test(mtr):add double_float and func_sec_to_time(#497)

[shangyanwen]

Summary about this PR

Issue Number: close #497

Tests Check List

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Changelog

• New Feature
• Bug Fix
• Performance Improvement
• Build/Testing/CI/CD
• Documentation
• Not for changelog (changelog entry is not required)

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features

[mergify]

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[codecov]

Codecov Report

Base: 42.73% // Head: 42.73% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (039fef8) compared to base (e4b7a5e).
Patch has no changes to coverable lines.

❗ Current head 039fef8 differs from pull request most recent head cbf94cc. Consider uploading reports for the commit cbf94cc to get more accurate results

Additional details and impacted files

@@               Coverage Diff                @@
##           stonedb-5.7-dev    #1135   +/-   ##
================================================
  Coverage            42.73%   42.73%           
================================================
  Files                 1830     1830           
  Lines               395962   395938   -24     
================================================
+ Hits                169214   169219    +5     
+ Misses              226748   226719   -29     

Impacted Files	Coverage Δ
storage/innobase/include/ut0mutex.ic	71.42% <0.00%> (-23.81%)	⬇️
strings/str2int.c	72.72% <0.00%> (-6.07%)	⬇️
storage/innobase/mach/mach0data.cc	83.78% <0.00%> (-5.41%)	⬇️
storage/innobase/row/row0umod.cc	62.50% <0.00%> (-4.17%)	⬇️
sql/mdl.cc	66.11% <0.00%> (-3.33%)	⬇️
storage/innobase/sync/sync0arr.cc	53.38% <0.00%> (-0.85%)	⬇️
storage/innobase/srv/srv0srv.cc	83.05% <0.00%> (-0.56%)	⬇️
sql/mysqld.cc	68.12% <0.00%> (-0.53%)	⬇️
storage/innobase/rem/rem0rec.cc	68.59% <0.00%> (-0.51%)	⬇️
sql/sql_connect.cc	40.61% <0.00%> (-0.39%)	⬇️
... and 35 more

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[lujiashun]

LGTM