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-- CE2405B.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 READ RAISES END_ERROR WHEN THE CURRENT READ POSITION

--     IS GREATER THAN THE END POSITION.  ALSO CHECK THAT END_OF_FILE

--     CORRECTLY DETECTS THE END OF A DIRECT FILE.

-- APPLICABILITY CRITERIA:

--     THIS TEST IS APPLICABLE ONLY TO IMPLEMENTATIONS WHICH SUPPORT

--     CREATION WITH INOUT_FILE MODE AND OPENING OF IN_FILE MODE.

-- HISTORY:

--     SPS 09/28/82

--     JBG 02/22/84  CHANGE TO .ADA TEST

--     EG  05/16/85

--     GMT 08/03/87  ADDED CODE TO CHECK THAT END_OF_FILE WORKS, AND

--                   ADDED CODE TO PREVENT SOME EXCEPTION PROPAGATION.

WITH REPORT; USE REPORT;

WITH DIRECT_IO;

PROCEDURE CE2405B IS

BEGIN

     TEST ("CE2405B", "CHECK THAT END_ERROR IS RAISED BY READ AT THE " &

                      "END OF A FILE AND THAT END_OF_FILE CORRECTLY " &

                      "DETECTS THE END OF A DIRECT_IO FILE");

     DECLARE

          PACKAGE DIR IS NEW DIRECT_IO (CHARACTER);

          USE DIR;

          FT         : FILE_TYPE;

          CH         : CHARACTER;

          INCOMPLETE : EXCEPTION;

     BEGIN

          -- CREATE AND INITIALIZE FILE

          BEGIN

               CREATE (FT, INOUT_FILE, LEGAL_FILE_NAME);

          EXCEPTION

               WHEN USE_ERROR | NAME_ERROR =>

                    NOT_APPLICABLE ("USE_ERROR | NAME_ERROR WAS " &

                                    "RAISED ON CREATE - 1");

                    RAISE INCOMPLETE;

               WHEN OTHERS =>

                    FAILED ("WRONG EXCEPTION RAISED ON CREATE - 2");

                    RAISE INCOMPLETE;

          END;

          BEGIN

               WRITE (FT, 'C');

               WRITE (FT, 'X');

               -- BEGIN TEST

               IF NOT END_OF_FILE (FT) THEN

                    FAILED ("END_OF_FILE RETURNED INCORRECT " &

                            "BOOLEAN VALUE - 3");

               END IF;

               BEGIN

                    READ (FT, CH);

                    FAILED ("END_ERROR NOT RAISED ON READ - 4");

               EXCEPTION

                    WHEN END_ERROR =>

                         NULL;

                    WHEN OTHERS =>

                         FAILED ("WRONG EXCEPTION RAISED ON READ - 5");

               END;

               WRITE (FT,'E');

               BEGIN

                    READ (FT, CH);

                    FAILED ("END_ERROR NOT RAISED ON READ - 6");

               EXCEPTION

                    WHEN END_ERROR =>

                         NULL;

                    WHEN OTHERS =>

                         FAILED ("WRONG EXCEPTION RAISED ON READ - 7");

               END;

          END;

          CLOSE (FT);

          BEGIN

               OPEN (FT, IN_FILE, LEGAL_FILE_NAME);

          EXCEPTION

               WHEN USE_ERROR =>

                    NOT_APPLICABLE ("USE_ERROR RAISED ON OPEN - 8");

                    RAISE INCOMPLETE;

               WHEN OTHERS =>

                    FAILED ("WRONG EXCEPTION RAISED ON OPEN - 9");

                    RAISE INCOMPLETE;

          END;

          DECLARE

               COUNT_NBR_OF_READS : NATURAL := 0;

               EXPECTED_COUNT     : CONSTANT := 3;

          BEGIN

               LOOP

                    IF END_OF_FILE (FT) THEN

                         EXIT;

                    ELSE

                         READ (FT, CH);

                         COUNT_NBR_OF_READS := COUNT_NBR_OF_READS + 1;

                    END IF;

               END LOOP;

               IF COUNT_NBR_OF_READS /= EXPECTED_COUNT THEN

                      FAILED ("THE BAD VALUE FOR COUNT_NBR_OF_READS " &

                              "IS " &

                               NATURAL'IMAGE (COUNT_NBR_OF_READS) );

               END IF;

          END;

          BEGIN

               DELETE (FT);

          EXCEPTION

               WHEN USE_ERROR =>

                    NULL;

          END;

     EXCEPTION

          WHEN INCOMPLETE =>

               NULL;

     END;

     RESULT;

END CE2405B;