def test_dynamic_load_exts_list(settings):
    """Assert that a config based extensions are loaded"""
    app = Flask(__name__)
    app.config["EXTENSIONS"] = [
        "tests_functional.legacy.dummy_flask_extension.dummy:init_app"
    ]
    FlaskDynaconf(app, dynaconf_instance=settings, extensions_list=True)
    assert app.config.EXTENSIONS == [
        "tests_functional.legacy.dummy_flask_extension.dummy:init_app"
    ]
    assert app.is_dummy_loaded is True
Assert that a config based extensions are loaded
tests/test_flask.py