`default_nettype none
module Buffer16_tb();
	
	// IN,OUT
	reg [15:0] in;
	wire [15:0] out;

	// Part
	Buffer16 BUFFER16(
		.in(in),
		.out(out)
	);

	// Compare
	wire [15:0] out_cmp;
	assign out_cmp = in;
	
	reg fail = 0;
	reg [15:0] n = 0;
	task check;
		#1
		if (out != out_cmp) 
			begin
				$display("FAIL: in=%16b, out=%16b",in,out);
				fail=1;
			end
	endtask
	  
  	// Test	
	initial begin
  		$dumpfile("Buffer16_tb.vcd");
  		$dumpvars(0, Buffer16_tb);
		
		$display("------------------------");
		$display("Testbench: Buffer16");
		
		for (n=0; n<10000;n=n+1) 
			begin
				in=$random;
				check();
		
			end
			
		if (fail==0) $display("passed");
		$display("------------------------");
		$finish;
	end

endmodule