diff --git a/swh/search/__init__.py b/swh/search/__init__.py
--- a/swh/search/__init__.py
+++ b/swh/search/__init__.py
@@ -25,7 +25,7 @@
     elif cls == 'elasticsearch':
         from .elasticsearch import ElasticSearch as Search
     elif cls == 'memory':
-        from .in_memory import InmemorySearchTest as Search
+        from .in_memory import InMemorySearch as Search
     else:
         raise ValueError('Unknown indexer search class `%s`' % cls)
 
diff --git a/swh/search/tests/test_api_client.py b/swh/search/tests/test_api_client.py
--- a/swh/search/tests/test_api_client.py
+++ b/swh/search/tests/test_api_client.py
@@ -9,9 +9,8 @@
 
 from swh.core.api.tests.server_testing import ServerTestFixture
 
-from swh.search.elasticsearch import ElasticSearch
+from swh.search import get_search
 from swh.search.api.server import app
-from swh.search.api.client import RemoteSearch
 from .test_search import CommonSearchTest
 
 
@@ -32,10 +31,14 @@
         self.app = app
         super().setUp()
         self.reset()
-        self.search = RemoteSearch(self.url())
+        self.search = get_search('remote', {
+            'url': self.url(),
+        })
 
     def reset(self):
-        search = ElasticSearch([self._elasticsearch_host])
+        search = get_search('elasticsearch', {
+            'hosts': [self._elasticsearch_host],
+        })
         search.deinitialize()
         search.initialize()
 
diff --git a/swh/search/tests/test_elasticsearch.py b/swh/search/tests/test_elasticsearch.py
--- a/swh/search/tests/test_elasticsearch.py
+++ b/swh/search/tests/test_elasticsearch.py
@@ -7,7 +7,7 @@
 
 import pytest
 
-from swh.search.elasticsearch import ElasticSearch
+from swh.search import get_search
 from .test_search import CommonSearchTest
 
 
@@ -15,7 +15,9 @@
     @pytest.fixture(autouse=True)
     def _instantiate_search(self, elasticsearch_host):
         self._elasticsearch_host = elasticsearch_host
-        self.search = ElasticSearch([elasticsearch_host])
+        self.search = get_search('elasticsearch', {
+            'hosts': [elasticsearch_host],
+        })
 
     def setUp(self):
         self.reset()
diff --git a/swh/search/tests/test_in_memory.py b/swh/search/tests/test_in_memory.py
--- a/swh/search/tests/test_in_memory.py
+++ b/swh/search/tests/test_in_memory.py
@@ -7,14 +7,14 @@
 
 import pytest
 
-from swh.search.in_memory import InMemorySearch
+from swh.search import get_search
 from .test_search import CommonSearchTest
 
 
 class InmemorySearchTest(unittest.TestCase, CommonSearchTest):
     @pytest.fixture(autouse=True)
     def _instantiate_search(self):
-        self.search = InMemorySearch()
+        self.search = get_search('memory', {})
 
     def setUp(self):
         self.reset()