Improve unit test coverage in pkg/util/netsh/

[mengjiao-liu]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

Improve unit test code coverage and readability in pkg/util/netsh/

Run test coverage command:

go test -cover ./pkg/util/netsh

Befor:

ok      k8s.io/kubernetes/pkg/util/netsh        0.842s  coverage: 98.5% of statements

After:

ok      k8s.io/kubernetes/pkg/util/netsh        0.997s  coverage: 100.0% of statements

Which issue(s) this PR fixes:

Ref #97355

Special notes for your reviewer:

Does this PR introduce a user-facing change?

NONE

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

[k8s-ci-robot]

@mengjiao-liu: This issue is currently awaiting triage.

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[mengjiao-liu]

/sig testing

[aojea]

/ok-to-test
Thanks, since you are doing it , can you also move it to subtests , using t.Run ?

[mengjiao-liu]

/ok-to-test Thanks, since you are doing it , can you also move it to subtests , using t.Run ?

Updated. Thanks for suggestion.

[aojea]

/lgtm
/assign @liggitt

for approval

Thanks

[liggitt]

/approve
/retest

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: liggitt, mengjiao-liu

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• pkg/util/netsh/OWNERS [liggitt]

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