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-- CXB4006.A

--

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--                                    DISCLAIMER

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--*

--

-- OBJECTIVE:

--      Check that the function Valid with Packed_Decimal and Packed_Format

--      parameters returns True if Item (the Packed_Decimal parameter) has

--      a value consistent with the Packed_Format parameter.

--

--      Check that the function Length with Packed_Format parameter returns

--      the minimal length of a Packed_Decimal value sufficient to hold any

--      value of type Num when represented according to parameter Format.

--

--      Check that the function To_Decimal with Packed_Decimal and

--      Packed_Format parameters produces a decimal type value corresponding

--      to the Packed_Decimal parameter value Item, under the conditions of

--      the Packed_Format parameter Format.

--

--      Check that the function To_Packed with Decimal (Num) and

--      Packed_Format parameters produces a Packed_Decimal result that

--      corresponds to the decimal parameter under conditions of the

--      Packed_Format parameter.

--

--      Check that Conversion_Error is propagated by function To_Packed if

--      the value of the decimal parameter Item is negative and the specified

--      Packed_Format parameter is Packed_Unsigned.

--

--

-- TEST DESCRIPTION:

--      This test checks the results from instantiated versions of

--      several functions that deal with parameters or results of type

--      Packed_Decimal.  Since the rules for the formation of Packed_Decimal

--      values are implementation defined, several of the subtests cannot

--      directly check the accuracy of the results produced. Instead, they

--      verify that the result is within a range of possible values, or

--      that the result of one function can be converted back to the original

--      actual parameter using a "mirror image" conversion function.

--

-- 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:

--      12 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.

--

--!

with Report;

with Ada.Exceptions;

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

procedure CXB4006 is

begin

   Report.Test ("CXB4006", "Check that the functions Valid, Length, "   &

                           "To_Decimal, and To_Packed specific to "     &

                           "Packed_Decimal 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;

   begin

      -- Check that the function Valid with Packed_Decimal and Packed_Format

      -- parameters returns True if Item (the Packed_Decimal parameter) has

      -- a value consistent with the Packed_Format parameter.

      -- Note: Since the formation rules for Packed_Decimal values are

      --       implementation defined, the parameter values here are

      --       created by function To_Packed.

      TC_Dec_1 := 1434.3;

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

                                                     Packed_Unsigned),

                          Format => Packed_Unsigned)

      then

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

      end if;

      TC_Dec_2 := -4321.03;

      if not Pack_2.Valid(Pack_2.To_Packed(TC_Dec_2, Packed_Signed),

                          Format => Packed_Signed)                   or

         Pack_2.Valid(Pack_2.To_Packed(TC_Dec_2, Packed_Signed),

                      Format => Packed_Unsigned)

      then

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

      end if;

      TC_Dec_3 := 1234567.890;

      if not Pack_3.Valid(Pack_3.To_Packed(TC_Dec_3, Packed_Unsigned),

                          Packed_Unsigned)

      then

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

      end if;

      TC_Dec_4 := -234.6789;

      if not Pack_4.Valid(Item   => Pack_4.To_Packed(TC_Dec_4,

                                                     Packed_Signed),

                          Format => Packed_Signed)                        or

         Pack_4.Valid(Item   => Pack_4.To_Packed(TC_Dec_4, Packed_Signed),

                      Format => Packed_Unsigned)

      then

         Report.Failed("Incorrect result from function Valid - 4");

      end if;

      -- Check that the function Length with Packed_Format parameter returns

      -- the minimal length of a Packed_Decimal value sufficient to hold any

      -- value of type Num when represented according to parameter Format.

      if NOT (Pack_1.Length(Packed_Signed)   >= TC_Min_Length AND

              Pack_1.Length(Packed_Signed)   <= TC_Max_Length AND

              Pack_1.Length(Packed_Unsigned) >= TC_Min_Length AND

              Pack_1.Length(Packed_Unsigned) <= TC_Max_Length)

      then

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

      end if;

      if NOT (Pack_2.Length(Packed_Signed)   >= TC_Min_Length AND

              Pack_2.Length(Packed_Signed)   <= TC_Max_Length AND

              Pack_2.Length(Packed_Unsigned) >= TC_Min_Length AND

              Pack_2.Length(Packed_Unsigned) <= TC_Max_Length)

      then

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

      end if;

      if NOT (Pack_3.Length(Packed_Signed)   >= TC_Min_Length AND

              Pack_3.Length(Packed_Signed)   <= TC_Max_Length AND

              Pack_3.Length(Packed_Unsigned) >= TC_Min_Length AND

              Pack_3.Length(Packed_Unsigned) <= TC_Max_Length)

      then

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

      end if;

      if NOT (Pack_4.Length(Packed_Signed)   >= TC_Min_Length AND

              Pack_4.Length(Packed_Signed)   <= TC_Max_Length AND

              Pack_4.Length(Packed_Unsigned) >= TC_Min_Length AND

              Pack_4.Length(Packed_Unsigned) <= TC_Max_Length)

      then

         Report.Failed("Incorrect result from function Length - 4");

      end if;

