test: unit test for cri/stream/errors.go

[YaoZengzeng]

Signed-off-by: YaoZengzeng [email protected]

Ⅰ. Describe what this PR did

Ⅱ. Does this pull request fix one issue?

#1756

Ⅲ. Describe how you did it

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov-io]

Codecov Report

Merging #1909 into master will increase coverage by 0.12%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1909      +/-   ##
==========================================
+ Coverage   62.54%   62.67%   +0.12%     
==========================================
  Files         200      200              
  Lines       15567    15567              
==========================================
+ Hits         9737     9757      +20     
+ Misses       4580     4566      -14     
+ Partials     1250     1244       -6

Flag	Coverage Δ
#criv1alpha1test	33.26% <ø> (+0.05%)	⬆️
#criv1alpha2test	33.74% <ø> (-0.02%)	⬇️
#integrationtest	37.88% <ø> (-0.02%)	⬇️
#unittest	20.4% <ø> (-0.09%)	⬇️

Impacted Files	Coverage Δ
ctrd/image.go	76.73% <0%> (-4.46%)	⬇️
cri/v1alpha2/cri.go	66.13% <0%> (+0.17%)	⬆️
cri/v1alpha1/cri.go	65.22% <0%> (+0.18%)	⬆️
daemon/mgr/container.go	53.46% <0%> (+0.31%)	⬆️
ctrd/container.go	50.17% <0%> (+0.68%)	⬆️
daemon/logger/jsonfile/utils.go	73.17% <0%> (+1.62%)	⬆️
cri/stream/httpstream/spdy/upgrade.go	60% <0%> (+5.71%)	⬆️
cri/stream/errors.go	100% <0%> (+100%)	⬆️

[starnop]

LGTM.