[Task] VX-214: Unit test for prometheus handler

[WakeupTsai]

No description provided.

[codecov-io]

Codecov Report

Merging #170 into develop will increase coverage by 6.45%.
The diff coverage is 100%.

@@             Coverage Diff             @@
##           develop     #170      +/-   ##
===========================================
+ Coverage    71.55%   78.01%   +6.45%     
===========================================
  Files           42       41       -1     
  Lines         2011     2001      -10     
===========================================
+ Hits          1439     1561     +122     
+ Misses         496      332     -164     
- Partials        76      108      +32

Impacted Files	Coverage Δ
src/net/http/response.go	93.02% <ø> (ø)	⬆️
src/server/route_filter.go	0% <ø> (ø)	⬆️
src/prometheuscontroller/expression.go	85.95% <ø> (ø)	⬆️
src/server/handler_pod.go	73.14% <100%> (ø)	⬆️
src/server/handler_service.go	75.23% <100%> (ø)	⬆️
src/server/handler_storage.go	82.24% <100%> (ø)	⬆️
src/server/handler_network.go	73.61% <100%> (ø)	⬆️
src/server/handler_volume.go	75.28% <100%> (ø)	⬆️
src/server/handler_version.go	100% <100%> (+100%)	⬆️
src/server/route.go	81.94% <0%> (+27.77%)	⬆️
... and 1 more

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