# StellaOps.TestKit

Testing infrastructure for StellaOps - deterministic helpers, fixtures, and assertions.

## Quick Start

### Deterministic Time
```csharp
using var time = new DeterministicTime(new DateTime(2026, 1, 15, 10, 30, 0, DateTimeKind.Utc));
var timestamp = time.UtcNow; // Always 2026-01-15T10:30:00Z
```

### Snapshot Testing
```csharp
SnapshotAssert.MatchesSnapshot(sbom, "TestSbom");
// Update: UPDATE_SNAPSHOTS=1 dotnet test
```

### PostgreSQL Integration
```csharp
public class Tests : IClassFixture<PostgresFixture>
{
    [Fact]
    public async Task TestDb() { /* use _fixture.ConnectionString */ }
}
```

See full documentation in this README.