事件覆盖：

program test;
    bit [0:3] y;
    bit [0:2] values[$]= '{3,4,5,6};
   
    covergroup cg0;
       cover_point_y : coverpoint y {
                        bins tran_34 = (3=>4);
                        bins tran_35 = (3=>5);
                        bins tran_56 = (5=>6);
                        }                        
    endgroup
   
    cg0 cg_inst = new();
  
    initial
      foreach(values[i])
      begin
        y = values[i];
        cg_inst.sample();
        $display("\n 001 -_- Now coverage is %00d",cg_inst.get_coverage());
      end
   
endprogram

#  001 -_- Now coverage is 0
#
#  001 -_- Now coverage is 33
#
#  001 -_- Now coverage is 33
#
#  001 -_- Now coverage is 67

COVERGROUP COVERAGE:
------------------------------------------------------------------------------------
Covergroup                                             Metric      Goal/ Status    
                                                                At Least           
------------------------------------------------------------------------------------
 TYPE /test/cg0                                         66.6%        100 Uncovered 
    Coverpoint cg0::cover_point_y                       66.6%        100 Uncovered 
        bin tran_34                                         1          1 Covered   
        bin tran_35                                         0          1 ZERO      
        bin tran_56                                         1          1 Covered   

TOTAL COVERGROUP COVERAGE: 66.6%  COVERGROUP TYPES: 1