Adding tests for Echo#Host

[pafuent]

No description provided.

[codecov]

Codecov Report

Merging #1895 (38f870e) into master (1ac4a8f) will increase coverage by 0.32%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1895      +/-   ##
==========================================
+ Coverage   90.61%   90.94%   +0.32%     
==========================================
  Files          31       31              
  Lines        2782     2782              
==========================================
+ Hits         2521     2530       +9     
+ Misses        168      161       -7     
+ Partials       93       91       -2     

Impacted Files	Coverage Δ
router.go	95.69% <0.00%> (+0.66%)	⬆️
echo.go	93.80% <0.00%> (+2.16%)	⬆️

---

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 1ac4a8f...38f870e. Read the comment docs.

[aldas]

LGTM