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MosisService/docs/TESTING-FRAMEWORK.md

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# Automated Testing Framework
The designer-test (`designer-test/`) provides automated UI testing.
## Test Architecture
1. **WindowController**: Finds designer window, sends mouse/keyboard events via Windows SendInput API
2. **HierarchyReader**: Parses UI hierarchy JSON to find elements by ID/class (with retry logic and exponential backoff)
3. **LogParser**: Monitors log file for navigation events
4. **TestRunner**: Orchestrates test execution, reports results
5. **UIInspector**: Dumps UI hierarchy with atomic writes (temp file + rename pattern)
## Key Implementation Details
- **Path Normalization**: RmlUi uses `|` instead of `:` in Windows paths (e.g., `D|\Dev\...`). The UIInspector normalizes paths for correct document matching.
- **Atomic File Writes**: Hierarchy files are written to `.tmp` then renamed to prevent partial reads.
- **Retry with Backoff**: HierarchyReader retries up to 10 times with exponential backoff (30ms base) and validates JSON completeness.
- **Dynamic Back Button**: `GoHome()` finds back buttons from hierarchy by class (`app-bar-nav` or `browser-nav-btn`) instead of fixed coordinates.
## Writing Tests
```cpp
// Find element by ID and click it
bool ClickById(TestContext& ctx, const std::string& id) {
ctx.hierarchy.Reload();
auto element = ctx.hierarchy.FindById(id);
if (!element) return false;
int x = element->bounds.centerX();
int y = element->bounds.centerY();
ScaleToPhysical(ctx, x, y); // Convert logical to physical coords
ctx.window.SendClick(x, y);
return true;
}
// Test example
bool TestNavigateToDialer(TestContext& ctx) {
GoHome(ctx);
ctx.log.Clear();
if (!ClickById(ctx, "dock-phone")) return false;
std::this_thread::sleep_for(std::chrono::milliseconds(1000));
ctx.log.Reload();
return ctx.log.Contains("Loaded screen: apps/dialer/dialer.rml");
}
```
## Test Output
Tests produce JSON results at `test_results.json`:
```json
{
"name": "Mosis Designer UI Tests",
"summary": {"passed": 5, "failed": 0, "total": 5},
"tests": [
{"name": "Navigate to Dialer", "status": "passed", "duration_ms": 3500}
]
}
```