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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/cxa8001.a
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+-- CXA8001.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 all elements to be transferred to a sequential file of
+-- mode Append_File will be placed following the last element currently
+-- in the file.
+-- Check that it is possible to append data to a file that has been
+-- previously appended to.
+-- Check that the predefined procedure Write will place an element after
+-- the last element in the file in mode Append_File.
+--
+-- TEST DESCRIPTION:
+-- This test implements a sequential file system that has the capability
+-- to store data records at the end of a file. Initially, the file is
+-- opened with mode Out_File, and data is written to the file. The file
+-- is closed, then reopened with mode Append_File. An additional record
+-- is written, and again the file is closed. The file is then reopened,
+-- again with mode Append_File, and another record is written to the
+-- file.
+-- The file is closed again, the reopened with mode In_File, and the data
+-- in the file is read and checked for proper ordering within the file.
+--
+-- An expected common usage of Append_File mode would be in the opening
+-- of a file that currently contains data. Likewise, the reopening of
+-- files in Append_Mode that have been previously appended to for the
+-- addition of more data would be frequently encountered. This test
+-- attempts to simulate both situations. (Of course, in an actual user
+-- environment, the open/write/close processing would be performed using
+-- looping structures, rather than the straight-line processing displayed
+-- here.)
+--
+-- APPLICABILITY CRITERIA:
+-- Applicable to all systems capable of supporting IO operations on
+-- external Sequential_IO files.
+--
+--
+-- CHANGE HISTORY:
+-- 06 Dec 94 SAIC ACVC 2.0
+-- 27 Feb 97 PWB.CTA Allowed for non-support of some IO operations
+--!
+
+with Sequential_IO;
+with Report;
+
+procedure CXA8001 is
+
+ -- Declare data types and objects to be stored in the file.
+ subtype Name_Type is String (1 .. 10);
+ type Tickets is range 0 .. 1000;
+
+ type Order_Type is record
+ Name : Name_Type;
+ No_of_Tickets : Tickets;
+ end record;
+
+ package Order_IO is new Sequential_IO (Order_Type); -- Declare Seq_IO
+ -- package,
+ Order_File : Order_IO.File_Type; -- and file object.
+ Order_Filename : constant String :=
+ Report.Legal_File_Name ( Nam => "CXA8001" );
+ Incomplete : exception;
+
+begin
+
+ Report.Test ("CXA8001", "Check that all elements to be transferred to a " &
+ "sequential file of mode Append_File will be " &
+ "placed following the last element currently " &
+ "in the file");
+
+ Test_for_Sequential_IO_Support:
+ begin
+
+ -- An implementation that does not support Sequential_IO in a particular
+ -- environment will raise Use_Error or Name_Error on calls to various
+ -- Sequential_IO operations. This block statement encloses a call to
+ -- Create, which should produce an exception in a non-supportive
+ -- environment. These exceptions will be handled to produce a
+ -- Not_Applicable result.
+
+ Order_IO.Create (File => Order_File, -- Create Sequential_IO file
+ Mode => Order_IO.Out_File, -- with mode Out_File.
+ Name => Order_Filename);
+
+ exception
+
+ when Order_IO.Use_Error | Order_IO.Name_Error =>
+ Report.Not_Applicable
+ ( "Files not supported - Create as Out_File for Sequential_IO" );
+ raise Incomplete;
+
+ end Test_for_Sequential_IO_Support;
+
+ Operational_Test_Block:
+ declare
+ -- Assign values into the component fields of the data objects.
+ Buyer_1 : constant Order_Type := ("John Smith", 3);
+ Buyer_2 : constant Order_Type :=
+ (Name => "Jane Jones", No_of_Tickets => 2);
+ Buyer_3 : Order_Type := ("Mike Brown", 5);
+
+ begin
+ Order_IO.Write (File => Order_File, -- Write initial data item
+ Item => Buyer_1); -- to file.
+
+ Order_IO.Close (File => Order_File); -- Close file.
+
+ --
+ -- Enter additional data records into the file. (Append to a file of
+ -- previous mode Out_File).
+ --
+ Order_IO.Open (Order_File, -- Open Sequential_IO file
+ Order_IO.Append_File, -- with mode Append_File.
+ Order_Filename);
+
+ Order_IO.Write (Order_File, Buyer_2); -- Write second data item
+ -- to file.
+ Order_IO.Close (File => Order_File); -- Close file.
+
+ -- Check to determine whether file is actually closed.
+ begin
+ Order_IO.Write (Order_File, Buyer_2);
+ Report.Failed("Exception not raised on Write to Closed file");
+ exception
+ when Order_IO.Status_Error => null; -- Expected exception.
+ when others =>
+ Report.Failed("Incorrect exception on Write to Closed file");
+ end;
+
+ --
+ -- The following code segment demonstrates appending data to a file
+ -- that has been previously appended to.
+ --
+
+ Order_IO.Open (Order_File, -- Open Sequential_IO file
+ Order_IO.Append_File, -- with mode Append_File.
+ Order_Filename );
+
+ Order_IO.Write (Order_File, Buyer_3); -- Write third data item
+ -- to file.
+ Order_IO.Close (File => Order_File); -- Close file.
+
+
+ Test_Verification_Block:
+ declare
+ TC_Order1, TC_Order2, TC_Order3 : Order_Type;
+ begin
+
+ Order_IO.Open (Order_File, -- Open Sequential_IO file
+ Order_IO.In_File, -- with mode In_File.
+ Order_Filename );
+
+ Order_IO.Read (File => Order_File, -- Read records from file.
+ Item => TC_Order1);
+ Order_IO.Read (Order_File, TC_Order2);
+ Order_IO.Read (Order_File, TC_Order3);
+
+ -- Compare the contents of each with the individual data items.
+ -- If items read from file do not match the items placed into
+ -- the file, in the appropriate order, then fail.
+
+ if ((TC_Order1 /= Buyer_1) or
+ (TC_Order2.Name /= Buyer_2.Name) or
+ (TC_Order2.No_of_Tickets /= Buyer_2.No_of_Tickets) or
+ not ((TC_Order3.Name = "Mike Brown") and
+ (TC_Order3.No_of_Tickets = 5))) then
+ Report.Failed ("Incorrect appending of record data in file");
+ end if;
+
+ -- Check to determine that no more than three data records were
+ -- actually written to the file.
+ if not Order_IO.End_Of_File (Order_File) then
+ Report.Failed("File not empty after three reads");
+ end if;
+
+ exception
+
+ when Order_IO.End_Error => -- If three items not in
+ -- file (data overwritten),
+ -- then fail.
+ Report.Failed ("Incorrect number of record elements in file");
+
+ when others =>
+ Report.Failed ("Error raised during data verification");
+
+ end Test_Verification_Block;
+
+ exception
+
+ when others =>
+ Report.Failed("Exception raised during Sequential_IO processing");
+
+ end Operational_Test_Block;
+
+ Deletion:
+ begin
+ -- Check that file is open prior to deleting it.
+ if Order_IO.Is_Open(Order_File) then
+ Order_IO.Delete (Order_File);
+ else
+ Order_IO.Open(Order_File, Order_IO.In_File, Order_Filename);
+ Order_IO.Delete (Order_File);
+ end if;
+
+ exception
+ when others =>
+ Report.Failed
+ ( "Delete not properly implemented for Sequential_IO" );
+
+ end Deletion;
+
+ Report.Result;
+
+exception
+ when Incomplete =>
+ Report.Result;
+ when others =>
+ Report.Failed ( "Unexpected exception" );
+ Report.Result;
+
+end CXA8001;