fixtures: add fixture for cache_uri

* this provides the option to make the cache_uri configurable on tests

pytest_invenio/fixtures.py

@@ -3,7 +3,7 @@
 # This file is part of pytest-invenio.
 # Copyright (C) 2017-2024 CERN.
 # Copyright (C) 2018 Esteban J. G. Garbancho.
-# Copyright (C) 2024 Graz University of Technology.
+# Copyright (C) 2024-2025 Graz University of Technology.
 #
 # pytest-invenio is free software; you can redistribute it and/or modify it
 # under the terms of the MIT License; see LICENSE file for more details.
@@ -69,6 +69,15 @@ def instance_path():
     shutil.rmtree(path)
 
 
+@pytest.fixture(scope="module")
+def cache_uri():
+    """Cache uri."""
+    if "CACHE_REDIS_URL" in os.environ:
+        yield os.environ["CACHE_REDIS_URL"]
+    else:
+        yield None
+
+
 @pytest.fixture(scope="module")
 def db_uri(instance_path):
     """Database URI (defaults to an SQLite datbase in the instance path).

pytest_invenio/plugin.py

@@ -3,6 +3,7 @@
 # This file is part of pytest-invenio.
 # Copyright (C) 2017-2018 CERN.
 # Copyright (C) 2018 Northwestern University, Feinberg School of Medicine,
+# Copyright (C) 2025 Graz University of Technology.
 # Galter Health Sciences Library.
 #
 # pytest-invenio is free software; you can redistribute it and/or modify it
@@ -33,6 +34,7 @@
     broker_uri,
     browser,
     bucket_from_dir,
+    cache_uri,
     celery_config,
     celery_config_ext,
     cli_runner,