init units and bins, test 8

calc_tb.sv

@@ -25,7 +25,7 @@ endgroup: cg
 
 covergroup cg_lines @(posedge clk);
   // 
-  coverpoint cov_lines {
+  cov_lines: coverpoint cov_lines {
     bins c_lines[] = (0 => "calc_logic.sv:37", 1 => "calc_logic.sv:38", 2 => "calc_logic.sv:39");
   }
 endgroup