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-- CXB4007.A

--

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--                                    DISCLAIMER

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--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR

--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED

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--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A

--     PARTICULAR PURPOSE OF SAID MATERIAL.

--*

--

-- OBJECTIVE:

--      Check that the function Valid with Byte_Array and Binary_Format

--      parameters returns True if the Byte_Array parameter corresponds

--      to any value inside the range of type Num.

--      Check that function Valid returns False if the Byte_Array parameter

--      corresponds to a value outside the range of Num.

--

--      Check that function Length with Binary_Format parameter will return

--      the minimum length of a Byte_Array value required to hold any value

--      of decimal type Num.

--

--      Check that function To_Decimal with Byte_Array and Binary_Format

--      parameters will return a decimal type value that corresponds to

--      parameter Item (of type Byte_Array) under the specified Format.

--

--      Check that Conversion_Error is propagated by function To_Decimal if

--      the Byte_Array parameter Item represents a decimal value outside the

--      range of decimal type Num.

--

--      Check that function To_Binary will produce a Byte_Array result that

--      corresponds to the decimal type parameter Item, under the specified

--      Binary_Format.

--

-- TEST DESCRIPTION:

--      This test uses several instantiations of generic package

--      Decimal_Conversions to provide appropriate test material.

--      This test uses the function To_Binary to create all Byte_Array

--      parameter values used in calls to functions Valid and To_Decimal.

--      The function Valid is tested with parameters to provide both

--      valid and invalid expected results.  This test also checks that

--      Function To_Decimal produces expected results in cases where each

--      of the three predefined Binary_Format constants are used in the

--      function calls. In addition, the prescribed propagation of

--      Conversion_Error by function To_Decimal is verified.

--

-- APPLICABILITY CRITERIA:

--      This test is applicable to all implementations that provide

--      package Interfaces.COBOL.  If an implementation provides

--      package Interfaces.COBOL, this test must compile, execute, and

--      report "PASSED".

--

--

-- CHANGE HISTORY:

--      14 Feb 96   SAIC    Initial release for 2.1.

--      30 May 96   SAIC    Incorporated reviewer comments for ACVC 2.1.

--      27 Oct 96   SAIC    Incorporated reviewer comments.

--      05 JAN 98   EDS     Remove incorrect subtest.

--!

with Report;

with Ada.Exceptions;

with Interfaces.COBOL;                                          -- N/A => ERROR

procedure CXB4007 is

begin

   Report.Test ("CXB4007", "Check that functions Valid, Length, To_Decimal " &

                           "and To_Binary specific to Byte_Array and "       &

                           "Binary_Format parameters produce correct results");

   Test_Block:

   declare

      use Interfaces.COBOL;

      use Ada.Exceptions;

      use type Interfaces.COBOL.Numeric;

      type Decimal_Type_1 is delta 0.1    digits  6;

      type Decimal_Type_2 is delta 0.01   digits  8;

      type Decimal_Type_3 is delta 0.001  digits 10;

      type Decimal_Type_4 is delta 0.0001 digits 12;

      package Pack_1 is new Decimal_Conversions(Decimal_Type_1);

      package Pack_2 is new Decimal_Conversions(Decimal_Type_2);

      package Pack_3 is new Decimal_Conversions(Decimal_Type_3);

      package Pack_4 is new Decimal_Conversions(Decimal_Type_4);

      TC_Dec_1      : Decimal_Type_1 := 12345.6;

      TC_Dec_2      : Decimal_Type_2 := 123456.78;

      TC_Dec_3      : Decimal_Type_3 := 1234567.890;

      TC_Dec_4      : Decimal_Type_4 := 12345678.9012;

      TC_Min_Length : Natural        := 1;

      TC_Max_Length : Natural        := 16;

      TC_Valid      : Boolean        := False;

   begin

      -- Check that the function Valid with Byte_Array and Binary_Format

      -- parameters returns True if the Byte_Array parameter corresponds to

      -- any value inside the range of type Num.

      if not Pack_1.Valid(Item   => Pack_1.To_Binary(TC_Dec_1,

                                                     High_Order_First),

                          Format => High_Order_First)                   or

         not Pack_1.Valid(Pack_1.To_Binary(0.0, Low_Order_First),

                          Format => Low_Order_First)

      then

         Report.Failed("Incorrect result from function Valid, using " &

                       "parameters that should return a positive result - 1");

      end if;

      TC_Valid := (Pack_2.Valid(Pack_2.To_Binary(TC_Dec_2, High_Order_First),

                                Format => High_Order_First)             and

                   Pack_2.Valid(Pack_2.To_Binary(0.01, Low_Order_First),

                                Format => Low_Order_First));

      if not TC_Valid then

         Report.Failed("Incorrect result from function Valid, using " &

                       "parameters that should return a positive result - 2");

      end if;

      if not Pack_3.Valid(Item   => Pack_3.To_Binary(TC_Dec_3,

                                                     Low_Order_First),

                          Format => Low_Order_First)                  or

         not Pack_3.Valid(Pack_3.To_Binary(0.001, High_Order_First),

                          Format => High_Order_First)                 or

         not Pack_3.Valid(Pack_3.To_Binary(123.456, Native_Binary),

                          Native_Binary)

      then

         Report.Failed("Incorrect result from function Valid, using " &

                       "parameters that should return a positive result - 3");

      end if;

      -- Check that function Valid returns False if the Byte_Array parameter

      -- corresponds to a value outside the range of Num.

