# NLProxy Test Suite Reference

This document describes the repository test harness in `tests.py`.

## Purpose

The single `tests.py` module contains the repository's automated test definitions, fixtures, and pytest integration hooks.

## Testing Coverage

The file includes test classes for:

- `TestPromptShield`
- `TestSemanticSegmenter`
- `TestSemanticCompressor`
- `TestPromptReconstructor`
- `TestSafetyChecker`
- `TestResponseCorrector`
- `TestPostLLMVerifier`
- `TestPromptFirewall`
- `TestSemanticLLMCache`
- `TestCompressionServiceIntegration`
- `TestProxyEndpointIntegration`
- `TestPerformance`
- `TestRegression`

## Helper Functions

- `test_config()`
- `sample_prompts()`
- `mock_embedding()`
- `mock_embeddings(sample_prompts)`
- `mock_nli_response()`
- `mock_llm_response()`
- `mock_redis_client()`
- `mock_http_client()`
- `mock_tokenizer()`

These helpers provide deterministic test fixtures for core logic, caching, and provider simulation.

## CLI & Test Runner Integration

The file also defines pytest plugin hooks:

- `pytest_configure(config)`
- `pytest_collection_modifyitems(config, items)`
- `pytest_report_header(terminalreporter, exitstatus, config)`
- `pytest_terminal_summary(terminalreporter, exitstatus, config)`

## Usage

The test harness is designed for use with `pytest` and can be invoked through the CLI wrapper in `cli/tests.py`.

### Recommended Commands

- `python -m nlproxy.cli.tests`
- `pytest tests.py`

## Notes

- The module is structured to support both unit and integration tests in a single file.
- Test classes may depend on fixtures defined in helper functions rather than external frameworks.
- The file is the authoritative reference for existing coverage and validation flows.