Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

external/aspnetwebstack/test/System.Web.WebPages.Razor.Test/PreApplicationStartCodeTest.cs

@@ -0,0 +1,30 @@
+// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
+
+using System.Reflection;
+using System.Web.Compilation;
+using System.Web.WebPages.TestUtils;
+using Xunit;
+
+namespace System.Web.WebPages.Razor.Test
+{
+    public class PreApplicationStartCodeTest
+    {
+        [Fact]
+        public void StartTest()
+        {
+            AppDomainUtils.RunInSeparateAppDomain(() =>
+            {
+                AppDomainUtils.SetPreAppStartStage();
+                PreApplicationStartCode.Start();
+                var buildProviders = typeof(BuildProvider).GetField("s_dynamicallyRegisteredProviders", BindingFlags.Static | BindingFlags.NonPublic).GetValue(null);
+                Assert.Equal(2, buildProviders.GetType().GetProperty("Count", BindingFlags.Public | BindingFlags.Instance).GetValue(buildProviders, new object[] { }));
+            });
+        }
+
+        [Fact]
+        public void TestPreAppStartClass()
+        {
+            PreAppStartTestHelper.TestPreAppStartClass(typeof(PreApplicationStartCode));
+        }
+    }
+}