Fix UT

[928PJY]

and use assert instead of chai since it cannot handle error equality, will remove all chai usage in the next PR: chaijs/chai#1065

[codecov-io]

Codecov Report

Merging #55 into master will decrease coverage by 2.36%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #55      +/-   ##
==========================================
- Coverage   90.75%   88.38%   -2.37%     
==========================================
  Files          15       21       +6     
  Lines         530      689     +159     
  Branches       40       52      +12     
==========================================
+ Hits          481      609     +128     
- Misses         39       66      +27     
- Partials       10       14       +4

Flag	Coverage Δ
#component	71.46% <100%> (?)
#unit	90.75% <ø> (ø)	⬆️

Impacted Files	Coverage Δ
src/credential/credentialController.ts	91.57% <100%> (ø)
src/common/uriEventHandler.ts	100% <0%> (ø)
src/shared.ts	88.88% <0%> (ø)
src/error/timeOutError.ts	100% <0%> (ø)
src/utils/utils.ts	41.66% <0%> (ø)
src/config.ts	100% <0%> (ø)
src/common/loggingEvents.ts	96.58% <0%> (+2.56%)	⬆️
src/credential/keyChain.ts	80.76% <0%> (+11.53%)	⬆️

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