Add unit tests for ControllerPublish and ControllerUnpublish requests

[sreis]

Is this a bug fix or adding new feature?

Increases test coverage.

What is this PR about? / Why do we need it?

Increases test coverage.

Closes #199

What testing is done?

Add unit tests for ControllerPublish and ControllerUnpublish requests.

[k8s-ci-robot]

Hi @sreis. Thanks for your PR.

I'm waiting for a kubernetes-sigs or kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[leakingtapan]

/ok-to-test

[leakingtapan]

travis is having issue these days:

{"message":"Couldn't find a repository matching this job.","error":true}
The command "$GOPATH/bin/goveralls -coverprofile=profile.cov -service=travis-ci" exited with 1.

[coveralls]

Pull Request Test Coverage Report for Build 462

• 6 of 6 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+3.4%) to 67.84%

---

Totals
Change from base Build 461:	3.4%
Covered Lines:	983
Relevant Lines:	1449

---

💛 - Coveralls

[leakingtapan]

@sreis could you rebase. thx

[sreis]

@leakingtapan I've rebased PTAL.

[leakingtapan]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: leakingtapan, sreis

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