add more test

[suchen-sci]

No description provided.

[codecov-commenter]

Codecov Report

Merging #632 (e18362a) into pipeline (21f959c) will increase coverage by 7.86%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##           pipeline     #632      +/-   ##
============================================
+ Coverage     72.25%   80.12%   +7.86%     
============================================
  Files            96       94       -2     
  Lines         10810    10381     -429     
============================================
+ Hits           7811     8318     +507     
+ Misses         2516     1588     -928     
+ Partials        483      475       -8     

Impacted Files	Coverage Δ
pkg/filters/httpbuilder/httpbuilder.go	78.72% <100.00%> (+26.03%)	⬆️
pkg/filters/registry.go	100.00% <100.00%> (+100.00%)	⬆️
pkg/protocols/httpprot/response.go	84.32% <100.00%> (+34.32%)	⬆️
pkg/object/meshcontroller/spec/spec.go
pkg/object/meshcontroller/spec/selector.go
pkg/object/mqttproxy/client.go	80.63% <0.00%> (+0.90%)	⬆️
pkg/cluster/cluster.go	60.56% <0.00%> (+0.93%)	⬆️
pkg/object/autocertmanager/autocertmanager.go	93.46% <0.00%> (+2.04%)	⬆️
pkg/filters/requestadaptor/requestadaptor.go	77.96% <0.00%> (+3.38%)	⬆️
pkg/object/httpserver/runtime.go	60.96% <0.00%> (+3.94%)	⬆️
... and 19 more

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