# Test Suite

Integration tests for the gammaray-mcp bridge, written in Python using `pytest`. Tests communicate with the bridge over stdio JSON-RPC (the same protocol MCP clients use), exercising every tool end-to-end against a real GammaRay probe.

## Prerequisites

- The bridge must be built: `cmake --build bridge/build`
- `pytest` (install via `pip3 install pytest` or `pip install pytest` in a venv)
- For probe-dependent tests: a QML test app at `~/Sources/testqml/relayout.qml` (configurable via `TEST_QML` env)

## Running

```bash
# From the project root:
./tests/run_tests.sh --no-probe    # unit tests only (no probe needed)
./tests/run_tests.sh -v            # full suite, verbose
./tests/run_tests.sh -k "item"     # run only item-related tests
./tests/run_tests.sh --no-probe -x # stop on first failure, no probe
```

Or directly with pytest:

```bash
cd tests
LD_LIBRARY_PATH=../install-prefix/lib \
QT_QPA_PLATFORM=offscreen \
QT_PLUGIN_PATH=../bridge/build/lib/x86_64-linux-gnu/qt6/plugins \
pytest -v
```

## Test files

| File | Tests | Probe required |
|---|---|---|
| `test_connection.py` | `connectProbe`, `probeStatus`, `disconnectProbe`, reconnect | Yes (except `test_tools_listed`, `test_probe_status_disconnected`) |
| `test_navigation.py` | `listQuickWindows`, `selectQuickWindow`, `listQuickItems`, `listScenegraphNodes` | Yes |
| `test_items.py` | `selectQuickItem`, `getItemProperties`, position, visual properties, groups | Yes |
| `test_scenegraph.py` | `selectScenegraphNode`, `getNodeVertices`, `getNodeAdjacency`, `getMaterialShaders`, `getMaterialProperties`, `setRenderMode`, `setSlowMode` | Yes |

## Markers

- `@pytest.mark.probe` — test requires a running GammaRay probe. Automatically skipped with `--no-probe`.

## Fixtures

- `bridge` — fresh `McpClient` instance per test (initialized, not connected)
- `connected_bridge` — bridge connected to a probe (via `connectProbeDefault`)
- `probe_process` — session-scoped, starts a probe via `systemd-run` (fallback: direct spawn) and waits for `ready()`

## Options

| Flag | Default | Description |
|---|---|---|
| `--no-probe` | `false` | Skip all probe-dependent tests |
| `--probe-timeout` | 15s | Seconds to wait for probe to become ready |