test Jwt bearer options length (#2464)

Author: westin-m

tests/Microsoft.Identity.Web.Test/WebAppExtensionsTests.cs

@@ -9,6 +9,7 @@
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Authentication;
 using Microsoft.AspNetCore.Authentication.Cookies;
+using Microsoft.AspNetCore.Authentication.JwtBearer;
 using Microsoft.AspNetCore.Authentication.OpenIdConnect;
 using Microsoft.AspNetCore.Components.Server.Circuits;
 using Microsoft.AspNetCore.Http;
@@ -33,6 +34,7 @@
 using NSubstitute;
 using NSubstitute.Extensions;
 using Xunit;
+using TokenValidatedContext = Microsoft.AspNetCore.Authentication.OpenIdConnect.TokenValidatedContext;
 
 namespace Microsoft.Identity.Web.Test
 {
@@ -886,5 +888,17 @@ public void PreventChangesInOpenIdConnectOptionsToBeOverlooked()
             //System.IO.File.WriteAllLines(@"C:\temp\net8.txt", typeof(OpenIdConnectOptions).GetProperties().Select(p => p.Name));
             Assert.Equal(expectedNumberOfProperties, numberOfProperties);
         }
+
+        [Fact]
+        public void PreventChangesInJwtBearerOptionsToBeOverlooked()
+        {
+            int numProps = typeof(JwtBearerOptions).GetProperties(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance).Length;
+#if NET8_0_OR_GREATER
+            int expectedNumberOfProperties = 32;
+#else
+            int expectedNumberOfProperties = 29;
+#endif
+            Assert.Equal(expectedNumberOfProperties, numProps);
+        }
     }
 }