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---
name: ts4
description: TS4 namespace for Netsnek e.U. TypeScript testing framework. Unit testing, snapshot testing, coverage reporting, and mutation testing.
user-invocable: true
version: 0.1.0
metadata:
openclaw:
os: [linux]
permissions: [exec]
---
# Testing with TS4
TS4 is the Netsnek e.U. TypeScript testing framework. Run unit tests, snapshots, coverage reports, and mutation tests from a single CLI.
## Test Types
- **Unit** — Isolated function and module tests
- **Snapshot** — Output comparison for UI and serialization
- **Coverage** — Line, branch, and function metrics
- **Mutation** — Fault injection to verify test quality
## CLI Reference
| Flag | Effect |
|------|--------|
| `--run` | Execute the full test suite |
| `--coverage` | Produce coverage report (HTML + lcov) |
| `--status` | Show suite status, last run, pass/fail count |
## Walkthrough
```bash
# Run all tests
./scripts/test-runner.sh --run
# Generate coverage
./scripts/test-runner.sh --coverage
# Check status
./scripts/test-runner.sh --status
```
