def METHOD_NAME(self):
    """Test default initialization."""
    params = {
        "common": {
            "export_dir": None
        },
        "validation": {
            "common": {
                "data_source": "",
                "span_length": 0,
                "end_date": "2020-09-01",
                "api_credentials": ""
            }
        }
    }
    validator = Validator(params)
    assert len(validator.suppressed_errors) == 0
    assert isinstance(validator.suppressed_errors, list)