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.processor.internals;
  
  import org.apache.kafka.common.header.Headers;
  import org.apache.kafka.common.header.internals.RecordHeaders;
  
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  public class ProcessorRecordContextTest {
      // timestamp + offset + partition: 8 + 8 + 4
      private static final long MIN_SIZE = 20L;
  
      @Test
      public void shouldNotAllowNullHeaders() {
          assertThrows(
              NullPointerException.class,
              () -> new ProcessorRecordContext(
                  42L,
                  73L,
                  0,
                  "topic",
                  null
              )
          );
      }
  
      @Test
      public void shouldEstimateNullTopicAndEmptyHeadersAsZeroLength() {
          final ProcessorRecordContext context = new ProcessorRecordContext(
              42L,
              73L,
              0,
              null,
              new RecordHeaders()
          );
  
          assertEquals(MIN_SIZE, context.residentMemorySizeEstimate());
      }
  
      @Test
      public void shouldEstimateEmptyHeaderAsZeroLength() {
          final ProcessorRecordContext context = new ProcessorRecordContext(
              42L,
              73L,
              0,
              null,
              new RecordHeaders()
          );
  
          assertEquals(MIN_SIZE, context.residentMemorySizeEstimate());
      }
  
      @Test
      public void shouldEstimateTopicLength() {
          final ProcessorRecordContext context = new ProcessorRecordContext(
              42L,
              73L,
              0,
              "topic",
              new RecordHeaders()
          );
  
          assertEquals(MIN_SIZE + 5L, context.residentMemorySizeEstimate());
      }
  
      @Test
      public void shouldEstimateHeadersLength() {
          final Headers headers = new RecordHeaders();
          headers.add("header-key", "header-value".getBytes());
          final ProcessorRecordContext context = new ProcessorRecordContext(
              42L,
              73L,
              0,
              null,
              headers
          );
  
          assertEquals(MIN_SIZE + 10L + 12L, context.residentMemorySizeEstimate());
      }
  
      @Test
      public void shouldEstimateNullValueInHeaderAsZero() {
          final Headers headers = new RecordHeaders();
          headers.add("header-key", null);
          final ProcessorRecordContext context = new ProcessorRecordContext(
              42L,
              73L,
              0,
              null,
              headers
          );
  
          assertEquals(MIN_SIZE + 10L, context.residentMemorySizeEstimate());
      }
  }
  