      -- Check that the function To_Decimal with Packed_Decimal and

      -- Packed_Format parameters produces a decimal type value corresponding

      -- to the Packed_Decimal parameter value Item, under the conditions of

      -- the Packed_Format parameter Format.

      begin

         TC_Dec_1 := 1234.5;

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

                                                         Packed_Unsigned),

                              Format => Packed_Unsigned) /= TC_Dec_1

         then

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

         end if;

      exception

         when The_Error : others =>

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

                          "subtest 1 of function To_Decimal: "     &

                          Exception_Name(The_Error));

      end;

      begin

         TC_Dec_2 := -123456.50;

         if Pack_2.To_Decimal(Pack_2.To_Packed(TC_Dec_2, Packed_Signed),

                              Format => Packed_Signed) /= TC_Dec_2

         then

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

         end if;

      exception

         when The_Error : others =>

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

                          "subtest 2 of function To_Decimal: "     &

                          Exception_Name(The_Error));

      end;

      begin

         TC_Dec_3 := 1234567.809;

         if Pack_3.To_Decimal(Pack_3.To_Packed(TC_Dec_3, Packed_Unsigned),

                              Packed_Unsigned) /= TC_Dec_3

         then

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

         end if;

      exception

         when The_Error : others =>

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

                          "subtest 3 of function To_Decimal: "     &

                          Exception_Name(The_Error));

      end;

      begin

         TC_Dec_4 := -789.1234;

         if Pack_4.To_Decimal(Item   => Pack_4.To_Packed(TC_Dec_4,

                                                         Packed_Signed),

                              Format => Packed_Signed) /= TC_Dec_4

         then

            Report.Failed("Incorrect result from function To_Decimal - 4");

         end if;

      exception

         when The_Error : others =>

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

                          "subtest 4 of function To_Decimal: "     &

                          Exception_Name(The_Error));

      end;

      -- Check that the function To_Packed with Decimal (Num) and

      -- Packed_Format parameters produces a Packed_Decimal result that

      -- corresponds to the decimal parameter under conditions of the

      -- Packed_Format parameter.

      if Pack_1.To_Packed(Item =>  123.4, Format => Packed_Unsigned) =

         Pack_1.To_Packed(Item => -123.4, Format => Packed_Signed)

      then

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

      end if;

      if Pack_2.To_Packed( 123.45, Format => Packed_Unsigned) =

         Pack_2.To_Packed(-123.45, Format => Packed_Signed)

      then

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

      end if;

      if Pack_3.To_Packed(Item =>  123.456, Format => Packed_Unsigned) =

         Pack_3.To_Packed(Item => -123.456, Format => Packed_Signed)

      then

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

      end if;

      if (Pack_4.To_Packed( 123.4567, Packed_Unsigned)     =

          Pack_4.To_Packed(-123.4567, Packed_Signed))       or

         (Pack_4.To_Packed(12345678.9012, Packed_Unsigned) =

          Pack_4.To_Packed(12345678.9013, Packed_Unsigned)) or

         (Pack_4.To_Packed(12345678.9012, Packed_Unsigned) =

          Pack_4.To_Packed(22345678.9012, Packed_Unsigned))

      then

         Report.Failed("Incorrect result from function To_Packed - 4");

      end if;

      -- Check that Conversion_Error is propagated by function To_Packed if

      -- the value of the decimal parameter Item is negative and the

      -- specified Packed_Format parameter is Packed_Unsigned.

      begin

         if Pack_1.To_Packed(Item => -12.3, Format => Packed_Unsigned) =

            Pack_1.To_Packed(Item =>  12.3, Format => Packed_Signed)

         then

            Report.Comment("Should never be printed");

         end if;

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

                       "function To_Packed with a negative parameter "  &

                       "Item and Packed_Format parameter Packed_Unsigned");

      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_Packed "  &

                          "with a negative parameter Item and "           &

                          "Packed_Format parameter Packed_Unsigned");

      end;

   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 CXB4006;