Bring back WebApplicationFactoryWithWebHost (#216)

Author: mauroservienti

src/ServiceComposer.AspNetCore.Testing.Tests/ApiApprovals.Approve_API.verified.txt

@@ -17,4 +17,12 @@
         protected override void ConfigureWebHost(Microsoft.AspNetCore.Hosting.IWebHostBuilder builder) { }
         protected override Microsoft.Extensions.Hosting.IHostBuilder CreateHostBuilder() { }
     }
+    public class WebApplicationFactoryWithWebHost<TStartup> : Microsoft.AspNetCore.Mvc.Testing.WebApplicationFactory<TStartup>
+        where TStartup :  class
+    {
+        public WebApplicationFactoryWithWebHost() { }
+        public System.Action<Microsoft.AspNetCore.Hosting.IWebHostBuilder> BuilderCustomization { get; set; }
+        protected override void ConfigureWebHost(Microsoft.AspNetCore.Hosting.IWebHostBuilder builder) { }
+        protected override Microsoft.Extensions.Hosting.IHostBuilder CreateHostBuilder() { }
+    }
 }

src/ServiceComposer.AspNetCore.Testing/WebApplicationFactoryWithWebHost.cs

@@ -0,0 +1,30 @@
+using System;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Mvc.Testing;
+using Microsoft.Extensions.Hosting;
+
+namespace ServiceComposer.AspNetCore.Testing
+{
+    public class WebApplicationFactoryWithWebHost<TStartup> :
+        WebApplicationFactory<TStartup>
+        where TStartup : class
+    {
+        public Action<IWebHostBuilder> BuilderCustomization { get; set; }
+
+        protected override IHostBuilder CreateHostBuilder()
+        {
+            return Host.CreateDefaultBuilder(Array.Empty<string>())
+                .ConfigureWebHostDefaults(webBuilder =>
+                {
+                    webBuilder.UseStartup<TStartup>();
+                });
+        }
+
+        protected override void ConfigureWebHost(IWebHostBuilder builder)
+        {
+            base.ConfigureWebHost(builder);
+
+            BuilderCustomization?.Invoke(builder);
+        }
+    }
+}