diff --git a/AsbCloudWebApi.Tests/ServicesTests/EventServiceTest.cs b/AsbCloudWebApi.Tests/ServicesTests/EventServiceTest.cs
new file mode 100644
index 00000000..e6aef6ed
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+++ b/AsbCloudWebApi.Tests/ServicesTests/EventServiceTest.cs
@@ -0,0 +1,47 @@
+using AsbCloudApp.Data;
+using AsbCloudDb.Model;
+using AsbCloudInfrastructure.Services.Cache;
+using AsbCloudInfrastructure.Services;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using AsbCloudApp.Services;
+using AsbCloudInfrastructure.Services;
+using Moq;
+using Xunit;
+
+namespace AsbCloudWebApi.Tests.ServicesTests;
+
+public class EventServiceTest
+{
+    private readonly AsbCloudDbContext context;
+    private readonly CacheDb cacheDb;
+    private readonly Mock<ITelemetryService> telemetryService;
+
+    public EventServiceTest()
+    {
+        context = TestHelpter.MakeTestContext();
+        cacheDb = new CacheDb();
+        telemetryService = new Mock<ITelemetryService>();
+        telemetryService.Setup(s => s.GetOrCreateTelemetryIdByUid(It.IsAny<string>()))
+            .Returns(1);
+        context.TelemetryEvents.RemoveRange(context.TelemetryEvents); 
+        context.SaveChanges();
+    }
+
+    [Fact]
+    public async Task It_should_save_two_telemetry_events()
+    {
+        var service = new EventService(context, cacheDb, telemetryService.Object);
+
+        var dtos = new List<EventDto>
+        {
+            new EventDto {Id = 1, IdCategory = 1, Message = "Test message 1"},
+            new EventDto {Id = 2, IdCategory = 1, Message = "Test message 2"}
+        };
+
+        await service.UpsertAsync("uid", dtos);
+        
+        Assert.Equal(2, context.TelemetryEvents.Count());
+    }
+}
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