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.beam.it.mongodb;
  
  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.anyString;
  import static org.mockito.Mockito.doReturn;
  import static org.mockito.Mockito.doThrow;
  import static org.mockito.Mockito.never;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  import com.mongodb.MongoBulkWriteException;
  import com.mongodb.client.MongoClient;
  import com.mongodb.client.MongoCollection;
  import com.mongodb.client.MongoDatabase;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.ImmutableList;
  import org.bson.Document;
  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.containers.MongoDBContainer;
  
  /** Unit tests for {@link MongoDBResourceManager}. */
  @RunWith(JUnit4.class)
  public class MongoDBResourceManagerTest {
  
    @Rule public final MockitoRule mockito = MockitoJUnit.rule();
  
    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
    private MongoClient mongoClient;
  
    @Mock private MongoDBContainer container;
  
    private static final String TEST_ID = "test-id";
    private static final String COLLECTION_NAME = "collection-name";
    private static final String STATIC_DATABASE_NAME = "database";
    private static final String HOST = "localhost";
    private static final int MONGO_DB_PORT = 27017;
    private static final int MAPPED_PORT = 10000;
  
    private MongoDBResourceManager testManager;
  
    @Before
    public void setUp() {
      doReturn(container).when(container).withLogConsumer(any());
      testManager =
          new MongoDBResourceManager(mongoClient, container, MongoDBResourceManager.builder(TEST_ID));
    }
  
    @Test
    public void testCreateResourceManagerBuilderReturnsMongoDBResourceManager() {
      assertThat(
              MongoDBResourceManager.builder(TEST_ID)
                  .useStaticContainer()
                  .setHost(HOST)
                  .setPort(MONGO_DB_PORT)
                  .build())
          .isInstanceOf(MongoDBResourceManager.class);
    }
  
    @Test
    public void testGetUriShouldReturnCorrectValue() {
      when(container.getMappedPort(MONGO_DB_PORT)).thenReturn(MAPPED_PORT);
      assertThat(
              new MongoDBResourceManager(
                      mongoClient, container, MongoDBResourceManager.builder(TEST_ID))
                  .getUri())
          .matches("mongodb://" + HOST + ":" + MAPPED_PORT);
    }
  
    @Test
    public void testGetDatabaseNameShouldReturnCorrectValue() {
      assertThat(
              new MongoDBResourceManager(
                      mongoClient, container, MongoDBResourceManager.builder(TEST_ID))
                  .getDatabaseName())
          .matches(TEST_ID + "-\\d{8}-\\d{6}-\\d{6}");
    }
  
    @Test
    public void testCreateCollectionShouldThrowErrorWhenCollectionNameIsInvalid() {
      assertThrows(
          MongoDBResourceManagerException.class, () -> testManager.createCollection("invalid$name"));
    }
  
    @Test
    public void testCreateCollectionShouldThrowErrorWhenMongoDBFailsToGetDB() {
      doThrow(IllegalArgumentException.class).when(mongoClient).getDatabase(anyString());
  
      assertThrows(
          MongoDBResourceManagerException.class, () -> testManager.createCollection(COLLECTION_NAME));
    }
  
    @Test
    public void testCreateCollectionShouldThrowErrorIfDatabaseFailsToListCollectionNames() {
      when(mongoClient.getDatabase(anyString()).listCollectionNames()).thenReturn(null);
  
      assertThrows(
          MongoDBResourceManagerException.class, () -> testManager.createCollection(COLLECTION_NAME));
    }
  
    @Test
    public void testCreateCollectionShouldThrowErrorWhenMongoDBFailsToCreateCollection() {
      MongoDatabase mockDatabase = mongoClient.getDatabase(anyString());
      doThrow(IllegalArgumentException.class).when(mockDatabase).createCollection(anyString());
  
      assertThrows(
          MongoDBResourceManagerException.class, () -> testManager.createCollection(COLLECTION_NAME));
    }
  
    @Test
    public void testCreateCollectionShouldReturnTrueIfMongoDBDoesNotThrowAnyError() {
      assertThat(testManager.createCollection(COLLECTION_NAME)).isEqualTo(true);
      verify(mongoClient.getDatabase(anyString())).createCollection(anyString());
    }
  
    @Test
    public void testCreateCollectionShouldReturnFalseIfCollectionAlreadyExists() {
      when(mongoClient.getDatabase(anyString()).listCollectionNames().iterator().hasNext())
          .thenReturn(true, false);
      when(mongoClient.getDatabase(anyString()).listCollectionNames().iterator().next())
          .thenReturn(COLLECTION_NAME);
  
      assertThat(testManager.createCollection(COLLECTION_NAME)).isEqualTo(false);
      verify(mongoClient.getDatabase(anyString()), never()).getCollection(anyString());
    }
  
    @Test
    public void testInsertDocumentsShouldCreateCollectionIfOneDoesNotExist() {
      assertThat(testManager.insertDocument(COLLECTION_NAME, new Document())).isEqualTo(true);
  
      verify(mongoClient.getDatabase(anyString())).getCollection(anyString());
      verify(mongoClient.getDatabase(anyString())).listCollectionNames();
      verify(mongoClient.getDatabase(anyString()).getCollection(anyString())).insertMany(any());
    }
  
