test: Add static check && adjust Travis-CI && make ineffassign happy

[xiekeyi98]

What problem does this PR solve?

1. Add static check.
2. adjust Travis-CI, merge make build and make test .
3. make ineffassign happy.
4. tidy Makefile

What is changed and how it works?

It is clear to see, I check the error and add some static check.

Check List

Tests

• No code

Side effects

• Make CI slow.

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This change is 

[CLAassistant]

All committers have signed the CLA.

[codecov[bot]]

Codecov Report

Merging #21 into master will not change coverage. The diff coverage is n/a.

@@             Coverage Diff             @@
##             master        #21   +/-   ##
===========================================
  Coverage   78.5133%   78.5133%           
===========================================
  Files             7          7           
  Lines           861        861           
===========================================
  Hits            676        676           
  Misses          109        109           
  Partials         76         76