feat: adding automated tests

test/test.md

@@ -0,0 +1,60 @@
+# Testing nomyo-router
+
+## Setup
+
+Install test dependencies (from the project root):
+
+```bash
+pip install -r test/requirements_test.txt
+```
+
+## Running tests
+
+All commands run from the `test/` directory:
+
+```bash
+cd test
+```
+
+**All non-integration tests** (no backend required):
+```bash
+pytest -m "not integration" -v
+```
+
+**Integration tests only** (requires backend at `192.168.0.51:12434`):
+```bash
+pytest -m integration -v
+```
+
+**Everything:**
+```bash
+pytest -v
+```
+
+## Test structure
+
+| File | What it covers | Backend needed |
+|---|---|---|
+| `test_unit_helpers.py` | Pure helper functions (`_mask_secrets`, `_is_fresh`, `ep2base`, etc.) | No |
+| `test_unit_transforms.py` | Message transform functions (tool calls, image stripping, etc.) | No |
+| `test_unit_context.py` | Context window trimming logic | No |
+| `test_fetch.py` | `fetch.available_models` / `fetch.loaded_models` with mocked HTTP | No |
+| `test_choose_endpoint.py` | `choose_endpoint` routing logic with mocked fetch layer | No |
+| `test_api_validation.py` | HTTP 400/401/403 validation and auth middleware (in-process app) | No |
+| `test_api_integration.py` | Full request/response against a real Ollama/llama-server backend | **Yes** |
+
+## Integration test backend
+
+Integration tests start the router in-process via `startup_event()` and route traffic
+through `httpx.ASGITransport` — no separately running router instance is needed.
+
+They do require a reachable Ollama or llama-server backend. Override the defaults via
+environment variables:
+
+```bash
+export NOMYO_TEST_OLLAMA=http://192.168.0.51:12434
+export NOMYO_TEST_EMBED_MODEL=nomic-embed-text   # optional, auto-discovered otherwise
+export NOMYO_TEST_MODEL_CHAT=llama3.2            # optional, auto-discovered otherwise
+```
+
+If the backend is unreachable, integration tests are automatically skipped.