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-- CE2401L.ADA

--                             Grant of Unlimited Rights

--

--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,

--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained 

--     unlimited rights in the software and documentation contained herein.

--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making 

--     this public release, the Government intends to confer upon all 

--     recipients unlimited rights  equal to those held by the Government.  

--     These rights include rights to use, duplicate, release or disclose the 

--     released technical data and computer software in whole or in part, in 

--     any manner and for any purpose whatsoever, and to have or permit others 

--     to do so.

--

--                                    DISCLAIMER

--

--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR

--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED 

--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE

--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE 

--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A

--     PARTICULAR PURPOSE OF SAID MATERIAL.

--*

-- OBJECTIVE:

--     CHECK THAT REWRITING AN ELEMENT DOES NOT CHANGE THE SIZE OF

--     THE FILE.

-- APPLICABILITY CRITERIA:

--     THIS TEST IS ONLY APPLICABLE TO IMPLEMENTATIONS WHICH SUPPORT

--     CREATE WITH INOUT_FILE MODE FOR DIRECT FILES.

-- HISTORY:

--     DWC 08/12/87  CREATED ORIGINAL TEST.

WITH REPORT; USE REPORT;

WITH DIRECT_IO;

PROCEDURE CE2401L IS

     END_SUBTEST: EXCEPTION;

BEGIN

     TEST ("CE2401L" , "CHECK THAT REWRITING AN ELEMENT DOES NOT " &

                       "CHANGE THE SIZE OF THE FILE");

     DECLARE

          PACKAGE DIR_IO IS NEW DIRECT_IO (INTEGER);

          USE DIR_IO;

          FILE : FILE_TYPE;

     BEGIN

          BEGIN

               CREATE (FILE, INOUT_FILE, LEGAL_FILE_NAME);

          EXCEPTION

               WHEN USE_ERROR | NAME_ERROR =>

                    NOT_APPLICABLE ("CREATE WITH INOUT_FILE MODE " &

                                    "NOT SUPPORTED");

                    RAISE END_SUBTEST;

               WHEN OTHERS =>

                    FAILED ("UNEXPECTED ERROR RAISED ON " &

                            "CREATE");

                    RAISE END_SUBTEST;

          END;

          DECLARE

               OUT_ITEM1 : INTEGER := 10;

               OUT_ITEM2 : INTEGER := 21;

               OUT_ITEM4 : INTEGER := 43;

               IN_ITEM   : INTEGER;

               ONE  : POSITIVE_COUNT := 1;

               TWO  : POSITIVE_COUNT := 2;

               FOUR : POSITIVE_COUNT := 4;

               OLD_FILE_SIZE : POSITIVE_COUNT;

          BEGIN

               BEGIN

                    WRITE (FILE, OUT_ITEM1, ONE);

                    WRITE (FILE, OUT_ITEM4, FOUR);

               EXCEPTION

                    WHEN OTHERS =>

                         FAILED ("EXCEPTION RAISED ON WRITE " &

                                 "IN INOUT_FILE MODE");

                         RAISE END_SUBTEST;

               END;

               OLD_FILE_SIZE := SIZE (FILE);

               WRITE (FILE, OUT_ITEM1, ONE);

               WRITE (FILE, OUT_ITEM4, FOUR);

               IF OLD_FILE_SIZE /= SIZE (FILE) THEN

                    FAILED ("FILE SIZE CHANGED DURING REWRITE - 1");

                    RAISE END_SUBTEST;

               END IF;

               WRITE (FILE, OUT_ITEM1, ONE);

               WRITE (FILE, OUT_ITEM2, TWO);

               WRITE (FILE, OUT_ITEM4, FOUR);

               OLD_FILE_SIZE := SIZE (FILE);

               WRITE (FILE, OUT_ITEM1, FOUR);

               IF OLD_FILE_SIZE /= SIZE (FILE) THEN

                    FAILED ("FILE SIZE CHANGED DURING REWRITE - 2");

                    RAISE END_SUBTEST;

               END IF;

          EXCEPTION

               WHEN END_SUBTEST =>

                    NULL;

          END;

          BEGIN

               DELETE (FILE);

          EXCEPTION

               WHEN USE_ERROR =>

                    NULL;

          END;

     EXCEPTION

          WHEN END_SUBTEST =>

               NULL;

     END;

     RESULT;

END CE2401L;