module tb_led_work_top;

    // Inputs
    reg I_clk;
    reg I_rst_n;

    // Outputs
    wire [3:0] O_led_out;

    // Instantiate the Unit Under Test (UUT)
    led_work_top U_led_work_top (
        .I_clk(I_clk), 
        .I_rst_n(I_rst_n), 
        .O_led_out(O_led_out)
    );

    initial begin
        // Initialize Inputs
        I_clk = 0;
        I_rst_n = 0;

        // Wait 100 ns for global reset to finish
        #100;
        I_rst_n = 1;
        
        // Add stimulus here

    end
    
    always #5 I_clk = ~I_clk ;
      
endmodule