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   * 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.beam.it.elasticsearch;
  
  import static com.google.common.truth.Truth.assertThat;
  import static org.junit.Assert.assertThrows;
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.ArgumentMatchers.eq;
  import static org.mockito.Mockito.doReturn;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  import java.io.IOException;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.ImmutableMap;
  import org.elasticsearch.action.admin.indices.delete.DeleteIndexRequest;
  import org.elasticsearch.action.bulk.BulkRequest;
  import org.elasticsearch.client.RequestOptions;
  import org.elasticsearch.client.RestHighLevelClient;
  import org.elasticsearch.client.core.CountRequest;
  import org.elasticsearch.client.indices.CreateIndexRequest;
  import org.elasticsearch.client.indices.GetIndexRequest;
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  import org.mockito.Answers;
  import org.mockito.Mock;
  import org.mockito.junit.MockitoJUnit;
  import org.mockito.junit.MockitoRule;
  import org.testcontainers.elasticsearch.ElasticsearchContainer;
  
  /** Unit tests for {@link ElasticsearchResourceManager}. */
  @RunWith(JUnit4.class)
  public class ElasticsearchResourceManagerTest {
  
    @Rule public final MockitoRule mockito = MockitoJUnit.rule();
  
    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
    private RestHighLevelClient elasticsearchClient;
  
    @Mock private ElasticsearchContainer container;
  
    private static final String TEST_ID = "test-id";
    private static final String INDEX_NAME = "index-name";
    private static final String HOST = "localhost";
    private static final int ELASTICSEARCH_PORT = 9200;
    private static final int MAPPED_PORT = 10000;
  
    private ElasticsearchResourceManager testManager;
  
    @Before
    public void setUp() {
      when(container.getHttpHostAddress()).thenReturn(HOST + ":" + MAPPED_PORT);
      doReturn(container).when(container).withLogConsumer(any());
  
      testManager =
          new ElasticsearchResourceManager(
              elasticsearchClient, container, ElasticsearchResourceManager.builder(TEST_ID));
    }
  
    @Test
    public void testGetUriShouldReturnCorrectValue() {
      when(container.getHost()).thenReturn(HOST);
      when(container.getMappedPort(ELASTICSEARCH_PORT)).thenReturn(MAPPED_PORT);
  
      assertThat(
              new ElasticsearchResourceManager(
                      elasticsearchClient, container, ElasticsearchResourceManager.builder(TEST_ID))
                  .getUri())
          .matches("http://" + HOST + ":" + MAPPED_PORT);
    }
  
    @Test
    public void testCreateIndexShouldThrowErrorWhenCollectionNameIsInvalid() {
      assertThrows(
          ElasticsearchResourceManagerException.class, () -> testManager.createIndex("invalid#name"));
    }
  
    @Test
    public void testCreateCollectionShouldThrowErrorWhenElasticsearchFailsToGetDB()
        throws IOException {
      when(elasticsearchClient
              .indices()
              .exists(any(GetIndexRequest.class), eq(RequestOptions.DEFAULT)))
          .thenThrow(IllegalArgumentException.class);
  
      assertThrows(
          ElasticsearchResourceManagerException.class, () -> testManager.createIndex(INDEX_NAME));
    }
  
    @Test
    public void testCreateCollectionShouldReturnTrueIfElasticsearchDoesNotThrowAnyError()
        throws IOException {
      when(elasticsearchClient
              .indices()
              .exists(any(GetIndexRequest.class), eq(RequestOptions.DEFAULT)))
          .thenReturn(false);
      when(elasticsearchClient
              .indices()
              .create(any(CreateIndexRequest.class), eq(RequestOptions.DEFAULT))
              .isAcknowledged())
          .thenReturn(true);
  
      assertThat(testManager.createIndex(INDEX_NAME)).isEqualTo(true);
      verify(elasticsearchClient.indices())
          .exists(any(GetIndexRequest.class), eq(RequestOptions.DEFAULT));
    }
  
    @Test
    public void testInsertDocumentsShouldInsert() throws IOException {
      assertThat(
              testManager.insertDocuments(
                  INDEX_NAME, ImmutableMap.of("1", ImmutableMap.of("company", "Google LLC"))))
          .isEqualTo(true);
  
      verify(elasticsearchClient).bulk(any(BulkRequest.class), eq(RequestOptions.DEFAULT));
    }
  
    @Test
    public void testCountDocumentsShouldReturnInt() throws IOException {
      when(elasticsearchClient.count(any(CountRequest.class), eq(RequestOptions.DEFAULT)).getCount())
          .thenReturn(100L);
  
      assertThat(testManager.count(INDEX_NAME)).isEqualTo(100L);
    }
  
    @Test
    public void testCleanupShouldDropNonStaticIndex() throws IOException {
      when(elasticsearchClient
              .indices()
              .exists(any(GetIndexRequest.class), eq(RequestOptions.DEFAULT)))
          .thenReturn(false);
      when(elasticsearchClient
              .indices()
              .create(any(CreateIndexRequest.class), eq(RequestOptions.DEFAULT))
              .isAcknowledged())
          .thenReturn(true);
  
      boolean index = testManager.createIndex("dummy-index");
      assertThat(index).isTrue();
      testManager.cleanupAll();
  
      verify(elasticsearchClient.indices())
          .delete(any(DeleteIndexRequest.class), eq(RequestOptions.DEFAULT));
    }
  
    @Test
    public void testCleanupAllShouldDropStaticIndex() throws IOException {
      ElasticsearchResourceManager.Builder builder = ElasticsearchResourceManager.builder(TEST_ID);
      builder.setHost("localhost").setPort(9200).useStaticContainer();
  
      ElasticsearchResourceManager tm =
          new ElasticsearchResourceManager(elasticsearchClient, container, builder);
  
      when(elasticsearchClient
              .indices()
              .exists(any(GetIndexRequest.class), eq(RequestOptions.DEFAULT)))
          .thenReturn(false);
      when(elasticsearchClient
              .indices()
              .create(any(CreateIndexRequest.class), eq(RequestOptions.DEFAULT))
              .isAcknowledged())
          .thenReturn(true);
  
      boolean index = tm.createIndex("dummy-index");
      assertThat(index).isTrue();
      tm.cleanupAll();
  
      verify(elasticsearchClient.indices())
          .delete(any(DeleteIndexRequest.class), eq(RequestOptions.DEFAULT));
    }
  }
  