Added tests to validate IStartupFilter is registered correctly (#358)

Author: ivaylokenov

test/MyTested.AspNetCore.Mvc.Abstractions.Test/ServicesTests.cs

@@ -28,6 +28,7 @@
     using Setups.Common;
     using Setups.Controllers;
     using Setups.Services;
+    using Setups.StartupFilters;
     using Setups.Startups;
     using Xunit;
 
@@ -714,10 +715,11 @@ public void ConfigureContainerWithNoServerServicesShouldThrowCorrectExceptionMes
         [Fact]
         public void RegisteringServerServicesTwiceShouldResolveThemCorrectly()
         {
-            MyApplication.IsRunningOn(server => server
-                .WithServices(services => services
-                    .AddTransient<IInjectedService, InjectedService>())
-                .WithStartup<DefaultStartup>());
+            MyApplication
+                .IsRunningOn(server => server
+                    .WithServices(services => services
+                        .AddTransient<IInjectedService, InjectedService>())
+                    .WithStartup<DefaultStartup>());
 
             var injectedService = TestServiceProvider.GetService<IInjectedService>();
 
@@ -840,5 +842,21 @@ public void EndpointRoutesShouldRegisterCorrectValues()
 
             MyApplication.StartsFrom<DefaultStartup>();
         }
+
+        [Fact]
+        public void StartupFiltersShouldBeRegisteredAndConsidered()
+        {
+            MyApplication
+                .StartsFrom<DefaultStartup>()
+                .WithServices(services => services
+                    .AddSingleton<IStartupFilter>(new CustomStartupFilter()));
+
+            var sameStartupFilter = TestServiceProvider.GetService<IStartupFilter>() as CustomStartupFilter;
+
+            Assert.NotNull(sameStartupFilter);
+            Assert.True(sameStartupFilter.ConfigurationRegistered);
+
+            MyApplication.StartsFrom<DefaultStartup>();
+        }
     }
 }

test/MyTested.AspNetCore.Mvc.Test.Setups/Http/CustomHttpFeature.cs

@@ -0,0 +1,7 @@
+namespace MyTested.AspNetCore.Mvc.Test.Setups.Http
+{
+    public class CustomHttpFeature
+    {
+
+    }
+}

test/MyTested.AspNetCore.Mvc.Test.Setups/StartupFilters/CustomStartupFilter.cs

@@ -0,0 +1,27 @@
+namespace MyTested.AspNetCore.Mvc.Test.Setups.StartupFilters
+{
+    using System;
+    using Http;
+    using Microsoft.AspNetCore.Builder;
+    using Microsoft.AspNetCore.Hosting;
+
+    public class CustomStartupFilter : IStartupFilter
+    {
+        public bool ConfigurationRegistered { get; private set; }
+
+        public Action<IApplicationBuilder> Configure(Action<IApplicationBuilder> next)
+            => app =>
+            {
+                this.ConfigurationRegistered = true;
+
+                app.Use(async (context, nextMiddleware) =>
+                {
+                    context.Features.Set(new CustomHttpFeature());
+
+                    await nextMiddleware();
+                });
+
+                next(app);
+            };
+    }
+}