JUnit Failure Fingerprint

Use this skill to compress noisy JUnit failures/errors into repeatable fingerprints.

What this skill does

• - Scans one or more JUnit XML files
• Extracts only failing/error test cases
• Normalizes volatile tokens (IDs, numbers, line numbers, addresses, UUIDs)
• Generates stable fingerprint hashes for similar root-cause failures
• Emits grouped triage output (text or json)

Inputs

• - JUNIT_GLOB (default: test-results/**/*.xml)
• INLINECODE4 (default: 20)
• INLINECODE6 (text or json, default: text)
• INLINECODE10 (default: 3) — number of normalized stack lines to include in fingerprint seed
• INLINECODE12 (0 or 1, default: 0) — exit non-zero when any failures/errors are found

Run

Text report:

CODEBLOCK0

JSON output for CI annotation/upload:

CODEBLOCK1

Run with bundled fixtures:

CODEBLOCK2

Output contract

• - Exit 0 by default (reporting mode)
• Exit 1 if FAIL_ON_FAILURES=1 and at least one failure/error is found
• In text mode, prints summary + top fingerprints
• In json mode, prints machine-readable groups and per-case detail