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`timescale 1us/1us
module counter_tb;
logic clk_i, store;
logic [15:0] in, res;
counter uut (
.cl(clk_i),
.X(in),
.count(res),
.st(store)
);
string filename;
initial begin
`ifdef DUMP_FILE_NAME
filename=`DUMP_FILE_NAME;
`else
filename="counter.lxt2";
`endif
$dumpfile(filename); $dumpvars();
clk_i = 0;
store = 0;
in = 0;
end
always #10 clk_i = ~clk_i;
initial begin
#200
@(posedge clk_i);
store = 1;
in = 16'd834;
repeat(3) begin
@(posedge clk_i);
assert (res == 834)
else $error("Expected 834, got %d", res);
end
store = 0;
@(posedge clk_i);
assert (res == 835)
else $error("Expected 835, got %d", res);
#30
$finish();
end
endmodule
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