@Test
  public void testVectorExpressionWriterDecimal() throws HiveException {
    DecimalTypeInfo typeInfo = TypeInfoFactory.getDecimalTypeInfo(38, 18);
    testWriterDecimal(typeInfo);
  }
Unit tests for vector expression writers.
ql/src/test/org/apache/hadoop/hive/ql/exec/vector/expressions/TestVectorExpressionWriters.java