Events-MVC (example with htmx)

Events-MVC/Tests/Events.Tests.IntegrationTests/Infrastructure/CustomWebApplicationFactory.cs

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+#if POSTGRES
+using Events.EF.Data.Postgres;
+#else
+using Events.EF.Data.MSSQL;
+#endif
+using Events.EF.Models;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Mvc.Testing;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage;
+using Microsoft.EntityFrameworkCore.Diagnostics;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.DependencyInjection.Extensions;
+
+namespace Events.Tests.IntegrationTests.Infrastructure;
+
+public class CustomWebApplicationFactory : WebApplicationFactory<Program>
+{
+    private readonly Action<EventsContext>? seed;
+    private readonly InMemoryDatabaseRoot databaseRoot = new();
+    private readonly string databaseName = Guid.NewGuid().ToString();
+
+    public CustomWebApplicationFactory(Action<EventsContext>? seed = null)
+    {
+        this.seed = seed;
+    }
+
+    protected override void ConfigureWebHost(IWebHostBuilder builder)
+    {
+        builder.UseEnvironment("Development");
+        builder.ConfigureServices(services =>
+        {
+            services.RemoveAll(typeof(DbContextOptions<EventsContext>));
+            services.RemoveAll(typeof(IDbContextOptionsConfiguration<EventsContext>));
+            services.RemoveAll(typeof(EventsContext));
+
+            services.AddDbContext<EventsContext>(options =>
+                options
+                    .UseInMemoryDatabase(databaseName, databaseRoot)
+                    .ConfigureWarnings(warnings => warnings.Ignore(CoreEventId.ManyServiceProvidersCreatedWarning)));
+
+            var serviceProvider = services.BuildServiceProvider();
+            using var scope = serviceProvider.CreateScope();
+            var ctx = scope.ServiceProvider.GetRequiredService<EventsContext>();
+            ctx.Database.EnsureCreated();
+            seed?.Invoke(ctx);
+            ctx.SaveChanges();
+        });
+    }
+}