Add tests for Cache RemoveOldest, Len and Clear

[magic-peach]

What type of PR is this?
/kind test

What this PR does / why we need it:

Cache.RemoveOldest, Cache.Len, and Cache.Clear had zero test coverage. Adds direct tests for each, including RemoveOldest and Clear on an empty cache.

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:

Verified with go test ./lru/...: all 10 tests pass, including the pre-existing race and eviction tests.

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:

What type of PR is this?
/kind test

What this PR does / why we need it:

Cache.RemoveOldest, Cache.Len, and Cache.Clear had zero test coverage. Adds direct tests for each, including RemoveOldest and Clear on an empty cache.

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:

Verified with go test ./lru/...: all 10 tests pass, including the pre-existing race and eviction tests.

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
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Details

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• OWNERS

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[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.