test: repeat the backtracking test input 1024 times, not 8

[mrueg]

What this PR does / why we need it:

TestCatastrophicBacktrackTimeout builds its input like this:

var exp = "Lorem ipsum dolor sit amet, consectetur adipiscing elit"
exp = strings.Repeat(exp, 2^10)

In Go ^ is bitwise XOR, not exponentiation, so 2^10 evaluates to 8. The input is 432 bytes rather than the ~55 KB the expression was clearly meant to produce.

The test passes either way — that regex backtracks catastrophically on both inputs, and the assertion is on the match timeout firing, not on the input size — so this only corrects the intent.

Verified with the longer input: the test still aborts on the timeout, at 60.15s against its 60s + 500ms bound. go vet and gofmt are clean.

How does this change affect the cardinality of KSM: does not change cardinality

Which issue(s) this PR fixes:
N/A

🤖 Generated with Claude Code

Summary by CodeRabbit

• Tests
  • Corrected a stress-test input to reliably exercise repeated-pattern handling.
  • Improved test validity by generating the intended 1,024 repetitions.

[kubernetes-prow]

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This pull-request has been approved by: mrueg

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Reviewing files that changed from the base of the PR and between 9295108 and 4c0aec3.

📒 Files selected for processing (1)

• pkg/allowdenylist/allowdenylist_test.go

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📝 Walkthrough

Walkthrough

The catastrophic backtracking test now repeats its sample string 1,024 times by using decimal 1024 instead of the invalid 2^10 expression.

Changes

Allow/deny list test correction

Layer / File(s)	Summary
Fix test input repetition count pkg/allowdenylist/allowdenylist_test.go	The test uses 1024 to create the intended 1,024-fold repeated input.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to 4c0ae

This changes only the test input size and does not affect production behavior or KSM cardinality; no actionable merge-blocking risk remains after normal checks and review.

Suggested reviewers: dgrisonnet, nmn3m

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main test correction from 8 repetitions to 1,024 repetitions.
Docstring Coverage	✅ Passed	Docstring check was indeterminate for this PR — some files could not be analyzed in time. Not blocking.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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