# Test Manglings > Validate mangled symbols against expected demangled output Use when this capability is needed. - Skill: `tomevault-io/test-manglings` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/test-manglings` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/test-manglings/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/test-manglings --- # test-manglings Given a mangled Swift symbol: 1. Check if it exists in `Tests/SwiftDemangleTests/Resources/manglings.txt` 2. Run `swift test --filter testManglings` to verify demangling results 3. Report pass/fail with the expected vs actual demangled output If a new symbol pair is provided (mangled ---> demangled), add it to the appropriate resource file and run the test to confirm. --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/oozoofrog) — claim your Tome and manage your conversions.