@Test
public void testCheckNoError() throws Exception {

    Log log = mock(Log.class);
    DubboAppender.logList.add(log);
    when(log.getLogLevel()).thenReturn(Level.ERROR);
    assertThat(LogUtil.checkNoError(), is(false));
    when(log.getLogLevel()).thenReturn(Level.INFO);
    assertThat(LogUtil.checkNoError(), is(true));
}