select ut.version() from dual;

create or replace package jge_tst as
  --%suite
  
  --%test
  procedure tst;
end;
/

create or replace package body jge_tst as
  procedure tst as
    c_price  CONSTANT NUMBER(20,4):= 1357;
    c_user   CONSTANT varchar2(30):= 'TEST_USER';
    v_actual  sys_refcursor;
    v_expected sys_refcursor;
  begin
    open v_actual for
      select cast(null as number(10)) as usd_price_amt, c_user as update_id
        from dual where dummy = 1;
    open v_expected for
      select c_price as usd_price_amt, c_user as update_id from dual;
    ut.expect(v_actual).to_equal(v_expected);
  end;  
end;
/

exec ut.run('jge_tst');

v3.1.2.2134

Package JGE_TST compiled

Package Body JGE_TST compiled

jge_tst
  tst [.035 sec] (FAILED - 1)
 
Failures:
 
  1) tst
      ORA-19202: Error occurred in XML processing
      ORA-01722: invalid number
      ORA-06512: at "UT3.UT_DATA_VALUE_REFCURSOR", line 96
      ORA-06512: at "UT3.UT_DATA_VALUE_REFCURSOR", line 21
      ORA-06512: at "UT3.UT", line 79
      ORA-06512: at "UT3_TEST.JGE_TST", line 12
      ORA-06512: at line 6
Finished in .037598 seconds
1 tests, 0 failed, 1 errored, 0 disabled, 0 warning(s)
 
PL/SQL procedure successfully completed.

  1) tst
      ORA-20000: Exception thrown when fetching data from cursor. 
      ORA-01722: invalid number
      ORA-06512: at "UT3.UT_DATA_VALUE_REFCURSOR", line .... (where exception is thrown)
      ORA-06512: at "UT3.UT", line 79
      ORA-06512: at "UT3_TEST.JGE_TST", line 12
      ORA-06512: at line 6