`timescale 1ns / 1ps
//////////////////////////////////////////////////////////////////////////////////
// Company:
// Engineer:
//
// Create Date: 09/19/2019 02:26:10 PM
// Design Name:
// Module Name: tb_Struct_Decoder
// Project Name:
// Target Devices:
// Tool Versions:
// Description:
//
// Dependencies:
//
// Revision:
// Revision 0.01 - File Created
// Additional Comments:
//
//////////////////////////////////////////////////////////////////////////////////


module tb_Struct_Decoder;

    reg e;
    reg a;
    reg b;
    reg c;

    wire d0;
    wire d1;
    wire d2;
    wire d3;
    wire d4;
    wire d5;
    wire d6;
    wire d7;

    //instantiate uut (unit under test)
    Struct_Decoder uut(
    .e(e),
    .a(a),
    .b(b),
    .c(c),
    .d0(d0),
    .d1(d1),
    .d2(d2),
    .d3(d3),
    .d4(d4),
    .d5(d5),
    .d6(d6),
    .d7(d7),
    );

   initial begin

    e = 0;
    a = 0;
    b = 0;
    c = 0;

    #50

    e = 0;
    a = 0;
    b = 0;
    c = 0;
    $display("TC01");
    if ( d0 != 'b0 ) $display ("Result is wrong");

    e = 0;
    a = 0;
    b = 0;
    c = 1;
    #50;
    $display("TC02");
    if ( d1 != 'b0 ) $display ("Result is wrong");

    e = 0;
    a = 0;
    b = 1;
    c = 0;
    #50;
    $display("TC03");
    if ( d2 != 'b0 ) $display ("Result is wrong");

    e = 0;
    a = 0;
    b = 1;
    c = 1;
    #50;
    $display("TC04");
    if ( d3 != 'b0 ) $display ("Result is wrong");

    e = 0;
    a = 1;
    b = 0;
    c = 0;
    #50;
    $display("TC05");
    if ( d4 != 'b0 ) $display ("Result is wrong");

    e = 0;
    a = 1;
    b = 0;
    c = 1;
    #50;
    $display("TC06");
    if ( d5 != 'b0 ) $display ("Result is wrong");

    e = 0;
    a = 1;
    b = 1;
    c = 0;
    #50;
    $display("TC07");
    if ( d6 != 'b0 ) $display ("Result is wrong");

    e = 0;
    a = 1;
    b = 1;
    c = 1;
    #50;
    $display("TC08");
    if ( d7 != 'b0 ) $display ("Result is wrong");

    e = 1;
    a = 0;
    b = 0;
    c = 0;
    #50;
    $display("TC11");
    if ( d0 != 'b1 ) $display ("Result is wrong");

    e = 1;
    a = 0;
    b = 0;
    c = 1;
    #50;
    $display("TC12");
    if ( d1 != 'b1 ) $display ("Result is wrong");

    e = 1;
    a = 0;
    b = 1;
    c = 0;
    #50;
    $display("TC13");
    if ( d2 != 'b1 ) $display ("Result is wrong");

    e = 1;
    a = 0;
    b = 1;
    c = 1;
    #50;
    $display("TC14");
    if ( d3 != 'b1 ) $display ("Result is wrong");

    e = 1;
    a = 1;
    b = 0;
    c = 0;
    #50;
    $display("TC15");
    if ( d4 != 'b1 ) $display ("Result is wrong");

    e = 1;
    a = 1;
    b = 0;
    c = 1;
    #50;
    $display("TC16");
    if ( d5 != 'b1 ) $display ("Result is wrong");

    e = 1;
    a = 1;
    b = 1;
    c = 0;
    #50;
    $display("TC17");
    if ( d6 != 'b1 ) $display ("Result is wrong");

    e = 1;
    a = 1;
    b = 1;
    c = 1;
    #50;
    $display("TC18");
    if ( d7 != 'b1 ) $display ("Result is wrong");

    end

endmodule