Junit5和Maven：@BeforeAll初始化方法不会被调用

我将不胜感激任何提示，为什么@BeforeAll下面的Junit5测试套件被跳过。仅供参考，我的输出，当我用Maven构建：

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 T E S T S
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14:43:53.681 [main] DEBUG org.benthumb.db2_web_app.tests.CustomerDaoTest - creating test object...
Running org.benthumb.db2_web_app.tests.CustomerDaoTest

14:43:53.689 [main] DEBUG org.benthumb.db2_web_app.tests.CustomerDaoTest - test one executing...

14:43:53.696 [main] DEBUG org.benthumb.db2_web_app.tests.CustomerDaoTest - customer access object is null...
Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.005 sec

public class CustomerDaoTest {

    private static CustomerDao cDao;
    private static Customer cust;
    private static Properties props;
    private final static String PROP_FILE_NAME = "customer.properties";
    private static InputStream is;
    final static Logger logger = LoggerFactory.getLogger(CustomerDaoTest.class);

    public CustomerDaoTest() {
        logger.debug("creating test object...");
        is = getClass().getClassLoader().getResourceAsStream(PROP_FILE_NAME);
    }

    @BeforeAll
    public static void initializeTestConditions() throws IOException {
        logger.debug("setting up customer access object...");
        props = new Properties();
        if (is != null) {
            props.load(is);
        } else {
            throw new FileNotFoundException("property file '" + PROP_FILE_NAME + "' not found in the classpath");
        }

        cust = new Customer(
                props.getProperty("id"),
                props.getProperty("businessName"),
                props.getProperty("jobTitle"),
                props.getProperty("firstName"),
                props.getProperty("address"),
                props.getProperty("address2"),
                "",
                props.getProperty("city"),
                props.getProperty("state"),
                props.getProperty("country"),
                props.getProperty("phone")
        );
        cDao = new CustomerDao();
        //conn = cDao.conn;
    }

    @Test
    public void testConnectionCustomerDao() throws SQLException {
        //Properties prop = conn.getClientInfo();
        //assertEquals("these two values are equal", prop, null);
        logger.debug("test one executing...");
        Assumptions.assumeTrue(1 == 1);
    }

    @Test
    public void testPersistCustomerDao() {
        if (cDao != null) {
            try {
                cDao.addCustomer(cust);
            } catch (SQLException ex) {
                logger.error(Marker.ANY_MARKER, null, ex.getErrorCode());
            }
        } else {
            logger.debug("customer access object is null...");
        }
        Assumptions.assumeTrue(1 == 1);
    }

}