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.internals;
  
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  public class NamedInternalTest {
  
      private static final String TEST_PREFIX = "prefix-";
      private static final String TEST_VALUE = "default-value";
      private static final String TEST_SUFFIX = "-suffix";
  
      private static class TestNameProvider implements InternalNameProvider {
          int index = 0;
  
          @Override
          public String newProcessorName(final String prefix) {
              return prefix + "PROCESSOR-" + index++;
          }
  
          @Override
          public String newStoreName(final String prefix) {
              return prefix + "STORE-"  + index++;
          }
  
      }
  
      @Test
      public void shouldSuffixNameOrReturnProviderValue() {
          final String name = "foo";
          final TestNameProvider provider = new TestNameProvider();
  
          assertEquals(
              name + TEST_SUFFIX,
              NamedInternal.with(name).suffixWithOrElseGet(TEST_SUFFIX, provider, TEST_PREFIX)
          );
  
          // 1, not 0, indicates that the named call still burned an index number.
          assertEquals(
              "prefix-PROCESSOR-1",
              NamedInternal.with(null).suffixWithOrElseGet(TEST_SUFFIX, provider, TEST_PREFIX)
          );
      }
  
      @Test
      public void shouldGenerateWithPrefixGivenEmptyName() {
          final String prefix = "KSTREAM-MAP-";
          assertEquals(prefix + "PROCESSOR-0", NamedInternal.with(null).orElseGenerateWithPrefix(
              new TestNameProvider(),
              prefix)
          );
      }
  
      @Test
      public void shouldNotGenerateWithPrefixGivenValidName() {
          final String validName = "validName";
          assertEquals(validName, NamedInternal.with(validName).orElseGenerateWithPrefix(new TestNameProvider(), "KSTREAM-MAP-")
          );
      }
  }