diff --git a/swh/lister/debian/tests/conftest.py b/swh/lister/debian/tests/conftest.py
index 8adc690..4443ef8 100644
--- a/swh/lister/debian/tests/conftest.py
+++ b/swh/lister/debian/tests/conftest.py
@@ -1,61 +1,80 @@
 # Copyright (C) 2019-2020 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 pytest_postgresql.janitor import DatabaseJanitor
 from sqlalchemy import create_engine
 from sqlalchemy.orm import sessionmaker
 
+from swh.core.db.pytest_plugin import postgresql_fact
 from swh.lister.core.models import SQLBase
+
 from swh.lister.debian import debian_init
+import swh.scheduler
+
+SQL_DIR = os.path.join(os.path.dirname(swh.scheduler.__file__), "sql")
+postgresql_scheduler = postgresql_fact(
+    "postgresql_proc",
+    db_name="scheduler-lister",
+    dump_files=os.path.join(SQL_DIR, "*.sql"),
+    # do not truncate the task tables, it's required in between test
+    no_truncate_tables={"dbversion", "priority_ratio", "task"},
+)
+
+
+@pytest.fixture
+def swh_scheduler_config(postgresql_scheduler):
+    return {"db": postgresql_scheduler.dsn}
 
 
 @pytest.fixture
 def lister_under_test():
     return "debian"
 
 
 @pytest.fixture
 def lister_debian(swh_lister):
     # Initialize the debian data model
     debian_init(
         swh_lister.db_engine, suites=["stretch"], components=["main", "contrib"]
     )
 
     # Add the load-deb-package in the scheduler backend
     swh_lister.scheduler.create_task_type(
         {
             "type": "load-deb-package",
             "description": "Load a Debian package",
             "backend_name": "swh.loader.debian.tasks.LoaderDebianPackage",
             "default_interval": "1 day",
         }
     )
 
     return swh_lister
 
 
 @pytest.fixture
 def sqlalchemy_engine(postgresql_proc):
     pg_host = postgresql_proc.host
     pg_port = postgresql_proc.port
     pg_user = postgresql_proc.user
 
     pg_db = "sqlalchemy-tests"
 
     url = f"postgresql://{pg_user}@{pg_host}:{pg_port}/{pg_db}"
     with DatabaseJanitor(pg_user, pg_host, pg_port, pg_db, postgresql_proc.version):
         engine = create_engine(url)
         yield engine
         engine.dispose()
 
 
 @pytest.fixture
 def session(sqlalchemy_engine):
     SQLBase.metadata.create_all(sqlalchemy_engine)
     Session = sessionmaker(bind=sqlalchemy_engine)
     session = Session()
     yield session
     session.close()