feature: Add tenant update endpoint

src/main/java/dev/sultanov/keycloak/multitenancy/model/TenantModel.java

@@ -14,6 +14,8 @@ public interface TenantModel {
 
     String getName();
 
+    void setName(String name);
+
     RealmModel getRealm();
 
     /* Membership */

src/main/java/dev/sultanov/keycloak/multitenancy/model/jpa/TenantAdapter.java

@@ -44,6 +44,11 @@ public String getName() {
         return tenant.getName();
     }
 
+    @Override
+    public void setName(String name) {
+        tenant.setName(name);
+    }
+
     @Override
     public RealmModel getRealm() {
         return session.realms().getRealm(tenant.getRealmId());

src/main/java/dev/sultanov/keycloak/multitenancy/resource/TenantResource.java

@@ -2,14 +2,16 @@
 
 import dev.sultanov.keycloak.multitenancy.model.TenantModel;
 import dev.sultanov.keycloak.multitenancy.resource.representation.TenantRepresentation;
+import jakarta.ws.rs.Consumes;
 import jakarta.ws.rs.DELETE;
 import jakarta.ws.rs.GET;
+import jakarta.ws.rs.PUT;
 import jakarta.ws.rs.Path;
 import jakarta.ws.rs.Produces;
 import jakarta.ws.rs.core.MediaType;
+import jakarta.ws.rs.core.Response;
 import org.eclipse.microprofile.openapi.annotations.Operation;
 import org.keycloak.events.admin.OperationType;
-import org.keycloak.models.KeycloakSession;
 
 public class TenantResource extends AbstractAdminResource<TenantAdminAuth> {
 
@@ -27,6 +29,22 @@ public TenantRepresentation getTenant() {
         return ModelMapper.toRepresentation(tenant);
     }
 
+    @PUT
+    @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(value = MediaType.APPLICATION_JSON)
+    @Operation(operationId = "updateTenant", summary = "Update tenant")
+    public Response updateTenant(TenantRepresentation request) {
+
+        tenant.setName(request.getName());
+
+        adminEvent.operation(OperationType.UPDATE)
+                .resourcePath(session.getContext().getUri())
+                .representation(ModelMapper.toRepresentation(tenant))
+                .success();
+
+        return Response.noContent().build();
+    }
+
     @DELETE
     @Operation(operationId = "deleteTenant", summary = "Delete tenant")
     public void deleteTenant() {

src/test/java/dev/sultanov/keycloak/multitenancy/ApiIntegrationTest.java

@@ -4,6 +4,7 @@
 
 import dev.sultanov.keycloak.multitenancy.resource.representation.TenantInvitationRepresentation;
 import dev.sultanov.keycloak.multitenancy.resource.representation.TenantMembershipRepresentation;
+import dev.sultanov.keycloak.multitenancy.resource.representation.TenantRepresentation;
 import dev.sultanov.keycloak.multitenancy.support.BaseIntegrationTest;
 import dev.sultanov.keycloak.multitenancy.support.actor.KeycloakAdminCli;
 import dev.sultanov.keycloak.multitenancy.support.browser.AccountPage;
@@ -24,7 +25,7 @@ void setUp() {
     }
 
     @Test
-    void admin_shouldBeAbleToRevokeMembership_whenUserAcceptsInvitation() {
+    void adminRevokesMembership_shouldSucceed_whenUserHasAcceptedInvitation() {
         // given
         var adminUser = keycloakAdminClient.createVerifiedUser();
         var tenantResource = adminUser.createTenant();
@@ -61,4 +62,39 @@ void admin_shouldBeAbleToRevokeMembership_whenUserAcceptsInvitation() {
                     .containsExactly(adminUser.getUserData().getEmail().toLowerCase());
         }
     }
+
+    @Test
+    void adminUpdatesTenant_shouldReturnNoContent_whenTenantIsSuccessfullyUpdated() {
+        // given
+        var adminUser = keycloakAdminClient.createVerifiedUser();
+        var tenantResource = adminUser.createTenant();
+        var newName = "new-name";
+
+        // when
+        var request = new TenantRepresentation();
+        request.setName(newName);
+        try (var response = tenantResource.updateTenant(request)) {
+
+            // then
+            assertThat(response.getStatus()).isEqualTo(HttpStatus.SC_NO_CONTENT);
+            assertThat(tenantResource.toRepresentation().getName()).isEqualTo(newName);
+        }
+    }
+
+    @Test
+    void adminUpdatesTenant_shouldReturnConflict_whenUpdatedTenantNameAlreadyExists() {
+        // given
+        var adminUser = keycloakAdminClient.createVerifiedUser();
+        var tenantResource = adminUser.createTenant();
+        var existingTenantName = keycloakAdminClient.createVerifiedUser().createTenant().toRepresentation().getName();
+
+        // when
+        var request = new TenantRepresentation();
+        request.setName(existingTenantName);
+        try (var response = tenantResource.updateTenant(request)) {
+
+            // then
+            assertThat(response.getStatus()).isEqualTo(HttpStatus.SC_CONFLICT);
+        }
+    }
 }

src/test/java/dev/sultanov/keycloak/multitenancy/support/api/TenantResource.java

@@ -1,19 +1,27 @@
 package dev.sultanov.keycloak.multitenancy.support.api;
 
 import dev.sultanov.keycloak.multitenancy.resource.representation.TenantRepresentation;
+import jakarta.ws.rs.Consumes;
 import jakarta.ws.rs.DELETE;
 import jakarta.ws.rs.GET;
+import jakarta.ws.rs.PUT;
 import jakarta.ws.rs.Path;
 import jakarta.ws.rs.Produces;
 import jakarta.ws.rs.core.MediaType;
 import jakarta.ws.rs.core.Response;
+import org.eclipse.microprofile.openapi.annotations.Operation;
 
 public interface TenantResource {
 
     @GET
     @Produces(MediaType.APPLICATION_JSON)
     TenantRepresentation toRepresentation();
 
+    @PUT
+    @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(value = MediaType.APPLICATION_JSON)
+    Response updateTenant(TenantRepresentation request);
+
     @DELETE
     @Produces(MediaType.APPLICATION_JSON)
     Response deleteTenant();