`timescale 1ns / 1ps
module tb_width_convert ();


    reg clk = 1;
    reg rst = 1;
    always #(2) clk <= ~clk;

    initial begin
        #10 rst <= 1'b0;
    end

    reg  [31:0] data_in;
    reg         data_in_valid;
    wire        data_in_ready;
    wire        data_out_valid;
    wire [ 0:0] data_out;

    width_convert #(
        .INPUT_WIDTH (32),
        .OUTPUT_WIDTH(1)
    ) u_width_convert (
        .clk           (clk),
        .rst           (rst),
        .data_in_valid (data_in_valid),
        .data_in_ready (data_in_ready),
        .data_in       (data_in),
        .data_out_valid(data_out_valid),
        .data_out      (data_out)
    );

    reg [5:0] cnt_startup;
    reg [3:0] cnt_data_in;
    always @(posedge clk) begin
        if (rst) begin
            cnt_startup <= 0;
        end
        else if (cnt_startup < 6'b111111) begin
            cnt_startup <= cnt_startup + 1;
        end
    end

    reg [5:0] cnt_in;
    localparam CNT_IN_MAX = 32;
    always @(posedge clk) begin
        if (rst) begin
            cnt_in <= 0;
        end
        else if (cnt_in == CNT_IN_MAX) begin
            cnt_in <= 0;
        end
        else begin
            cnt_in <= cnt_in + 1;
        end
    end

    always @(posedge clk) begin
        if (rst) begin
            data_in     <= $random();
            cnt_data_in <= 0;
        end
        else if (cnt_startup == 6'b111111 && cnt_in == CNT_IN_MAX && cnt_data_in < 5) begin
            data_in     <= $random();
            cnt_data_in <= cnt_data_in + 1;
        end
    end

    always @(posedge clk) begin
        // if (cnt_startup == 6'b111111 && cnt_in == CNT_IN_MAX) begin
        //     data_in_valid <= 1;
        // end
        // else begin
        //     data_in_valid <= 0;
        // end
        if (rst) begin
            data_in_valid <= 0;
        end
        else if (cnt_startup == 6'b111_111 && cnt_data_in < 5) begin
            data_in_valid <= 1;
        end
        else begin
            data_in_valid <= 0;
        end

    end




endmodule