diff --git a/shared/repositories/tests/integration/conftest.py b/shared/repositories/tests/integration/conftest.py
index a34243d..10d88a6 100644
--- a/shared/repositories/tests/integration/conftest.py
+++ b/shared/repositories/tests/integration/conftest.py
@@ -209,6 +209,11 @@ def image_repo(
     populate_env,
 ) -> Iterator[ImageRepository]:
     """Image repository fixture."""
+    # define test environment variables
+    assert 'MINIO_ENDPOINT' in os.environ, 'MINIO_ENDPOINT not set'
+    assert 'MINIO_ACCESS_KEY' in os.environ, 'MINIO_ACCESS_KEY not set'
+    assert 'MINIO_SECRET_KEY' in os.environ, 'MINIO_SECRET_KEY not set'
+    assert 'MONGO_ENDPOINT' in os.environ, 'MONGO_ENDPOINT not set'
     repo = ImageRepository()
     repo.connect()
     yield repo