add test for tag, ref #1274

[silentcloud]

This change is 

[codecov]

Codecov Report

Merging #1516 into master will increase coverage by 0.48%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1516      +/-   ##
==========================================
+ Coverage   65.34%   65.83%   +0.48%     
==========================================
  Files         229      229              
  Lines        2271     2271              
  Branches      699      699              
==========================================
+ Hits         1484     1495      +11     
+ Misses        786      775      -11     
  Partials        1        1

Flag	Coverage Δ
#rn	79.81% <ø> (ø)	⬆️
#web	65.12% <ø> (+0.5%)	⬆️

Impacted Files	Coverage Δ
components/tag/index.web.tsx	82.05% <0%> (+28.2%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 61f53b8...2532974. Read the comment docs.