Null keys are not supported on getClientsStream() #41758

cprouveu · 2025-08-08T15:11:03Z

cprouveu
Aug 8, 2025

I'm using tests container from : https://github.com/dasniko/testcontainers-keycloak
since keycloak using quarkus.

There is an update version from 3.7.0 to 3.8.0 for using keycloak version : 26.3.0.
My provider working fine with 26.3.2 but our tests crash. (They all work on 3.7.0)

I asked the tests container creator but he said it's not from his container.
So I ask you some help for understand, fix and continue to have tests for our provider.

With this minimal code I can reproduce the error on realm.getClientsStream() : java.lang.NullPointerException: Null keys are not supported!

Test file :


import dasniko.testcontainers.keycloak.KeycloakContainer;
import io.restassured.response.Response;
import org.junit.jupiter.api.Test;
import org.keycloak.admin.client.Keycloak;
import org.keycloak.representations.AccessTokenResponse;
import org.keycloak.representations.idm.RealmRepresentation;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;

import static io.restassured.RestAssured.given;

public class UserStoriesTestCrash {

    @Test
    public void userStoryCrash() throws Exception {
        try (KeycloakContainer keycloak = new KeycloakContainer()
                .withProviderClassesFrom("target/classes")

        ) {
            keycloak.start();
            System.out.println("keycloak.start()");

            AccessTokenResponse accessTokenResponse = null;

            try {
                accessTokenResponse = initTestEnv(keycloak);
            } catch (Exception e){
                e.printStackTrace();
                System.out.println("Error in initTestEnv : " + e);
            }
            System.out.println(accessTokenResponse);
            keycloak.getDockerClient().stopContainerCmd(keycloak.getContainerId()).exec();

            keycloak.stop();
            System.out.println("keycloak.stop()");
        }
    }

    public static AccessTokenResponse initTestEnv(KeycloakContainer keycloak) throws MalformedURLException {
        Keycloak keycloakClient = keycloak.getKeycloakAdminClient();

        /*
        Get token for others queries
         */
        AccessTokenResponse accessTokenResponse = keycloakClient.tokenManager().getAccessToken();

        /*
        Create Realm
         */
        RealmRepresentation realmRepresentationTestAdmin = new RealmRepresentation();
        Map<String, String> smtpServer = new HashMap<>();

        smtpServer.put("replyToDisplayName", "");
        smtpServer.put("starttls", "true");
        smtpServer.put("auth", "false");
        smtpServer.put("host", "gmail-smtp-in.l.google.com");
        smtpServer.put("replyTo", "");
        smtpServer.put("from", "");
        smtpServer.put("fromDisplayName", "");
        smtpServer.put("envelopeFrom", "");
        smtpServer.put("ssl", "false");
        realmRepresentationTestAdmin.setSmtpServer(smtpServer);

        realmRepresentationTestAdmin.setRealm("admin_realm");
        realmRepresentationTestAdmin.setDisplayName("admin_realm");
        realmRepresentationTestAdmin.setEnabled(true);

        try {
            keycloakClient.realms().create(realmRepresentationTestAdmin);
        } catch (Exception e){
            System.out.println("Error in createRealm : " + e.getMessage());
        }

        /*
        Get Realms Query
         */
        URL url = new URL(keycloak.getAuthServerUrl()); // add url for your provider api

        HashMap body_REQUEST = new HashMap();

        Response req = given()
                .auth().oauth2(accessTokenResponse.getToken())
                .when().body(body_REQUEST).post(url);

        System.out.println(req);

        return accessTokenResponse;
    }
}

Provider file :

    // use it in the provider with : KeycloakSession session
    protected Response processGetErrorContainersVersionQuery() {

        session.realms().getRealmsStream().forEach((RealmModel realm) -> {
            realm.getClientsStream().forEach((element) -> {
                logger.info(element.getClientId());
            });
        });
        try {
            return Response.status(Response.Status.OK).type(MediaType.APPLICATION_JSON).build();
        } catch (Exception e) {
            return Response.status(Response.Status.INTERNAL_SERVER_ERROR).build();
        }
    }

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Null keys are not supported on getClientsStream() #41758

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cprouveu Aug 8, 2025

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cprouveu
Aug 8, 2025