Use EphemeralDataProtection for identity tests (#27043)

Author: HaoK

src/Identity/Specification.Tests/src/IdentitySpecificationTestBase.cs

@@ -7,6 +7,7 @@
 using System.Linq.Expressions;
 using System.Security.Claims;
 using System.Threading.Tasks;
+using Microsoft.AspNetCore.DataProtection;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Xunit;
@@ -42,6 +43,7 @@ public abstract class IdentitySpecificationTestBase<TUser, TRole, TKey> : UserMa
         protected override void SetupIdentityServices(IServiceCollection services, object context)
         {
             services.AddHttpContextAccessor();
+            services.AddSingleton<IDataProtectionProvider, EphemeralDataProtectionProvider>();
             services.AddIdentity<TUser, TRole>(options =>
             {
                 options.Password.RequireDigit = false;

src/Identity/Specification.Tests/src/UserManagerSpecificationTests.cs

@@ -9,6 +9,7 @@
 using System.Security.Claims;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Testing;
+using Microsoft.AspNetCore.DataProtection;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Xunit;
@@ -57,6 +58,7 @@ protected virtual IdentityBuilder SetupBuilder(IServiceCollection services, obje
         {
             services.AddHttpContextAccessor();
             services.AddDataProtection();
+            services.AddSingleton<IDataProtectionProvider, EphemeralDataProtectionProvider>();
             var builder = services.AddIdentityCore<TUser>(options =>
             {
                 options.Password.RequireDigit = false;