// test bench for the MUX2 module
module MUX2_tb ();
  logic SEL, I, J;  // simulated inputs
  logic V;          // net for reading output

  // instance of module we want to test ("device under test")
  MUX2 dut (.V(V), .SEL(SEL), .I(I), .J(J));

  int i;
  initial  // build stimulus (test vectors)
  begin    // start of "block" of code
    for(i = 0; i < 8; i = i + 1) begin
      {SEL, I, J} = i;  #10;
    end
  end      // end of "block" of code

endmodule  // MUX2_tb