add backend tests

OpenAlprWebhookProcessor.Server/Alerts/GetAlerts/GetAlertsRequestHandler.cs

@@ -19,7 +19,7 @@ public async Task<List<Alert>> HandleAsync(CancellationToken cancellationToken)
         {
             var alerts = new List<Alert>();
 
-            foreach (var dbAlert in await _processorContext.Alerts.ToListAsync())
+            foreach (var dbAlert in await _processorContext.Alerts.ToListAsync(cancellationToken))
             {
                 var alert = new Alert()
                 {

Tests/AgentTests.cs

@@ -17,7 +17,7 @@ public async Task AgentRequestSucceeds()
         {
             using (var processorContext = _contextCreator.CreateContext())
             {
-                if (processorContext.Database.EnsureCreated())
+                if (await processorContext.Database.EnsureCreatedAsync())
                 {
                     processorContext.Agents.Add(new OpenAlprWebhookProcessor.Data.Agent()
                     {

Tests/Alerts/GetAlerts/GetAlerts.cs

@@ -0,0 +1,58 @@
+using Microsoft.Data.Sqlite;
+using Microsoft.EntityFrameworkCore;
+using OpenAlprWebhookProcessor.Alerts;
+using OpenAlprWebhookProcessor.Data;
+using System.Data.Common;
+
+namespace Tests.Alerts.GetAlerts
+{
+    public class GetAlertsTests
+    {
+        private ProcessorContext _context;
+        private DbContextOptions<ProcessorContext> _dbContextOptions;
+        private DbConnection _connection;
+
+        [SetUp]
+        public async Task SetupAsync()
+        {
+            _connection = new SqliteConnection("Filename=:memory:");
+            await _connection.OpenAsync();
+
+            _dbContextOptions = new DbContextOptionsBuilder<ProcessorContext>()
+                .UseSqlite(_connection)
+                .Options;
+
+            _context = new ProcessorContext(_dbContextOptions);
+            await _context.Database.EnsureCreatedAsync();
+
+            _context.Alerts.AddRange(
+                new OpenAlprWebhookProcessor.Data.Alert { Id = Guid.NewGuid(), PlateNumber = "ABC123", IsStrictMatch = true, Description = "Stolen vehicle" },
+                new OpenAlprWebhookProcessor.Data.Alert { Id = Guid.NewGuid(), PlateNumber = "XYZ789", IsStrictMatch = false, Description = "Suspicious activity" }
+            );
+            await _context.SaveChangesAsync();
+        }
+
+        [TearDown]
+        public void TearDown()
+        {
+            _context?.Dispose();
+            _connection?.Close();
+            _connection?.Dispose();
+        }
+
+        [Test]
+        public async Task HandleAsync_ReturnsAllAlerts()
+        {
+            // Arrange
+            var handler = new GetAlertsRequestHandler(_context);
+            var cancellationToken = CancellationToken.None;
+
+            // Act
+            var result = await handler.HandleAsync(cancellationToken);
+
+            // Assert
+            Assert.That(result, Is.Not.Null);
+            Assert.That(result, Has.Count.EqualTo(2));
+        }
+    }
+}