add a sample for integration test

src/BuildingBlocks/Domain/BusPublisher.cs

@@ -42,19 +42,7 @@ public sealed class BusPublisher : IBusPublisher
 
         if (!integrationEvents.Any()) return;
 
-        foreach (var integrationEvent in integrationEvents)
+        await PublishMessageToBroker(integrationEvents, cancellationToken);
-        {
-            await _publishEndpoint.Publish((object)integrationEvent, context =>
-            {
-                context.CorrelationId = new Guid(_httpContextAccessor.HttpContext.GetCorrelationId());
-                context.Headers.Set("UserId",
-                    _httpContextAccessor?.HttpContext?.User?.FindFirstValue(ClaimTypes.NameIdentifier));
-                context.Headers.Set("UserName",
-                    _httpContextAccessor?.HttpContext?.User?.FindFirstValue(ClaimTypes.Name));
-            }, cancellationToken);
-
-            _logger.LogTrace("Publish a message with ID: {Id}", integrationEvent?.EventId);
-        }
 
         _logger.LogTrace("Processing integration events done...");
     }
@@ -70,11 +58,18 @@ public sealed class BusPublisher : IBusPublisher
 
         _logger.LogTrace("Processing integration events start...");
 
+        await PublishMessageToBroker(integrationEvents, cancellationToken);
+
+        _logger.LogTrace("Processing integration events done...");
+    }
+
+    private async Task PublishMessageToBroker(IReadOnlyList<IIntegrationEvent> integrationEvents, CancellationToken cancellationToken)
+    {
         foreach (var integrationEvent in integrationEvents)
         {
-            await _publishEndpoint.Publish((object)integrationEvent, context =>
+            await _publishEndpoint.Publish((object) integrationEvent, context =>
             {
-                context.CorrelationId = new Guid(_httpContextAccessor.HttpContext.GetCorrelationId());
+                context.CorrelationId = _httpContextAccessor?.HttpContext?.GetCorrelationId();
                 context.Headers.Set("UserId",
                     _httpContextAccessor?.HttpContext?.User?.FindFirstValue(ClaimTypes.NameIdentifier));
                 context.Headers.Set("UserName",
@@ -83,8 +78,6 @@ public sealed class BusPublisher : IBusPublisher
 
             _logger.LogTrace("Publish a message with ID: {Id}", integrationEvent?.EventId);
         }
-
-        _logger.LogTrace("Processing integration events done...");
     }
 
     private Task<IReadOnlyList<IIntegrationEvent>> MapDomainEventToIntegrationEventAsync(

src/BuildingBlocks/Web/CorrelationExtensions.cs

@@ -19,8 +19,9 @@ public static class CorrelationExtensions
         });
     }
 
-    public static string GetCorrelationId(this HttpContext context)
+    public static Guid GetCorrelationId(this HttpContext context)
     {
-        return context.Items.TryGetValue(CorrelationId, out var correlationId) ? correlationId as string : null;
+        context.Items.TryGetValue(CorrelationId, out var correlationId);
+        return string.IsNullOrEmpty(correlationId?.ToString()) ? Guid.NewGuid() : new Guid(correlationId.ToString()!);
     }
 }

src/Services/Flight/tests/DeleteTests.cs

@@ -1,27 +0,0 @@
-using System.Threading.Tasks;
-using BuildingBlocks.Contracts.EventBus.Messages;
-using Flight.Airports.Models;
-using Flight.Flights.Features.GetFlightById;
-using MassTransit.Testing;
-using Xunit;
-
-namespace Integration.Test;
-
-[Collection(nameof(TestFixture))]
-public class DeleteTests
-{
-    private readonly TestFixture _fixture;
-
-    public DeleteTests(TestFixture fixture)
-    {
-        _fixture = fixture;
-    }
-
-    [Fact]
-    public async Task Should_get_flight()
-    {
-        var query = new GetFlightByIdQuery(1);
-        var flight = await _fixture.SendAsync(query);
-        var airport = await _fixture.FindAsync<Airport>(1);
-    }
-}

src/Services/Flight/tests/Fakes/FakeCreateFlightCommand.cs

@@ -0,0 +1,14 @@
+using AutoBogus;
+using Flight.Flights.Features.CreateFlight;
+
+namespace Integration.Test.Fakes;
+
+public sealed class FakeCreateFlightCommand : AutoFaker<CreateFlightCommand>
+{
+    public FakeCreateFlightCommand()
+    {
+        RuleFor(r => r.DepartureAirportId, _ => 1);
+        RuleFor(r => r.ArriveAirportId, _ => 2);
+        RuleFor(r => r.AircraftId, _ => 1);
+    }
+}

src/Services/Flight/tests/Flight/CreateFlightTest.cs

@@ -0,0 +1,36 @@
+using System.Threading.Tasks;
+using Flight.Flights.Features.CreateFlight;
+using FluentAssertions;
+using Integration.Test.Fakes;
+using Xunit;
+
+namespace Integration.Test.Flight;
+
+[Collection(nameof(TestFixture))]
+public class CreateFlightTest
+{
+    private readonly TestFixture _fixture;
+
+    public CreateFlightTest(TestFixture fixture)
+    {
+        _fixture = fixture;
+    }
+
+    [Fact]
+    public async Task should_create_new_flight_to_db()
+    {
+        // Arrange
+        var fakeFlight = new FakeCreateFlightCommand().Generate();
+        var command = new CreateFlightCommand(fakeFlight.FlightNumber, fakeFlight.AircraftId,
+            fakeFlight.DepartureAirportId, fakeFlight.DepartureDate,
+            fakeFlight.ArriveDate, fakeFlight.ArriveAirportId, fakeFlight.DurationMinutes, fakeFlight.FlightDate,
+            fakeFlight.Status, fakeFlight.Price);
+
+        // Act
+        var flightResponse = await _fixture.SendAsync(command);
+
+        // Assert
+        flightResponse.Should().NotBeNull();
+        flightResponse?.FlightNumber.Should().Be(command.FlightNumber);
+    }
+}