def test_all_merged_configs(base_config, all_merged_configs):
    """Test that every override file properly merges with the base config."""
    for config_name, merged_data in all_merged_configs.items():
        config = R2RConfig(merged_data)
        assert config is not None

        # Example: if the override does not change app.default_max_upload_size,
        # it should remain as in the base config.
        if "default_max_upload_size" not in merged_data.get("app", {}):
            assert config.app.default_max_upload_size == 214748364800
Test that every override file properly merges with the base config.
py/tests/unit/app/test_config.py