module test_bench;
reg [7:0] data;
reg [2:0] amt;
wire [7:0] out;

barrel_shifter dut(data, amt, out);

initial begin
data= 8'hf0;
amt=0;
forever #10 amt= amt+1;
end

initial begin
$monitor("\t\t data: %b  shifting amount: %d  output: %b", data, amt, out);
#80 $finish;
end
endmodule