@Test
    public void testSplitUnclosedEscaping() {
        String[] csvStr = StringUtils.splitCsv("a|b\\", '|', '\\', '\"');
        Assert.assertEquals("b", csvStr[1]);
    }
Unit tests for csv splitting and concating.
inlong-sort/sort-formats/format-row/format-csv/src/test/java/org/apache/inlong/sort/formats/csv/CsvUtilsTest.java