test: achieve 100% test coverage for blas/ext/base/dnansumkbn2

[Neerajpathak07]

Resolves #3074

Description

This pull request:

• Adds test cases to achieve 100% test coverage for the file:- blas/ext/base/dnansumkbn2

Related Issues

This pull request:

• resolves [RFC]: Incomplete code coverage for blas/ext/base/dnansumkbn2 #3074

Questions

No.

Other

No.

Checklist

• Read, understood, and followed the contributing guidelines

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@stdlib-js/reviewers

[Planeshifter]

Thanks for opening a PR!

Please have a look at the failing CI checks.
Notice also that the .ndarray method has a different function signature than the main dnansumkbn2 one, expecting four arguments.

[Neerajpathak07]

@Planeshifter sure I'll look into the falling checks and implement the necessary changes.

[Neerajpathak07]

@Planeshifter I'm finding it difficult to set up an environment and run those test cases could you help me a bit?

[headlessNode]

@Neerajpathak07 Follow this guide https://github.com/stdlib-js/stdlib/blob/develop/docs/development.md