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BRIEF: Tests directory index
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# Docs Index: /api/tests

## Purpose

This directory contains PHPUnit test suites and sample fixtures for the
`mokoconsulting/mokostandards` package.

## Contents

| File / Directory | Description |
|---|---|
| `test_circuit_breaker_handling.php` | Tests `CircuitBreakerOpen` and `RateLimitExceeded` exception handling in `ApiClient` |
| `test_enterprise_libraries.php` | Smoke-tests all Enterprise library classes (MetricsCollector, SecurityValidator, TransactionManager, UnifiedValidator, CliFramework) |

## Related Documentation

- [API Overview](../index.md)