Test: Improve controller/user ut coverage & bug fix

[lqs469]

Checklist

• [x] npm test passes
• [x] tests and/or benchmarks are included
• [ ] documentation is changed or added
• [x] commit message follows commit guidelines

Affected core subsystem(s)

controller/user

Description of change

• fix some bug
• controller/user unit test.

[codecov[bot]]

Codecov Report

Merging #75 into master will increase coverage by 0.89%. The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #75      +/-   ##
==========================================
+ Coverage   89.22%   90.12%   +0.89%     
==========================================
  Files          34       34              
  Lines        1234     1235       +1     
==========================================
+ Hits         1101     1113      +12     
+ Misses        133      122      -11

Impacted Files	Coverage Δ
app/controller/user.js	100% <100%> (+4.54%)	:arrow_up:
config/config.default.js	100% <100%> (ø)	:arrow_up:
app.js	55.76% <0%> (+7.69%)	:arrow_up:

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