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-- CB41004.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 Raise_Exception and Reraise_Occurrence have no effect in
-- the case of Null_Id or Null_Occurrence. Check that Exception_Message,
-- Exception_Identity, Exception_Name, and Exception_Information raise
-- Constraint_Error for a Null_Occurrence input parameter.
-- Check that calling the Save_Occurrence subprograms with the
-- Null_Occurrence input parameter saves the Null_Occurrence to the
-- appropriate target object, and does not raise Constraint_Error.
-- Check that Null_Id is the default initial value of type Exception_Id.
--
-- TEST DESCRIPTION:
-- This test performs a series of calls to many of the subprograms
-- defined in package Ada.Exceptions, using either Null_Id or
-- Null_Occurrence (based on their parameter profile). In the cases of
-- Raise_Exception and Reraise_Occurrence, these null input values
-- should result in no exceptions being raised, and Constraint_Error
-- should not be raised in response to these calls. Test failure will
-- result if any exception is raised in these cases.
-- For the Save_Occurrence subprograms, calling them with the
-- Null_Occurrence input parameter does not raise Constraint_Error, but
-- simply results in the Null_Occurrence being saved into the appropriate
-- target (either a Exception_Occurrence out parameter, or as an
-- Exception_Occurrence_Access value).
-- In the cases of the other mentioned subprograms, calls performed with
-- a Null_Occurrence input parameter must result in Constraint_Error
-- being raised. This exception will be handled, with test failure the
-- result if the exception is not raised.
--
--
-- CHANGE HISTORY:
-- 06 Dec 94 SAIC ACVC 2.0
-- 08 Dec 00 RLB Removed Exception_Identity subtest, pending
-- resolution of AI95-00241.
-- Notes for future: Replace Exception_Identity
-- subtest with whatever the resolution is.
-- Add a subtest for Exception_Name(Null_Id), which
-- is missing from this test.
--!
with Report;
with Ada.Exceptions;
procedure CB41004 is
begin
Report.Test ("CB41004", "Check that Null_Id and Null_Occurrence input " &
"parameters have the appropriate effect when " &
"used in calls of the subprograms found in " &
"package Ada.Exceptions");
Test_Block:
declare
use Ada.Exceptions;
-- No initial values given for these two declarations; they default
-- to Null_Id and Null_Occurrence respectively.
A_Null_Exception_Id : Ada.Exceptions.Exception_Id;
A_Null_Exception_Occurrence : Ada.Exceptions.Exception_Occurrence;
TC_Flag : Boolean := False;
begin
-- Verify that Null_Id is the default initial value of type
-- Exception_Id.
if not (A_Null_Exception_Id = Ada.Exceptions.Null_Id) then
Report.Failed("The default initial value of an object of type " &
"Exception_Id was not Null_Id");
end if;
-- Verify that Reraise_Occurrence has no effect in the case of
-- Null_Occurrence.
begin
Ada.Exceptions.Reraise_Occurrence(A_Null_Exception_Occurrence);
TC_Flag := True;
exception
when others =>
Report.Failed
("Exception raised by procedure Reraise_Occurrence " &
"when called with a Null_Occurrence input parameter");
end;
if not TC_Flag then
Report.Failed("Incorrect processing following the call to " &
"Reraise_Occurrence with a Null_Occurrence " &
"input parameter");
end if;
-- Verify that function Exception_Message raises Constraint_Error for
-- a Null_Occurrence input parameter.
begin
declare
Msg : constant String :=
Ada.Exceptions.Exception_Message(A_Null_Exception_Occurrence);
begin
Report.Failed
("Constraint_Error not raised by Function Exception_Message " &
"when called with a Null_Occurrence input parameter");
end;
exception
when Constraint_Error => null; -- OK, expected exception.
when others =>
Report.Failed
("Unexpected exception raised by Function Exception_Message " &
"when called with a Null_Occurrence input parameter");
end;
-- -- Verify that function Exception_Identity raises Constraint_Error for
-- -- a Null_Occurrence input parameter.
-- -- Note: (RLB, 2000/12/08) This behavior may be modified by AI-00241.
-- -- As such, this test case has been removed pending a resolution.
