diff --git a/modules/identity/src/Volo.Abp.Identity.AspNetCore/Volo/Abp/Identity/AspNetCore/ExternalLoginProviderBase.cs b/modules/identity/src/Volo.Abp.Identity.AspNetCore/Volo/Abp/Identity/AspNetCore/ExternalLoginProviderBase.cs
new file mode 100644
index 0000000000..9871fb788c
--- /dev/null
+++ b/modules/identity/src/Volo.Abp.Identity.AspNetCore/Volo/Abp/Identity/AspNetCore/ExternalLoginProviderBase.cs
@@ -0,0 +1,16 @@
+using System.Threading.Tasks;
+
+namespace Volo.Abp.Identity.AspNetCore
+{
+    public abstract class ExternalLoginProviderBase : IExternalLoginProvider
+    {
+        public abstract Task<bool> TryAuthenticateAsync(string userName, string plainPassword);
+
+        public abstract Task<IdentityUser> CreateUserAsync(string userName);
+
+        public virtual Task UpdateUserAsync(IdentityUser user)
+        {
+            return Task.CompletedTask;
+        }
+    }
+}
diff --git a/modules/identity/test/Volo.Abp.Identity.AspNetCore.Tests/Volo/Abp/Identity/AspNetCore/FakeExternalLoginProvider.cs b/modules/identity/test/Volo.Abp.Identity.AspNetCore.Tests/Volo/Abp/Identity/AspNetCore/FakeExternalLoginProvider.cs
index 8dacdae65e..c95d65143f 100644
--- a/modules/identity/test/Volo.Abp.Identity.AspNetCore.Tests/Volo/Abp/Identity/AspNetCore/FakeExternalLoginProvider.cs
+++ b/modules/identity/test/Volo.Abp.Identity.AspNetCore.Tests/Volo/Abp/Identity/AspNetCore/FakeExternalLoginProvider.cs
@@ -4,18 +4,18 @@ using Volo.Abp.DependencyInjection;
 
 namespace Volo.Abp.Identity.AspNetCore
 {
-    public class FakeExternalLoginProvider : IExternalLoginProvider, ITransientDependency
+    public class FakeExternalLoginProvider : ExternalLoginProviderBase, ITransientDependency
     {
         public const string Name = "Fake";
 
-        public Task<bool> TryAuthenticateAsync(string userName, string plainPassword)
+        public override Task<bool> TryAuthenticateAsync(string userName, string plainPassword)
         {
             return Task.FromResult(
                 userName == "ext_user" && plainPassword == "abc"
             );
         }
 
-        public Task<IdentityUser> CreateUserAsync(string userName)
+        public override Task<IdentityUser> CreateUserAsync(string userName)
         {
             return Task.FromResult(
                 new IdentityUser(
@@ -25,10 +25,5 @@ namespace Volo.Abp.Identity.AspNetCore
                 )
             );
         }
-
-        public Task UpdateUserAsync(IdentityUser user)
-        {
-            return Task.CompletedTask;
-        }
     }
 }