content: /*
   * Copyright 2017-2025 Hyland Software, Inc. and its affiliates.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.activiti.cloud.services.notifications.graphql.subscriptions.datafetcher;
  
  import static org.assertj.core.api.Assertions.assertThat;
  
  import java.util.Arrays;
  import java.util.List;
  import org.junit.jupiter.api.Test;
  
  public class AbstractDestinationResolverTest {
  
      @Test
      public void testCrossJoin() {
          List<String> a = Arrays.asList("*");
          List<String> b = Arrays.asList("a", "b");
          List<String> c = Arrays.asList("c", "d");
          List<String> d = Arrays.asList("e", "f");
          List<String> e = Arrays.asList("*");
  
          List<List<String>> product = AbstractDestinationResolver.crossJoin(Arrays.asList(a, b, c, d, e));
  
          assertThat(product).hasSize(8);
          assertThat(product)
              .containsOnly(
                  Arrays.asList("*", "a", "c", "e", "*"),
                  Arrays.asList("*", "a", "c", "f", "*"),
                  Arrays.asList("*", "a", "d", "e", "*"),
                  Arrays.asList("*", "a", "d", "f", "*"),
                  Arrays.asList("*", "b", "c", "e", "*"),
                  Arrays.asList("*", "b", "d", "f", "*"),
                  Arrays.asList("*", "b", "d", "e", "*"),
                  Arrays.asList("*", "b", "c", "f", "*")
              );
      }
  }
  