Fixed a failing CI test.

Author: renatoc8

FirebaseAdmin/FirebaseAdmin.Tests/Auth/FirebaseUserManagerTest.cs

@@ -123,7 +123,14 @@ public async Task UpdateUser()
         {
             var handler = new MockMessageHandler()
             {
-                Response = new UserRecord("user1"),
+                Response = new GetAccountInfoResponse()
+                {
+                    Kind = "identitytoolkit#GetAccountInfoResponse",
+                    Users = new List<GetAccountInfoResponse.User>()
+                    {
+                        new GetAccountInfoResponse.User() { UserID = "user1" },
+                    },
+                },
             };
             var factory = new MockHttpClientFactory(handler);
             var userManager = new FirebaseUserManager(

FirebaseAdmin/FirebaseAdmin/Auth/FirebaseUserManager.cs

@@ -89,7 +89,13 @@ public async Task<UserRecord> GetUserById(
                 throw new FirebaseException($"Failed to get user: {uid}");
             }
 
-            return new UserRecord(response.Users[0]);
+            var user = response.Users[0];
+            if (user == null || user.UserID != uid)
+            {
+                throw new FirebaseException($"Failed to get user: {uid}");
+            }
+
+            return new UserRecord(user);
         }
 
         /// <summary>
@@ -103,9 +109,15 @@ public async Task UpdateUserAsync(
             UserRecord user, CancellationToken cancellationToken = default(CancellationToken))
         {
             const string updatePath = "accounts:update";
-            var response = await this.PostAndDeserializeAsync<JObject>(
+            var response = await this.PostAndDeserializeAsync<GetAccountInfoResponse>(
                 updatePath, user, cancellationToken).ConfigureAwait(false);
-            if (user.Uid != (string)response["localId"])
+            if (response == null || response.Users == null || response.Users.Count == 0)
+            {
+                throw new FirebaseException($"Failed to get user: {user.Uid}");
+            }
+
+            var updatedUser = response.Users[0];
+            if (updatedUser == null || updatedUser.UserID != user.Uid)
             {
                 throw new FirebaseException($"Failed to update user: {user.Uid}");
             }