Fix case-insensitive word matcher missing dynamic (rendered) values

[Synvoya]

Description

A word matcher with case-insensitive: true fails to match when a template word (e.g. {{host}}, or a value chained from a prior extractor) resolves to a value containing uppercase letters.

MatchWords lowercases the corpus, and compile lowercases the literal words, but the rendered dynamic word is never lowercased. So strings.Contains(lowercasedCorpus, "Example.COM") never matches — a missed detection / false negative for any case-insensitive word matcher backed by a dynamic value (extractor output, response headers like Server:/Set-Cookie:, tokens, etc.).

Fix

Lowercase the rendered word when CaseInsensitive is set. The literal-word path is unchanged (already folded to lowercase at compile time).

} else {
    word = result.Text
    if matcher.CaseInsensitive {
        word = strings.ToLower(word)
    }
}

Test

Added TestMatchWords_CaseInsensitive_DynamicValue in pkg/operators/matchers/match_test.go. go test ./pkg/operators/matchers/ passes (new test + existing).

Summary by CodeRabbit

• Bug Fixes

  • Improved case-insensitive word matching so dynamic values are compared using consistent lowercase text, making matches more reliable.
  • Fixed an issue where matched values could retain mixed casing; results are now normalized when case-insensitive matching is enabled.

• Tests

  • Added coverage for case-insensitive matching with dynamic values to verify both successful matching and lowercase normalization.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: a8983f8d-669f-4e2f-b138-70cf3ce52cde

📥 Commits

Reviewing files that changed from the base of the PR and between e4a83ad and c933be6.

📒 Files selected for processing (2)

• pkg/operators/matchers/match.go
• pkg/operators/matchers/match_test.go

---

Walkthrough

Modified MatchWords in the matchers package to lowercase the rendered word value when CaseInsensitive is enabled before performing the containment check against the corpus. Added a corresponding test verifying case-insensitive matching with a dynamic placeholder value.

Changes

Case-Insensitive Word Matching Fix

Layer / File(s)	Summary
Lowercase rendered word on case-insensitive match pkg/operators/matchers/match.go	Rendered word is lowercased before strings.Contains check when CaseInsensitive is true.
Test for dynamic value case-insensitivity pkg/operators/matchers/match_test.go	New test validates that a {{host}} placeholder matches mixed-case corpus and returns a lowercased matched word.

Estimated code review effort: 1 (Trivial) | ~3 minutes

Poem

A word once rendered, mixed in case,
Now smooths to lowercase, finds its place,
"Example.COM" no longer strays,
Matched clean in lowercase ways,
Hop, hop, tests pass — a rabbit's grace! 🐇

🚥 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 summarizes the main fix: case-insensitive word matching now handles rendered dynamic values.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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