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-- CA11C02.A

--

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--     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

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--     released technical data and computer software in whole or in part, in

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--                                    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 primitive operations declared in a child package

--      override operations declared in ancestor packages, and that

--      operations on class-wide types defined in the ancestor packages

--      dispatch as appropriate to these overriding implementations.

--

-- TEST DESCRIPTION:

--

--      This test builds on the foundation code file (FA11C00) that contains

--      a parent package, child package, and grandchild package.  The parent

--      package declares a tagged type and primitive operation.  The child

--      package extends the type, and overrides the primitive operation. The

--      grandchild package does the same.

--

--      The test procedure "withs" the grandchild package, and receives

--      visibility to all of its ancestor packages, types and operations.

--      A procedure with a formal class-wide parameter is defined that will

--      allow for dispatching calls to the overridden primitive operations,

--      based on the specific type of the actual parameter.  The primitive

--      operations provide a string value to update a global string array

--      variable.  Calls to the local procedure are made, with objects of each

--      of the tagged types as parameters, and the global variable is finally

--      examined to ensure that the correct version of primitive operation was

--      dispatched correctly.

--

-- TEST FILES:

--      This test depends on the following foundation code:

--

--         FA11C00.A

--

--

-- CHANGE HISTORY:

--      06 Dec 94   SAIC    ACVC 2.0

--

--!

with FA11C00_0.FA11C00_1.FA11C00_2;    -- Package Animal.Mammal.Primate

with Report;

procedure CA11C02 is

   package Animal_Package  renames FA11C00_0;

   package Mammal_Package  renames FA11C00_0.FA11C00_1;

   package Primate_Package renames FA11C00_0.FA11C00_1.FA11C00_2;

   Max_Animals : constant := 3;

   type Data_Base_Type is array (1 .. Max_Animals) of String (1 .. 37);

   Zoo_Data_Base : Data_Base_Type := (others => (others => ' '));

                                      -- Global variable.

   Macaw : Animal_Package.Animal   := (Common_Name => "Scarlet Macaw       ",

                                       Weight      => 2);

   Manatee : Mammal_Package.Mammal := (Common_Name => "Southern Manatee    ",

                                       Weight      => 230,

                                       Hair_Color  => Mammal_Package.Brown);

   Lemur : Primate_Package.Primate :=

              (Common_Name => "Ring-Tailed Lemur   ",

               Weight      => 5,

               Hair_Color  => Mammal_Package.Black,

               Habitat     => Primate_Package.Arboreal);

begin

   Report.Test ("CA11C02", "Check that primitive operations declared "   &

                           "in a child package override operations declared " &

                           "in ancestor packages, and that operations " &

                           "on class-wide types defined in the ancestor " &

                           "packages dispatch as appropriate to these " &

                           "overriding implementations");

   declare

      use Animal_Package, Mammal_Package, Primate_Package;

      -- The following procedure updates the global variable Zoo_Data_Base.

      procedure Enter_Data (A : Animal'Class; I : Integer) is

      begin

         Zoo_Data_Base (I) := Image (A);

      end Enter_Data;

   begin

      -- Verify initial test conditions.

      if not (Zoo_Data_Base(1)(1..6) = "      ")

         or not

             (Zoo_Data_Base(2)(1..6) = "      ")

         or not

             (Zoo_Data_Base(3)(1..6) = "      ")

      then

         Report.Failed ("Initial condition failure");

      end if;

      -- Enter data from all three animals into the zoo database.

      Enter_Data (Macaw, 1);                 -- First entry in database.

      Enter_Data (A => Manatee, I => 2);     -- Second entry.

      Enter_Data (Lemur, I => 3);            -- Third entry.

      -- Verify the correct version of the overridden function Image was used

      -- for entering the specific data.

      if not (Zoo_Data_Base(1)(1 .. 6)   = "Animal")

        or not

             (Zoo_Data_Base(1)(26 .. 30) = "Macaw")

        then

           Report.Failed ("Incorrect version of Image for parent type");

      end if;

      if not (Zoo_Data_Base(2)(1 .. 6)   = "Mammal"

        and

          Zoo_Data_Base(2)(27 .. 33) = "Manatee")

        then

           Report.Failed ("Incorrect version of Image for child type");

      end if;

      if not ((Zoo_Data_Base(3)(1 .. 7)   = "Primate")

        and

          (Zoo_Data_Base(3)(30 .. 34) = "Lemur"))

        then

           Report.Failed ("Incorrect version of Image for grandchild type");

      end if;

   end;

   Report.Result;

end CA11C02;