-- 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;