Refactor code structure and optimize performance across multiple modules

src/BinaryIndex/__Tests/StellaOps.BinaryIndex.Persistence.Tests/BinaryIndexIntegrationFixture.cs

@@ -0,0 +1,77 @@
+// -----------------------------------------------------------------------------
+// BinaryIndexIntegrationFixture.cs
+// Sprint: SPRINT_20251226_011_BINIDX
+// Task: BINCAT-18 - Integration tests with Testcontainers PostgreSQL
+// -----------------------------------------------------------------------------
+
+using System.Reflection;
+using Dapper;
+using Npgsql;
+using StellaOps.BinaryIndex.Core.Services;
+using StellaOps.Infrastructure.Postgres.Testing;
+
+namespace StellaOps.BinaryIndex.Persistence.Tests;
+
+/// <summary>
+/// PostgreSQL integration test fixture for BinaryIndex module.
+/// Spins up a real PostgreSQL container and runs schema migrations.
+/// </summary>
+public sealed class BinaryIndexIntegrationFixture : PostgresIntegrationFixture
+{
+    private const string TestTenantId = "00000000-0000-0000-0000-000000000001";
+    private NpgsqlDataSource? _dataSource;
+
+    protected override Assembly? GetMigrationAssembly()
+        => typeof(BinaryIndexDbContext).Assembly;
+
+    protected override string GetModuleName() => "BinaryIndex";
+
+    protected override string? GetResourcePrefix() => "StellaOps.BinaryIndex.Persistence.Migrations";
+
+    public override async Task InitializeAsync()
+    {
+        await base.InitializeAsync();
+        _dataSource = NpgsqlDataSource.Create(ConnectionString);
+    }
+
+    public override async Task DisposeAsync()
+    {
+        if (_dataSource != null)
+        {
+            await _dataSource.DisposeAsync();
+        }
+        await base.DisposeAsync();
+    }
+
+    /// <summary>
+    /// Creates a new database context with the test tenant configured.
+    /// </summary>
+    public BinaryIndexDbContext CreateDbContext(string? tenantId = null)
+    {
+        if (_dataSource == null)
+        {
+            throw new InvalidOperationException("Fixture not initialized. Call InitializeAsync first.");
+        }
+
+        var tenant = new TestTenantContext(tenantId ?? TestTenantId);
+        return new BinaryIndexDbContext(_dataSource, tenant);
+    }
+
+    /// <summary>
+    /// Gets the default test tenant ID.
+    /// </summary>
+    public string GetTestTenantId() => TestTenantId;
+}
+
+/// <summary>
+/// Simple tenant context implementation for testing.
+/// </summary>
+internal sealed class TestTenantContext : ITenantContext
+{
+    public TestTenantContext(string tenantId)
+    {
+        TenantId = tenantId;
+    }
+
+    public string TenantId { get; }
+}