[3.0] 优化 ttl 相关测试

[NHZEX]

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (d12d7d4) 63.00% compared to head (3d8096b) 66.46%.

Additional details and impacted files

@@             Coverage Diff              @@
##                3.0     #638      +/-   ##
============================================
+ Coverage     63.00%   66.46%   +3.45%     
  Complexity    10913    10913              
============================================
  Files           868      868              
  Lines         29598    29603       +5     
============================================
+ Hits          18649    19675    +1026     
+ Misses        10949     9928    -1021     

see 75 files with indirect coverage changes

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