- [ ] I have searched the [issues](https://github.com/apache/incubator-dubbo/issues) of this repository and believe that this is not a duplicate.
- [ ] I have checked the [FAQ](https://github.com/apache/incubator-dubbo/blob/master/FAQ.md) of this repository and believe that this is not a duplicate.

### Environment

* Dubbo version: xxx
* Operating System version: xxx
* Java version: xxx

### Steps to reproduce this issue
the following unit test has been failed in windows OS

org.apache.dubbo.qos.textui.TKvTest#test1
org.apache.dubbo.qos.textui.TLadderTest#testRendering
org.apache.dubbo.qos.textui.TTableTest#test1
org.apache.dubbo.qos.textui.TTableTest#test2

Pls. provide [GitHub address] to reproduce this issue.

### Expected Result

What do you expected from the above steps？

### Actual Result

What actually happens?

If there is an exception, please attach the exception trace:

```
Just put your stack trace here!
```

@Test
    public void testRendering() throws Exception {
        TLadder ladder = new TLadder();
        ladder.addItem("1");
        ladder.addItem("2");
        ladder.addItem("3");
        ladder.addItem("4");
        String result = ladder.rendering();
        String expected = "1\n" +
                "  `-2\n" +
                "    `-3\n" +
                "      `-4\n";
        assertThat(result, equalTo(expected));
        System.out.println(result);
    }
}