Add test for header middleware

[Ashwithabg]

#45

Co-authored-by: Ravi ravikumarkarn080@gmail.com

[codecov]

Codecov Report

Merging #57 into master will decrease coverage by 1.12%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #57      +/-   ##
==========================================
- Coverage   75.40%   74.27%   -1.13%     
==========================================
  Files           7        9       +2     
  Lines         187      206      +19     
==========================================
+ Hits          141      153      +12     
- Misses         44       51       +7     
  Partials        2        2              

Flag	Coverage Δ
#unittests	74.27% <ø> (-1.13%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
model/node.go	94.66% <0.00%> (ø)
utils/utils.go
handle/middlewares/cors.go	0.00% <0.00%> (ø)
lib/file/utils.go	100.00% <0.00%> (ø)
handle/middlewares/headers.go	100.00% <0.00%> (ø)

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[rodrigo-brito]

Hi @Ashwithabg, thank you for you contribution

[rodrigo-brito]

It looks great! Thank you for your contribution!

[Ashwithabg]

Thanks @rodrigo-brito
It was a good learning for me.