refactor: migrate on jest

[alexander-akait]

What kind of change does this PR introduce?

refactor

Did you add tests for your changes?

yep

Summary

Migrate on jest

Does this PR introduce a breaking change?

No

Other information

No

[hiroppy]

thanks!

[codecov]

Codecov Report

Merging #386 into master will decrease coverage by 0.19%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master     #386     +/-   ##
=========================================
- Coverage   96.96%   96.77%   -0.2%     
=========================================
  Files           7       12      +5     
  Lines         264      279     +15     
  Branches        0       82     +82     
=========================================
+ Hits          256      270     +14     
- Misses          8        9      +1

Impacted Files	Coverage Δ
test/fixtures/server-test/webpack.array.config.js	100% <0%> (ø)
...xtures/server-test/webpack.client.server.config.js	100% <0%> (ø)
...fixtures/server-test/webpack.querystring.config.js	100% <0%> (ø)
test/fixtures/server-test/webpack.config.js	100% <0%> (ø)
test/fixtures/stat-options.js	90% <0%> (ø)

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[hiroppy]

Thanks for adding run

[hiroppy]

LGTM, CI is green 🍏

[hiroppy]

We should change the number of reviewers with write access for merging.

[hiroppy]

I changed the number of approvers requested to 1.