792,
+            "revision_history": 0,
+            "skipped_content": 0
+        }
+
+    def content_find_occurrence(self, h):
+        return {
+            'origin_type': 'sftp',
+            'origin_url': 'sftp://ftp.gnu.org/gnu/octave',
+            'branch': 'octavio-3.4.0.tar.gz',
+            'revision': b'\xb0L\xaf\x10\xe9SQ`\xd9\x0e\x87KE\xaaBm\xe7b\xf1\x9f',  # noqa
+            'path': b'octavio-3.4.0/doc/interpreter/octave.html/doc_002dS_005fISREG.html'  # noqa
+        }
+
+    def content_exist(self, h):
+        return False
+
+
+class ServiceTestCase(unittest.TestCase):
+
+    @istest
+    def lookup_hash(self):
+        with patch('swh.web.ui.main.storage',
+                   return_value=MockStorage()):
+            actual_lookup = service.lookup_hash(
+                'sha1:123caf10e9535160d90e874b45aa426de762f19f')
+
+        self.assertFalse(actual_lookup)
+
+    @istest
+    def lookup_hash_origin(self):
+        # given
+        expected_origin = {
+            'origin_type': 'sftp',
+            'origin_url': 'sftp://ftp.gnu.org/gnu/octave',
+            'branch': 'octavio-3.4.0.tar.gz',
+            'revision': 'b04caf10e9535160d90e874b45aa426de762f19f',
+            'path': 'octavio-3.4.0/doc/interpreter/octave.html/doc'
+                    '_002dS_005fISREG.html'
+        }
+
+        # when
+        with patch('swh.web.ui.main.storage',
+                   return_value=MockStorage()):
+            actual_origin = service.lookup_hash_origin(
+                'sha1_git:456caf10e9535160d90e874b45aa426de762f19f')
+
+        # then
+        self.assertEqual(actual_origin, expected_origin)
+
+    @istest
+    def stat_counters(self):
+        # given
+        expected_stats = MockStorage().stat_counters()
+
+        # when
+        with patch('swh.web.ui.main.storage', return_value=MockStorage()):
+            actual_stats = service.stat_counters()
+
+        # then
+        self.assertEqual(actual_stats, expected_stats)