`define ACE	7'b0001000
`define TWO	7'b0100100
`define THREE	7'b0110000
`define FOUR	7'b0011001
`define FIVE	7'b0010010
`define SIX	7'b0000010
`define SEVEN	7'b1111000
`define EIGHT	7'b0000000
`define NINE	7'b0010000
`define TEN	7'b1000000
`define JACK	7'b1100001
`define QUEEN	7'b0011000
`define KING	7'b0001001
`define BLANK	7'b1111111

module tb_card7seg();
	logic err;
	logic [3:0] SW;
	logic [6:0] HEX0;

	card7seg DUT(SW, HEX0);

	task check;
		input logic [6:0] expected;

		if (HEX0 !== expected) begin
			err = 1;
			$display("FAILED: HEX is incorrect.",);
		end
	endtask: check


	initial begin
		err = 0;

		SW = 4'd0;
		#5;
		check(`BLANK);
		#5;

		SW = 4'd1;
		#5;
		check(`ACE);
		#5;

		SW = 4'd2;
		#5;
		check(`TWO);
		#5;

		SW = 4'd3;
		#5;
		check(`THREE);
		#5;

		SW = 4'd4;
		#5;
		check(`FOUR);
		#5;

		SW = 4'd5;
		#5;
		check(`FIVE);
		#5;

		SW = 4'd6;
		#5;
		check(`SIX);
		#5;

		SW = 4'd7;
		#5;
		check(`SEVEN);
		#5;

		SW = 4'd8;
		#5;
		check(`EIGHT);
		#5;

		SW = 4'd9;
		#5;
		check(`NINE);
		#5;

		SW = 4'd10;
		#5;
		check(`TEN);
		#5;

		SW = 4'd11;
		#5;
		check(`JACK);
		#5;

		SW = 4'd12;
		#5;
		check(`QUEEN);
		#5;

		SW = 4'd13;
		#5;
		check(`KING);
		#5;

		if (~err)
			$display("All tests passed.");

		#10;
		$stop;
	end
endmodule