-- CXAA013.A
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-- CXAA013.A
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--
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--
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-- Grant of Unlimited Rights
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-- Grant of Unlimited Rights
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--
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--
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-- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
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-- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
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-- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
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-- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
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-- unlimited rights in the software and documentation contained herein.
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-- unlimited rights in the software and documentation contained herein.
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-- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making
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-- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making
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-- this public release, the Government intends to confer upon all
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-- this public release, the Government intends to confer upon all
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-- recipients unlimited rights equal to those held by the Government.
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-- recipients unlimited rights equal to those held by the Government.
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-- These rights include rights to use, duplicate, release or disclose the
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-- These rights include rights to use, duplicate, release or disclose the
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-- released technical data and computer software in whole or in part, in
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-- released technical data and computer software in whole or in part, in
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-- any manner and for any purpose whatsoever, and to have or permit others
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-- any manner and for any purpose whatsoever, and to have or permit others
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-- to do so.
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-- to do so.
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--
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--
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-- DISCLAIMER
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-- DISCLAIMER
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--
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--
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-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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-- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
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-- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
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-- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
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-- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
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-- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
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-- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
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-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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-- PARTICULAR PURPOSE OF SAID MATERIAL.
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-- PARTICULAR PURPOSE OF SAID MATERIAL.
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--*
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--*
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--
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--
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-- OBJECTIVE:
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-- OBJECTIVE:
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-- Check that the exception Mode_Error is raised when an attempt is made
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-- Check that the exception Mode_Error is raised when an attempt is made
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-- to skip a line or page using the predefined Skip_Line and Skip_Page
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-- to skip a line or page using the predefined Skip_Line and Skip_Page
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-- procedures on a text file with mode Append_File.
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-- procedures on a text file with mode Append_File.
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--
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--
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-- TEST DESCRIPTION:
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-- TEST DESCRIPTION:
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-- A scenario is created that demonstrates the potential for the
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-- A scenario is created that demonstrates the potential for the
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-- incorrect usage of predefined text processing subprograms, which
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-- incorrect usage of predefined text processing subprograms, which
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-- results in the raising of a Mode_Error exception.
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-- results in the raising of a Mode_Error exception.
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-- A count is kept to ensure that each anticipated exception is in fact
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-- A count is kept to ensure that each anticipated exception is in fact
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-- raised and handled properly.
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-- raised and handled properly.
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--
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--
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-- APPLICABILITY CRITERIA:
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-- APPLICABILITY CRITERIA:
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-- This test is applicable only to implementations that support text
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-- This test is applicable only to implementations that support text
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-- files.
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-- files.
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--
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--
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--
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--
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-- CHANGE HISTORY:
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-- CHANGE HISTORY:
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-- 06 Dec 94 SAIC ACVC 2.0
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-- 06 Dec 94 SAIC ACVC 2.0
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-- 28 Feb 97 PWB.CTA Allowed for non-support of some IO operations
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-- 28 Feb 97 PWB.CTA Allowed for non-support of some IO operations
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--!
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--!
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with Ada.Text_IO;
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with Ada.Text_IO;
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with Report;
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with Report;
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procedure CXAA013 is
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procedure CXAA013 is
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use Ada;
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use Ada;
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Text_File : Text_IO.File_Type;
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Text_File : Text_IO.File_Type;
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Text_Filename : constant String :=
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Text_Filename : constant String :=
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Report.Legal_File_Name ( Nam => "CXAA013" );
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Report.Legal_File_Name ( Nam => "CXAA013" );
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Incomplete : exception;
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Incomplete : exception;
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begin
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begin
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Report.Test ("CXAA013", "Check that the exception Mode_Error is " &
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Report.Test ("CXAA013", "Check that the exception Mode_Error is " &
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"raised when an attempt is made to skip " &
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"raised when an attempt is made to skip " &
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"a line or page using the predefined " &
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"a line or page using the predefined " &
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"Skip_Line and Skip_Page procedures on " &
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"Skip_Line and Skip_Page procedures on " &
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"a text file with mode Append_File");
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"a text file with mode Append_File");
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Test_for_Text_IO_Support:
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Test_for_Text_IO_Support:
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begin
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begin
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-- An application creates a text file with mode Append_File.
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-- An application creates a text file with mode Append_File.
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-- Use_Error will be raised if Text_IO operations or external files are not
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-- Use_Error will be raised if Text_IO operations or external files are not
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-- supported.
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-- supported.
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Text_IO.Create (Text_File, Text_IO.Append_File, Text_Filename);
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Text_IO.Create (Text_File, Text_IO.Append_File, Text_Filename);
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exception
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exception
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when Text_IO.Use_Error | Text_IO.Name_Error =>
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when Text_IO.Use_Error | Text_IO.Name_Error =>
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Report.Not_Applicable
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Report.Not_Applicable
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( "Files not supported - Create as Append_File for Text_IO" );
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( "Files not supported - Create as Append_File for Text_IO" );
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raise Incomplete;
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raise Incomplete;
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end Test_for_Text_IO_Support;
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end Test_for_Text_IO_Support;
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-- The application writes some amount of data to the file.
