content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements. See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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.apache.kafka.streams.kstream;
  
  import org.apache.kafka.streams.errors.TopologyException;
  
  import org.junit.jupiter.api.Test;
  
  import java.util.Arrays;
  
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.fail;
  
  public class NamedTest {
  
      @Test
      public void shouldThrowExceptionGivenNullName() {
          assertThrows(NullPointerException.class, () -> Named.as(null));
      }
  
      @Test
      public void shouldThrowExceptionOnInvalidTopicNames() {
          final char[] longString = new char[250];
          Arrays.fill(longString, 'a');
          final String[] invalidNames = {"", "foo bar", "..", "foo:bar", "foo=bar", ".", new String(longString)};
  
          for (final String name : invalidNames) {
              try {
                  Named.validate(name);
                  fail("No exception was thrown for named with invalid name: " + name);
              } catch (final TopologyException e) {
                  // success
              }
          }
      }
  }