      -- Note: use a Byte_Array value Item created by an instantiation of

      --       To_Binary with a larger Num type as the generic formal.

      if Pack_1.Valid(Item   => Pack_2.To_Binary(TC_Dec_2, Low_Order_First),

                      Format => Low_Order_First)                or

         Pack_2.Valid(Pack_3.To_Binary(TC_Dec_3, High_Order_First),

                      Format => High_Order_First)               or

         Pack_3.Valid(Pack_4.To_Binary(TC_Dec_4, Native_Binary),

                      Native_Binary)

      then

         Report.Failed("Incorrect result from function Valid, using " &

                       "parameters that should return a negative result");

      end if;

      -- Check that function Length with Binary_Format parameter will return

      -- the minimum length of a Byte_Array value required to hold any value

      -- of decimal type Num.

      if not (Pack_1.Length(Native_Binary)    >= TC_Min_Length and

              Pack_1.Length(Low_Order_First)  <= TC_Max_Length and

              Pack_2.Length(High_Order_First) >= TC_Min_Length and

              Pack_2.Length(Native_Binary)    <= TC_Max_Length and

              Pack_3.Length(Low_Order_First)  >= TC_Min_Length and

              Pack_3.Length(High_Order_First) <= TC_Max_Length and

              Pack_4.Length(Native_Binary)    >= TC_Min_Length and

              Pack_4.Length(Low_Order_First)  <= TC_Max_Length)

      then

         Report.Failed("Incorrect result from function Length");

      end if;

      -- Check that function To_Decimal with Byte_Array and Binary_Format

      -- parameters will return a decimal type value that corresponds to

      -- parameter Item (of type Byte_Array) under the specified Format.

      if Pack_1.To_Decimal(Item   => Pack_1.To_Binary(Item   => TC_Dec_1,

                                                      Format => Native_Binary),

                           Format => Native_Binary) /=

         TC_Dec_1

      then

         Report.Failed("Incorrect result from function To_Decimal - 1");

      end if;

      if Pack_3.To_Decimal(Pack_3.To_Binary(TC_Dec_3, High_Order_First),

                           Format => High_Order_First) /=

         TC_Dec_3

      then

         Report.Failed("Incorrect result from function To_Decimal - 2");

      end if;

      if Pack_4.To_Decimal(Pack_4.To_Binary(TC_Dec_4, Low_Order_First),

                           Low_Order_First) /=

         TC_Dec_4

      then

         Report.Failed("Incorrect result from function To_Decimal - 3");

      end if;

      -- Check that Conversion_Error is propagated by function To_Decimal

      -- if the Byte_Array parameter Item represents a decimal value outside

      -- the range of decimal type Num.

      -- Note: use a Byte_Array value Item created by an instantiation of

      --       To_Binary with a larger Num type as the generic formal.

      begin

         TC_Dec_4 := 99999.9001;

         TC_Dec_1 := Pack_1.To_Decimal(Pack_4.To_Binary(TC_Dec_4,

                                                        Native_Binary),

                                       Format => Native_Binary);

         if TC_Dec_1 = 99999.9 then

            Report.Comment("Minimize dead assignment optimization -- " &

                           "Should never be printed");

         end if;

         Report.Failed("Conversion_Error not raised following call to "   &

                       "function To_Decimal if the Byte_Array parameter " &

                       "Item represents a decimal value outside the "     &

                       "range of decimal type Num");

      exception

         when Conversion_Error   => null;  -- OK, expected exception.

         when The_Error : others =>

            Report.Failed(Exception_Name(The_Error) & " was incorrectly " &

                          "raised following call to function To_Decimal " &

                          "if the Byte_Array parameter Item represents "  &

                          "a decimal value outside the range of decimal " &

                          "type Num");

      end;

      -- Check that function To_Binary will produce a Byte_Array result that

      -- corresponds to the decimal type parameter Item, under the specified

      -- Binary_Format.

      -- Different ordering.

      TC_Dec_1 := 12345.6;

      if Pack_1.To_Binary(TC_Dec_1, Low_Order_First)  =

         Pack_1.To_Binary(TC_Dec_1, High_Order_First)

      then

         Report.Failed("Incorrect result from function To_Binary - 1");

      end if;

      -- Variable vs. literal.

      TC_Dec_2 := 12345.00;

      if Pack_2.To_Binary(TC_Dec_2, Native_Binary) /=

         Pack_2.To_Binary(12345.00, Native_Binary)

      then

         Report.Failed("Incorrect result from function To_Binary - 2");

      end if;

   exception

      when The_Error : others =>

         Report.Failed("The following exception was raised in the " &

                       "Test_Block: " & Exception_Name(The_Error));

   end Test_Block;

   Report.Result;

end CXB4007;