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-----------------------------------------------------------------------
 
----                                                               ----
 
---- Present - a lightweight block cipher project                  ----
 
----                                                               ----
 
---- This file is part of the Present - a lightweight block        ----
 
---- cipher project                                                ----
 
---- http://www.http://opencores.org/project,present               ----
 
----                                                               ----
 
---- Description:                                                  ----
 
----     Substitution layer test bench of Present encoder.         ----
 
---- Nothing special.                                              ----
 
---- To Do:                                                        ----
 
----                                                               ----
 
---- Author(s):                                                    ----
 
---- - Krzysztof Gajewski, gajos@opencores.org                     ----
 
----                       k.gajewski@gmail.com                    ----
 
----                                                               ----
 
-----------------------------------------------------------------------
 
----                                                               ----
 
---- Copyright (C) 2013 Authors and OPENCORES.ORG                  ----
 
----                                                               ----
 
---- This source file may be used and distributed without          ----
 
---- restriction provided that this copyright statement is not     ----
 
---- removed from the file and that any derivative work contains   ----
 
---- the original copyright notice and the associated disclaimer.  ----
 
----                                                               ----
 
---- This source file is free software; you can redistribute it    ----
 
---- and-or modify it under the terms of the GNU Lesser General    ----
 
---- Public License as published by the Free Software Foundation;  ----
 
---- either version 2.1 of the License, or (at your option) any    ----
 
---- later version.                                                ----
 
----                                                               ----
 
---- This source 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 Lesser General Public License for more   ----
 
---- details.                                                      ----
 
----                                                               ----
 
---- You should have received a copy of the GNU Lesser General     ----
 
---- Public License along with this source; if not, download it    ----
 
---- from http://www.opencores.org/lgpl.shtml                      ----
 
----                                                               ----
 
-----------------------------------------------------------------------
 
LIBRARY ieee;
 
USE ieee.std_logic_1164.ALL;
 
USE ieee.std_logic_unsigned.all;
 
USE ieee.numeric_std.ALL;
 
 
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ENTITY sLayerTB IS
 
END sLayerTB;
 
 
 
ARCHITECTURE behavior OF sLayerTB IS
 
 
 
    -- Component Declaration for the Unit Under Test (UUT)
 
 
 
    COMPONENT slayer
 
    PORT(
 
         input : IN  std_logic_vector(3 downto 0);
 
         output : OUT  std_logic_vector(3 downto 0)
 
        );
 
    END COMPONENT;
 
 
 
 
 
   --Inputs
 
   signal clk : std_logic := '0';
 
   signal reset : std_logic := '0';
 
 
 
        --BiDirs
 
   signal input : std_logic_vector(3 downto 0);
 
   signal output : std_logic_vector(3 downto 0);
 
 
 
   -- Clock period definitions
 
   constant clk_period : time := 1ns;
 
 
 
BEGIN
 
 
 
        -- Instantiate the Unit Under Test (UUT)
 
   uut: slayer PORT MAP (
 
          input => input,
 
          output => output
 
        );
 
 
 
   -- Clock process definitions
 
   clk_process :process
 
   begin
 
                clk <= '0';
 
                wait for clk_period/2;
 
                clk <= '1';
 
                wait for clk_period/2;
 
   end process;
 
 
 
 
 
   -- Stimulus process
 
   stim_proc: process
 
   begin
 
      -- hold reset state for 100ms.
 
                reset <= '1';
 
      wait for 100ns;
 
                reset <= '0';
 
      wait for clk_period;
 
                input <= x"0";
 
      wait for clk_period;
 
                input <= x"A";
 
      wait for clk_period;
 
                input <= x"F";
 
      wait for clk_period;
 
      -- insert stimulus here 
 
                assert false severity failure;
 
   end process;
 
 
 
END;
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