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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/ada/acats/tests/cxa/cxaa015.a
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+-- CXAA015.A
+--
+-- 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 the exception Status_Error is raised when an attempt is
+-- made to create or open a file in Append_File mode when the file is
+-- already open.
+-- Check that the exception Name_Error is raised by procedure Open when
+-- attempting to open a file in Append_File mode when the name supplied
+-- as the filename does not correspond to an existing external file.
+--
+-- TEST DESCRIPTION:
+-- A scenario is created that demonstrates the potential for the
+-- inappropriate usage of text processing subprograms Create and Open,
+-- resulting in the raising of Status_Error and Name_Error exceptions.
+-- A count is kept to ensure that each anticipated exception is in fact
+-- raised and handled properly.
+--
+-- APPLICABILITY CRITERIA:
+-- This test is applicable only to implementations that support text
+-- files.
+--
+--
+-- CHANGE HISTORY:
+-- 06 Dec 94 SAIC ACVC 2.0
+-- 28 Feb 97 PWB.CTA Allowed for non-support of some IO operations
+--!
+
+with Ada.Text_IO;
+with Report;
+
+procedure CXAA015 is
+ use Ada;
+ Text_File : Text_IO.File_Type;
+ Text_Filename : constant String :=
+ Report.Legal_File_Name ( Nam => "CXAA015" );
+ Incomplete : exception;
+
+begin
+
+ Report.Test ("CXAA015", "Check that the appropriate exceptions " &
+ "are raised when procedures Create and " &
+ "Open are used to inappropriately operate " &
+ "on files of mode Append_File");
+
+ Test_for_Text_IO_Support:
+ begin
+
+-- An application creates a text file with mode Append_File.
+-- Use_Error will be raised if Text_IO operations or external files are not
+-- supported.
+
+ Text_IO.Create (Text_File, Text_IO.Append_File, Text_Filename);
+ exception
+
+ when Text_IO.Use_Error | Text_IO.Name_Error =>
+ Report.Not_Applicable
+ ( "Files not supported - Create as Append_File for Text_IO" );
+ raise Incomplete;
+
+ end Test_for_Text_IO_Support;
+
+
+-- The application writes some amount of data to the file.
+
+ for I in 1 .. 5 loop
+ Text_IO.Put_Line (Text_File, "Data entered into the file");
+ end loop;
+
+ Operational_Test_Block:
+ declare
+ TC_Number_Of_Forced_Errors : constant Natural := 3;
+ TC_Errors : Natural := 0;
+ begin
+
+
+ Test_for_Create:
+ begin
+
+-- During the course of its processing, the application may (erroneously)
+-- attempt to create the same file already in existence in Append_File mode.
+-- This results in the raising of Status_Error.
+
+ Text_IO.Create (Text_File,
+ Text_IO.Append_File,
+ Text_Filename);
+ Report.Failed ("Exception not raised by Create");
+
+-- An exception handler present within the application handles the exception
+-- and processing can continue.
+
+ exception
+ when Text_IO.Status_Error =>
+ TC_Errors := TC_Errors + 1;
+ when others =>
+ Report.Failed("Exception in Create processing");
+ end Test_for_Create;
+
+
+ First_Test_For_Open:
+ begin
+
+-- Again, during the course of its processing, the application incorrectly
+-- attempts to Open a file (in Append_File mode) that is already open.
+
+ Text_IO.Open (Text_File, Text_IO.Append_File, Text_Filename);
+ Report.Failed ("Exception not raised by improper Open - 1");
+
+-- Once again, an exception handler present within the application handles
+-- the exception and processing continues.
+
+ exception
+ when Text_IO.Status_Error =>
+ TC_Errors := TC_Errors + 1;
+
+-- At some point in its processing, the application closes the file that is
+-- currently open.
+
+ Text_IO.Close (Text_File);
+ when others =>
+ Report.Failed("Exception in Open processing - 1");
+ end First_Test_For_Open;
+
+
+ Open_With_Wrong_Filename:
+ declare
+ TC_Wrong_Filename : constant String :=
+ Report.Legal_File_Name(2);
+ begin
+
+-- At this point, the application attempts to Open (in Append_File mode) the
+-- file used in previous processing, but it attempts this Open using a name
+-- string that does not correspond to any existing external file.
+-- First make sure the file doesn't exist. (If it did, then the check
+-- for open in append mode wouldn't work.)
+
+ Verify_No_File:
+ begin
+ Text_IO.Open (Text_File,
+ Text_IO.In_File,
+ TC_Wrong_Filename);
+ exception
+ when Text_IO.Name_Error =>
+ null;
+ when others =>
+ Report.Failed ( "Unexpected exception on Open check" );
+ end Verify_No_File;
+
+ Delete_No_File:
+ begin
+ if Text_IO.Is_Open (Text_File) then
+ Text_IO.Delete (Text_File);
+ end if;
+ exception
+ when others =>
+ Report.Failed ( "Unexpected exception - Delete check" );
+ end Delete_No_File;
+
+ Text_IO.Open (Text_File,
+ Text_IO.Append_File,
+ TC_Wrong_Filename);
+ Report.Failed ("Exception not raised by improper Open - 2");
+
+-- An exception handler for the Name_Error, present within the application,
+-- catches the exception and processing continues.
+
+ exception
+ when Text_IO.Name_Error =>
+ TC_Errors := TC_Errors + 1;
+ when others =>
+ Report.Failed("Exception in Open processing - 2");
+ end Open_With_Wrong_Filename;
+
+
+ if (TC_Errors /= TC_Number_Of_Forced_Errors) then
+ Report.Failed ("Incorrect number of exceptions handled");
+ end if;
+
+ end Operational_Test_Block;
+
+ Deletion:
+ begin
+ -- Delete the external file.
+ if Text_IO.Is_Open (Text_File) then
+ Text_IO.Delete (Text_File);
+ else
+ Text_IO.Open (Text_File, Text_IO.In_File, Text_Filename);
+ Text_IO.Delete (Text_File);
+ end if;
+ exception
+ when others =>
+ Report.Failed
+ ( "Delete not properly implemented for Text_IO" );
+ end Deletion;
+
+ Report.Result;
+
+exception
+ when Incomplete =>
+ Report.Result;
+ when others =>
+ Report.Failed ( "Unexpected exception" );
+ Report.Result;
+
+end CXAA015;