@Test
  public void testDescribeExtended() throws Throwable {
    String SCRIPT_TEXT = "drop table if exists describeDelim;"
        + "create table describeDelim (orderid int, orderdate string, customerid int)"
        + " ROW FORMAT DELIMITED FIELDS terminated by '\\t' LINES terminated by '\\n';"
        + "describe extended describeDelim;";
    List<String> argList = getBaseArgs(miniHS2.getBaseJdbcURL());
    testScriptFile(SCRIPT_TEXT, argList, OutStream.OUT, Arrays.asList(
        new Tuple<>("Detailed Table Information.*line.delim=\\\\n", true),
        new Tuple<>("Detailed Table Information.*field.delim=\\\\t", true)));
  }
Test 'describe extended' on tables that have special white space characters in the row format.
itests/hive-unit/src/test/java/org/apache/hive/beeline/TestBeeLineWithArgs.java