-- begin
-- declare
-- Id : Ada.Exceptions.Exception_Id :=
-- Ada.Exceptions.Exception_Identity(A_Null_Exception_Occurrence);
-- begin
-- Report.Failed
-- ("Constraint_Error not raised by Function Exception_Identity " &
-- "when called with a Null_Occurrence input parameter");
-- end;
-- exception
-- when Constraint_Error => null; -- OK, expected exception.
-- when others =>
-- Report.Failed
-- ("Unexpected exception raised by Function Exception_Identity " &
-- "when called with a Null_Occurrence input parameter");
-- end;
-- Verify that function Exception_Name raises Constraint_Error for
-- a Null_Occurrence input parameter.
begin
declare
Name : constant String :=
Ada.Exceptions.Exception_Name(A_Null_Exception_Occurrence);
begin
Report.Failed
("Constraint_Error not raised by Function Exception_Name " &
"when called with a Null_Occurrence input parameter");
end;
exception
when Constraint_Error => null; -- OK, expected exception.
when others =>
Report.Failed
("Unexpected exception raised by Function Exception_Null " &
"when called with a Null_Occurrence input parameter");
end;
-- Verify that function Exception_Information raises Constraint_Error
-- for a Null_Occurrence input parameter.
begin
declare
Info : constant String :=
Ada.Exceptions.Exception_Information
(A_Null_Exception_Occurrence);
begin
Report.Failed
("Constraint_Error not raised by Function " &
"Exception_Information when called with a " &
"Null_Occurrence input parameter");
end;
exception
when Constraint_Error => null; -- OK, expected exception.
when others =>
Report.Failed
("Unexpected exception raised by Function Exception_Null " &
"when called with a Null_Occurrence input parameter");
end;
-- Verify that calling the Save_Occurrence procedure with a
-- Null_Occurrence input parameter saves the Null_Occurrence to the
-- target object, and does not raise Constraint_Error.
declare
use Ada.Exceptions;
Saved_Occurrence : Exception_Occurrence;
begin
-- Initialize the Saved_Occurrence variable with a value other than
-- Null_Occurrence (default).
begin
raise Program_Error;
exception
when Exc : others => Save_Occurrence(Saved_Occurrence, Exc);
end;
-- Save a Null_Occurrence input parameter.
begin
Save_Occurrence(Target => Saved_Occurrence,
Source => Ada.Exceptions.Null_Occurrence);
exception
when others =>
Report.Failed
("Unexpected exception raised by procedure " &
"Save_Occurrence when called with a Null_Occurrence " &
"input parameter");
end;
-- Verify that the occurrence that was saved above is a
-- Null_Occurrence value.
begin
Reraise_Occurrence(Saved_Occurrence);
exception
when others =>
Report.Failed("Value saved from Procedure Save_Occurrence " &
"resulted in an exception, i.e., was not a " &
"value of Null_Occurrence");
end;
exception
when others =>
Report.Failed("Unexpected exception raised during evaluation " &
"of Procedure Save_Occurrence");
end;
-- Verify that calling the Save_Occurrence function with a
-- Null_Occurrence input parameter returns the Null_Occurrence as the
-- function result, and does not raise Constraint_Error.
declare
Occurrence_Ptr : Ada.Exceptions.Exception_Occurrence_Access;
begin
-- Save a Null_Occurrence input parameter.
begin
Occurrence_Ptr :=
Ada.Exceptions.Save_Occurrence(Ada.Exceptions.Null_Occurrence);
exception
when others =>
Report.Failed
("Unexpected exception raised by function " &
"Save_Occurrence when called with a Null_Occurrence " &
"input parameter");
end;
-- Verify that the occurrence that was saved above is a
-- Null_Occurrence value.
begin
-- Dereferenced value of type Exception_Occurrence_Access
-- should be a Null_Occurrence value, based on the action
-- of Function Save_Occurrence above. Providing this as an
-- input parameter to Reraise_Exception should not result in
-- any exception being raised.
Ada.Exceptions.Reraise_Occurrence(Occurrence_Ptr.all);
exception
when others =>
Report.Failed("Value saved from Function Save_Occurrence " &
"resulted in an exception, i.e., was not a " &
"value of Null_Occurrence");
end;
exception
when others =>
Report.Failed("Unexpected exception raised during evaluation " &
"of Function Save_Occurrence");
end;
exception
when others => Report.Failed ("Exception raised in Test_Block");
end Test_Block;
Report.Result;
end CB41004;