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jeremybenn |
-- CB41001.A
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--
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-- Grant of Unlimited Rights
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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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-- 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 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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-- 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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-- 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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-- to do so.
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--
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-- DISCLAIMER
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--
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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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-- 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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-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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-- PARTICULAR PURPOSE OF SAID MATERIAL.
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--*
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--
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-- OBJECTIVE:
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-- Check that the 'Identity attribute returns the unique identity of an
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-- exception. Check that the Raise_Exception procedure can raise an
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-- exception that is specified through the use of the 'Identity attribute,
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-- and that Reraise_Occurrence can re-raise an exception occurrence
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-- using an exception choice parameter.
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--
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-- TEST DESCRIPTION:
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-- This test uses the capability of the 'Identity attribute, which
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-- returns the unique identity of an exception, as an Exception_Id
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-- result. This result is used as an input parameter to the procedure
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-- Raise_Exception. The exception that results is handled, propagated
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-- using the Reraise_Occurrence procedure, and handled again.
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-- The above actions are performed for both a user-defined and a
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-- predefined exception.
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--
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--
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-- CHANGE HISTORY:
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-- 06 Dec 94 SAIC ACVC 2.0
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-- 11 Nov 96 SAIC ACVC 2.1: Modified Propagate_User_Exception.
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--
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--!
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with Report;
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with Ada.Exceptions;
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procedure CB41001 is
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begin
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Report.Test ("CB41001", "Check that the 'Identity attribute returns " &
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"the unique identity of an exception. Check " &
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"that the 'Identity attribute is of type " &
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"Exception_Id. Check that the " &
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"Raise_Exception procedure can raise an " &
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"exception that is specified through the " &
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"use of the 'Identity attribute");
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Test_Block:
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declare
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Check_Points : constant := 5;
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type Check_Point_Array_Type is array (1..Check_Points) of Boolean;
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-- Global array used to track the processing path through the test.
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TC_Check_Points : Check_Point_Array_Type := (others => False);
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A_User_Defined_Exception : Exception;
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An_Exception_ID : Ada.Exceptions.Exception_Id :=
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Ada.Exceptions.Null_Id;
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procedure Propagate_User_Exception is
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Hidden_Exception : Exception;
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begin
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-- Use the 'Identity function to store the unique identity of a
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-- user defined exception into a variable of type Exception_Id.
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An_Exception_ID := A_User_Defined_Exception'Identity;
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-- Raise this user defined exception using the result of the
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-- 'Identity attribute.
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Ada.Exceptions.Raise_Exception(E => An_Exception_Id);
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Report.Failed("User defined exception not raised by " &
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"procedure Propagate_User_Exception");
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exception
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when Proc_Excpt : A_User_Defined_Exception => -- Expected exception.
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begin
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-- By raising a different exception at this point, the
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-- information associated with A_User_Defined_Exception must
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-- be correctly stacked internally.
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Ada.Exceptions.Raise_Exception(Hidden_Exception'Identity);
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Report.Failed("Hidden_Exception not raised by " &
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"procedure Propagate_User_Exception");
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exception
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when others =>
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TC_Check_Points(1) := True;
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-- Reraise the original exception, which will be propagated
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-- outside the scope of this procedure.
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Ada.Exceptions.Reraise_Occurrence(Proc_Excpt);
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Report.Failed("User defined exception not reraised");
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end;
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when others =>
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Report.Failed("Unexpected exception raised by " &
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"Procedure Propagate_User_Exception");
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end Propagate_User_Exception;
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begin
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User_Exception_Block:
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begin
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-- Call procedure to raise, handle, and reraise a user defined
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-- exception.
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Propagate_User_Exception;
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Report.Failed("User defined exception not propagated from " &
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"procedure Propagate_User_Exception");
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exception
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when A_User_Defined_Exception => -- Expected exception.
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TC_Check_Points(2) := True;
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when others =>
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Report.Failed
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("Unexpected exception handled in User_Exception_Block");
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end User_Exception_Block;
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Predefined_Exception_Block:
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begin
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Inner_Block:
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begin
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begin
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-- Use the 'Identity attribute as an input parameter to the
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-- Raise_Exception procedure.
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Ada.Exceptions.Raise_Exception(Constraint_Error'Identity);
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Report.Failed("Constraint_Error not raised in Inner_Block");
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exception
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when Excpt : Constraint_Error => -- Expected exception.
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TC_Check_Points(3) := True;
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-- Reraise the exception.
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Ada.Exceptions.Reraise_Occurrence(X => Excpt);
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Report.Failed("Predefined exception not raised from " &
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"within the exception handler - 1");
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when others =>
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Report.Failed("Incorrect result from attempt to raise " &
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"Constraint_Error using the 'Identity " &
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"attribute - 1");
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end;
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Report.Failed("Constraint_Error not reraised in Inner_Block");
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exception
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when Block_Excpt : Constraint_Error => -- Expected exception.
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TC_Check_Points(4) := True;
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-- Reraise the exception in a scope where the exception
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-- was not originally raised.
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Ada.Exceptions.Reraise_Occurrence(X => Block_Excpt);
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Report.Failed("Predefined exception not raised from " &
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"within the exception handler - 2");
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when others =>
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Report.Failed("Incorrect result from attempt to raise " &
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"Constraint_Error using the 'Identity " &
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"attribute - 2");
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end Inner_Block;
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Report.Failed("Exception not propagated from Inner_Block");
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exception
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when Constraint_Error => -- Expected exception.
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TC_Check_Points(5) := True;
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when others =>
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Report.Failed("Unexpected exception handled after second " &
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"reraise of Constraint_Error");
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end Predefined_Exception_Block;
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-- Verify the processing path taken through the test.
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for i in 1..Check_Points loop
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if not TC_Check_Points(i) then
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Report.Failed("Incorrect processing path taken through test, " &
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"didn't pass check point #" & Integer'Image(i));
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end if;
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end loop;
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exception
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when others => Report.Failed ("Exception raised in Test_Block");
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end Test_Block;
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Report.Result;
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end CB41001;
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