CristalCaveGem » LustreC » Lustrec-Tests

-- Copyright (C) 2001 Bill Billowitch.

-- Some of the work to develop this test suite was done with Air Force

-- support.  The Air Force and Bill Billowitch assume no

-- responsibilities for this software.

-- This file is part of VESTs (Vhdl tESTs).

-- VESTs is free software; you can redistribute it and/or modify it

-- under the terms of the GNU General Public License as published by the

-- Free Software Foundation; either version 2 of the License, or (at

-- your option) any later version. 

-- VESTs is distributed in the hope that it will be useful, but WITHOUT

-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

-- FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

-- for more details. 

-- You should have received a copy of the GNU General Public License

-- along with VESTs; if not, write to the Free Software Foundation,

-- Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 

-- ---------------------------------------------------------------------

--

-- $Id: tc1703.vhd,v 1.2 2001-10-26 16:29:42 paw Exp $

-- $Revision: 1.2 $

--

-- ---------------------------------------------------------------------

ENTITY c09s02b00x00p05n01i01703ent IS

END c09s02b00x00p05n01i01703ent;

ARCHITECTURE c09s02b00x00p05n01i01703arch OF c09s02b00x00p05n01i01703ent IS

  signal s : boolean := false;

BEGIN

  TESTING: PROCESS

    type result_type is (fail, pass);

    variable result : result_type := fail;

    variable i, j   : integer;

    variable k   : integer := 0;

  BEGIN

    --

    -- Test all sequential statements in this process

    --

    s <= true;                        -- signal assignment        

    j := 1;                           -- variable assignment

    i := 0;

    L1: while  ( i < 10 )  loop       -- conditional loop

      if i > 2 then

        exit;

      end if;

      case i is

        when 0 =>

          L2: for j in 1 to 3 loop

            case j is

              when 3 =>       -- should never execute because of

                i := i + 1; -- alternative 2

                k := 1;

                exit;

                assert false

                  report "exit in loop 2 case failed."

                  severity note;

              when 2 =>

                i := i + 1;

                next L1;

                k := 1;

                assert false     -- should never execute

                  report "next in loop 2 case failed."

                  severity note;

              when 1 =>

                assert false

                  report "first iteration of loop 2."

                  severity note ;

                next;     -- applies to loop L2

              when others =>

                --

                -- This should never be executed but is

                -- required by the 1076-1987 spec. which

                -- says the subtype of 'j' is the same as

                -- the base type (integer) and not constrained

                -- to the range "1 to 3".

                --

                k := 1;

                assert false

                  report "Should never get here."

                  severity note ;

            end case;

            k := 1;

            assert false      -- should never execute

              report "next in loop 2 failed."

              severity note;

          end loop L2;

        when 2 =>

          s <= false after 5 ns;

          wait for 6 ns;

          assert not s

            report "wait statement in loop L1 failed."

            severity note ;

          i := i +1;

        when 1 =>

          null;

          assert false

            report "null statement and next statement worked."

            severity note ;

          i := i +1;

        when others =>

          k := 1;

          assert false

            report "exit in if statement in loop L1 failed."

            severity note ;

          exit;

      end case;

    end loop L1;

    wait for 50 ns;

    assert NOT(s=false and k = 0 and j=1) 

      report "***PASSED TEST: c09s02b00x00p05n01i01703" 

      severity NOTE;

    assert (s=false and k = 0 and j=1) 

      report "***FAILED TEST: c09s02b00x00p05n01i01703 - Process statement execution failed." 

      severity ERROR;

    wait;

  END PROCESS TESTING;

END c09s02b00x00p05n01i01703arch;