    @Test
    public void
        testInsertDocumentsShouldCreateCollectionIfUsingStaticDatabaseAndCollectionDoesNotExist() {
      MongoDBResourceManager.Builder builder =
          MongoDBResourceManager.builder(TEST_ID).setDatabaseName(STATIC_DATABASE_NAME);
      MongoDBResourceManager tm = new MongoDBResourceManager(mongoClient, container, builder);
  
      assertThat(tm.insertDocument(COLLECTION_NAME, new Document())).isEqualTo(true);
  
      verify(mongoClient.getDatabase(anyString())).getCollection(anyString());
      verify(mongoClient.getDatabase(anyString())).listCollectionNames();
      verify(mongoClient.getDatabase(anyString()).getCollection(anyString())).insertMany(any());
    }
  
    @Test
    public void testInsertDocumentsShouldReturnTrueIfUsingStaticDatabaseAndCollectionDoesExist() {
      when(mongoClient.getDatabase(anyString()).listCollectionNames().iterator().hasNext())
          .thenReturn(true, false);
      when(mongoClient.getDatabase(anyString()).listCollectionNames().iterator().next())
          .thenReturn(COLLECTION_NAME);
  
      MongoDBResourceManager.Builder builder =
          MongoDBResourceManager.builder(TEST_ID).setDatabaseName(STATIC_DATABASE_NAME);
      MongoDBResourceManager tm = new MongoDBResourceManager(mongoClient, container, builder);
  
      assertThat(tm.insertDocument(COLLECTION_NAME, new Document())).isEqualTo(true);
  
      verify(mongoClient.getDatabase(anyString())).getCollection(anyString());
      verify(mongoClient.getDatabase(anyString()).getCollection(anyString())).insertMany(any());
    }
  
    @Test
    public void testInsertDocumentsShouldThrowErrorWhenMongoDBThrowsException() {
      when(mongoClient.getDatabase(anyString()).listCollectionNames().iterator().hasNext())
          .thenReturn(true, false);
      when(mongoClient.getDatabase(anyString()).listCollectionNames().iterator().next())
          .thenReturn(COLLECTION_NAME);
      MongoCollection<Document> mockCollection =
          mongoClient.getDatabase(anyString()).getCollection(anyString());
  
      doThrow(MongoBulkWriteException.class)
          .when(mockCollection)
          .insertMany(ImmutableList.of(new Document()));
  
      assertThrows(
          MongoDBResourceManagerException.class,
          () -> testManager.insertDocument(COLLECTION_NAME, new Document()));
    }
  
    @Test
    public void testReadCollectionShouldThrowErrorWhenCollectionDoesNotExist() {
      when(mongoClient.getDatabase(anyString()).listCollectionNames().iterator().hasNext())
          .thenReturn(true, false);
      when(mongoClient.getDatabase(anyString()).listCollectionNames().iterator().next())
          .thenReturn("fake-collection-name");
  
      assertThrows(
          MongoDBResourceManagerException.class, () -> testManager.readCollection(COLLECTION_NAME));
    }
  
    @Test
    public void testReadCollectionShouldThrowErrorWhenMongoDBFailsToFindDocuments() {
      when(mongoClient.getDatabase(anyString()).listCollectionNames().iterator().hasNext())
          .thenReturn(true, false);
      when(mongoClient.getDatabase(anyString()).listCollectionNames().iterator().next())
          .thenReturn(COLLECTION_NAME);
      MongoCollection<Document> mockCollection =
          mongoClient.getDatabase(anyString()).getCollection(anyString());
      doThrow(RuntimeException.class).when(mockCollection).find();
  
      assertThrows(
          MongoDBResourceManagerException.class, () -> testManager.readCollection(COLLECTION_NAME));
    }
  
    @Test
    public void testReadCollectionShouldWorkWhenMongoDBDoesNotThrowAnyError() {
      when(mongoClient.getDatabase(anyString()).listCollectionNames().iterator().hasNext())
          .thenReturn(true, false);
      when(mongoClient.getDatabase(anyString()).listCollectionNames().iterator().next())
          .thenReturn(COLLECTION_NAME);
  
      testManager.readCollection(COLLECTION_NAME);
  
      verify(mongoClient.getDatabase(anyString()).getCollection(anyString())).find();
    }
  
    @Test
    public void testCleanupAllShouldNotDropStaticDatabase() {
      MongoDBResourceManager.Builder builder =
          MongoDBResourceManager.builder(TEST_ID).setDatabaseName(STATIC_DATABASE_NAME);
      MongoDBResourceManager tm = new MongoDBResourceManager(mongoClient, container, builder);
  
      tm.cleanupAll();
  
      verify(mongoClient, never()).getDatabase(anyString());
      verify(mongoClient.getDatabase(anyString()), never()).drop();
      verify(mongoClient).close();
    }
  
    @Test
    public void testCleanupShouldDropNonStaticDatabase() {
      testManager.cleanupAll();
  
      verify(mongoClient.getDatabase(anyString())).drop();
      verify(mongoClient).close();
    }
  
    @Test
    public void testCleanupAllShouldThrowErrorWhenMongoClientFailsToDropDatabase() {
      MongoDatabase mockDatabase = mongoClient.getDatabase(anyString());
      doThrow(RuntimeException.class).when(mockDatabase).drop();
  
      assertThrows(MongoDBResourceManagerException.class, () -> testManager.cleanupAll());
    }
  
    @Test
    public void testCleanupAllShouldThrowErrorWhenMongoClientFailsToClose() {
      doThrow(RuntimeException.class).when(mongoClient).close();
  
      assertThrows(MongoDBResourceManagerException.class, () -> testManager.cleanupAll());
    }
  }
  