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-- The application writes some amount of data to the file.
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Text_IO.Put_Line (Text_File, "Data entered into the file");
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Text_IO.Put_Line (Text_File, "Data entered into the file");
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Operational_Test_Block:
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Operational_Test_Block:
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declare
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declare
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TC_Number_Of_Forced_Mode_Errors : constant Natural := 2;
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TC_Number_Of_Forced_Mode_Errors : constant Natural := 2;
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TC_Mode_Errors : Natural := 0;
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TC_Mode_Errors : Natural := 0;
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begin
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begin
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Test_for_Skip_Line:
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Test_for_Skip_Line:
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declare
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declare
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TC_Spacing : constant Text_IO.Count := 3;
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TC_Spacing : constant Text_IO.Count := 3;
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begin
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begin
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-- During the course of its processing, the application may attempt to
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-- During the course of its processing, the application may attempt to
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-- invoke the Skip_Line procedure on a file that is currently in Append_File
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-- invoke the Skip_Line procedure on a file that is currently in Append_File
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-- mode (instead of the anticipated In_File mode). This results in the
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-- mode (instead of the anticipated In_File mode). This results in the
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-- raising of Mode_Error.
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-- raising of Mode_Error.
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Text_IO.Skip_Line (Text_File, TC_Spacing);
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Text_IO.Skip_Line (Text_File, TC_Spacing);
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Report.Failed ("Exception not raised by Skip_Line");
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Report.Failed ("Exception not raised by Skip_Line");
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-- An exception handler present within the application handles the exception
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-- An exception handler present within the application handles the exception
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-- and processing can continue.
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-- and processing can continue.
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exception
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exception
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when Text_IO.Mode_Error =>
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when Text_IO.Mode_Error =>
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TC_Mode_Errors := TC_Mode_Errors + 1;
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TC_Mode_Errors := TC_Mode_Errors + 1;
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when others =>
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when others =>
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Report.Failed("Exception in Skip_Line processing");
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Report.Failed("Exception in Skip_Line processing");
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end Test_for_Skip_Line;
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end Test_for_Skip_Line;
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Test_for_Skip_Page:
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Test_for_Skip_Page:
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begin
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begin
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-- Again, during the course of its processing, the application incorrectly
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-- Again, during the course of its processing, the application incorrectly
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-- assumes that the file mode is In_File, this time attempting to call the
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-- assumes that the file mode is In_File, this time attempting to call the
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-- Skip_Page procedure for the file (that is currently in Append_File mode).
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-- Skip_Page procedure for the file (that is currently in Append_File mode).
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Text_IO.Skip_Page (Text_File);
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Text_IO.Skip_Page (Text_File);
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Report.Failed ("Exception not raised by Skip_Page");
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Report.Failed ("Exception not raised by Skip_Page");
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-- Once again, an exception handler present within the application handles
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-- Once again, an exception handler present within the application handles
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-- the exception and processing continues.
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-- the exception and processing continues.
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exception
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exception
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when Text_IO.Mode_Error =>
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when Text_IO.Mode_Error =>
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TC_Mode_Errors := TC_Mode_Errors + 1;
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TC_Mode_Errors := TC_Mode_Errors + 1;
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when others =>
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when others =>
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Report.Failed("Exception in Skip_Page processing");
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Report.Failed("Exception in Skip_Page processing");
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end Test_for_Skip_Page;
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end Test_for_Skip_Page;
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if (TC_Mode_Errors /= TC_Number_Of_Forced_Mode_Errors) then
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if (TC_Mode_Errors /= TC_Number_Of_Forced_Mode_Errors) then
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Report.Failed ("Incorrect number of exceptions handled");
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Report.Failed ("Incorrect number of exceptions handled");
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end if;
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end if;
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end Operational_Test_Block;
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end Operational_Test_Block;
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Deletion:
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Deletion:
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begin
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begin
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-- Delete the external file.
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-- Delete the external file.
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if Text_IO.Is_Open (Text_File) then
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if Text_IO.Is_Open (Text_File) then
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Text_IO.Delete (Text_File);
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Text_IO.Delete (Text_File);
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else
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else
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Text_IO.Open (Text_File, Text_IO.In_File, Text_Filename);
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Text_IO.Open (Text_File, Text_IO.In_File, Text_Filename);
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Text_IO.Delete (Text_File);
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Text_IO.Delete (Text_File);
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end if;
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end if;
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exception
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exception
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when others =>
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when others =>
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Report.Failed
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Report.Failed
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( "Delete not properly implemented for Text_IO" );
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( "Delete not properly implemented for Text_IO" );
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end Deletion;
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end Deletion;
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Report.Result;
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Report.Result;
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exception
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exception
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when Incomplete =>
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when Incomplete =>
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Report.Result;
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Report.Result;
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when others =>
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when others =>
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Report.Failed ( "Unexpected exception" );
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Report.Failed ( "Unexpected exception" );
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Report.Result;
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Report.Result;
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end CXAA013;
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end CXAA013;
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