keycloak-aplcache

diff --git a/model/api/src/main/java/org/keycloak/models/utils/RepresentationToModel.java b/model/api/src/main/java/org/keycloak/models/utils/RepresentationToModel.java
index 3b2cfdc..f40f962 100755
--- a/model/api/src/main/java/org/keycloak/models/utils/RepresentationToModel.java
+++ b/model/api/src/main/java/org/keycloak/models/utils/RepresentationToModel.java
@@ -1,5 +1,6 @@
 package org.keycloak.models.utils;
 
+import org.keycloak.Config;
 import org.keycloak.models.ClientTemplateModel;
 import org.keycloak.models.Constants;
 import org.keycloak.common.util.Base64;
@@ -593,9 +594,16 @@ public class RepresentationToModel {
         }
     }
 
+    public static void renameRealm(RealmModel realm, String name) {
+        if (name.equals(realm.getName())) return;
+        ClientModel masterApp = realm.getMasterAdminClient();
+        masterApp.setClientId(KeycloakModelUtils.getMasterRealmAdminApplicationClientId(name));
+        realm.setName(name);
+    }
+
     public static void updateRealm(RealmRepresentation rep, RealmModel realm) {
         if (rep.getRealm() != null) {
-            realm.setName(rep.getRealm());
+            renameRealm(realm, rep.getRealm());
         }
         if (rep.getDisplayName() != null) realm.setDisplayName(rep.getDisplayName());
         if (rep.getDisplayNameHtml() != null) realm.setDisplayNameHtml(rep.getDisplayNameHtml());

diff --git a/testsuite/integration/src/test/java/org/keycloak/testsuite/admin/RealmTest.java b/testsuite/integration/src/test/java/org/keycloak/testsuite/admin/RealmTest.java
old mode 100644
new mode 100755
index b2fb326..4f0936b
--- a/testsuite/integration/src/test/java/org/keycloak/testsuite/admin/RealmTest.java
+++ b/testsuite/integration/src/test/java/org/keycloak/testsuite/admin/RealmTest.java
@@ -101,6 +101,33 @@ public class RealmTest extends AbstractClientTest {
         serverInfoResource.getInfo();
     }
 
+    /**
+     * KEYCLOAK-1990 1991
+     * @throws Exception
+     */
+    @Test
+    public void renameRealmTest() throws Exception {
+        Keycloak keycloak = Keycloak.getInstance("http://localhost:8081/auth", "master", "admin", "admin", Constants.ADMIN_CLI_CLIENT_ID);
+        RealmRepresentation realm1 = new RealmRepresentation();
+        realm1.setRealm("test-immutable");
+        keycloak.realms().create(realm1);
+        realm1 = keycloak.realms().realm("test-immutable").toRepresentation();
+        realm1.setRealm("test-immutable-old");
+        keycloak.realms().realm("test-immutable").update(realm1);
+        realm1 = keycloak.realms().realm("test-immutable-old").toRepresentation();
+
+        RealmRepresentation realm2 = new RealmRepresentation();
+        realm2.setRealm("test-immutable");
+        keycloak.realms().create(realm2);
+        realm2 = keycloak.realms().realm("test-immutable").toRepresentation();
+
+        keycloak.realms().realm("test-immutable-old").remove();
+
+
+
+
+    }
+
     @Test
     public void updateRealm() {
         // first change