Add unit tests for RealClock

[magic-peach]

/kind test

What this PR does / why we need it:

The clock package's RealClock implementation had no direct unit tests, only its fake counterpart in clock/testing was covered. This adds tests for Now, Since, After, Sleep, Tick, NewTimer (including Stop), AfterFunc, and NewTicker.

Test only change, no production code touched.

Which issue(s) this PR fixes:

NONE

Special notes for your reviewer:

Ran the full go test ./... suite across all packages in the module, all pass.

Release note:

NONE

[kubernetes-prow]

@magic-peach: The label(s) kind/test cannot be applied, because the repository doesn't have them.

Details

In response to this:

/kind test

What this PR does / why we need it:

The clock package's RealClock implementation had no direct unit tests, only its fake counterpart in clock/testing was covered. This adds tests for Now, Since, After, Sleep, Tick, NewTimer (including Stop), AfterFunc, and NewTicker.

Test only change, no production code touched.

Which issue(s) this PR fixes:

NONE

Special notes for your reviewer:

Ran the full go test ./... suite across all packages in the module, all pass.

Release note:

NONE

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-sigs/prow repository.

[kubernetes-prow]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: magic-peach
Once this PR has been reviewed and has the lgtm label, please assign thockin for approval. For more information see the Code Review Process.

The full list of commands accepted by this bot can be found here.

Details

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• OWNERS

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[kubernetes-prow]

Welcome @magic-peach!

It looks like this is your first PR to kubernetes/utils 🎉. Please refer to our pull request process documentation to help your PR have a smooth ride to approval.

You will be prompted by a bot to use commands during the review process. Do not be afraid to follow the prompts! It is okay to experiment. Here is the bot commands documentation.

You can also check if kubernetes/utils has its own contribution guidelines.

You may want to refer to our testing guide if you run into trouble with your tests not passing.

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Thank you, and welcome to Kubernetes. 😃

[skitt]

See https://kubernetes.slack.com/archives/C01672LSZL0/p1789992857325439

/close

[kubernetes-prow]

@skitt: Closed this PR.

Details

In response to this:

See https://kubernetes.slack.com/archives/C01672LSZL0/p1789992857325439

/close

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-sigs/prow repository.