@Override
    public String getCurrentDbUrl() {
        DataSource ds = this.jt.getDataSource();
        if (ds == null) {
            return StringUtils.EMPTY;
        }
        HikariDataSource bds = (HikariDataSource) ds;
        return bds.getJdbcUrl();
    }
@Test
    void testGetCurrentDbUrl() {
        
        HikariDataSource bds = new HikariDataSource();
        bds.setJdbcUrl("test.jdbc.url");
        when(jt.getDataSource()).thenReturn(bds);
        
        assertEquals("test.jdbc.url", service.getCurrentDbUrl());
    }