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.flink.connectors.kudu.format;
  
  import org.apache.flink.connectors.kudu.connector.KuduTableInfo;
  import org.apache.flink.connectors.kudu.connector.KuduTestBase;
  import org.apache.flink.connectors.kudu.connector.convertor.RowResultRowConvertor;
  import org.apache.flink.connectors.kudu.connector.reader.KuduInputSplit;
  import org.apache.flink.connectors.kudu.connector.reader.KuduReaderConfig;
  import org.apache.flink.types.Row;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.Test;
  
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.List;
  
  class KuduRowInputFormatTest extends KuduTestBase {
  
      @Test
      void testInvalidKuduMaster() {
          KuduTableInfo tableInfo = booksTableInfo("books", false);
          Assertions.assertThrows(NullPointerException.class, () -> new KuduRowInputFormat(null,
                  new RowResultRowConvertor(), tableInfo));
      }
  
      @Test
      void testInvalidTableInfo() {
          String masterAddresses = getMasterAddress();
          KuduReaderConfig readerConfig = KuduReaderConfig.Builder.setMasters(masterAddresses).build();
          Assertions.assertThrows(NullPointerException.class, () -> new KuduRowInputFormat(readerConfig,
                  new RowResultRowConvertor(), null));
      }
  
      @Test
      void testInputFormat() throws Exception {
          KuduTableInfo tableInfo = booksTableInfo("books", true);
          setUpDatabase(tableInfo);
  
          List<Row> rows = readRows(tableInfo);
          Assertions.assertEquals(5, rows.size());
  
          cleanDatabase(tableInfo);
      }
  
      @Test
      void testInputFormatWithProjection() throws Exception {
          KuduTableInfo tableInfo = booksTableInfo("books", true);
          setUpDatabase(tableInfo);
  
          List<Row> rows = readRows(tableInfo, "title", "id");
          Assertions.assertEquals(5, rows.size());
  
          for (Row row : rows) {
              Assertions.assertEquals(2, row.getArity());
          }
  
          cleanDatabase(tableInfo);
      }
  
      private List<Row> readRows(KuduTableInfo tableInfo, String... fieldProjection) throws Exception {
          String masterAddresses = getMasterAddress();
          KuduReaderConfig readerConfig = KuduReaderConfig.Builder.setMasters(masterAddresses).build();
          KuduRowInputFormat inputFormat = new KuduRowInputFormat(readerConfig, new RowResultRowConvertor(), tableInfo,
                  new ArrayList<>(), fieldProjection == null ? null : Arrays.asList(fieldProjection));
  
          KuduInputSplit[] splits = inputFormat.createInputSplits(1);
          List<Row> rows = new ArrayList<>();
          for (KuduInputSplit split : splits) {
              inputFormat.open(split);
              while (!inputFormat.reachedEnd()) {
                  Row row = inputFormat.nextRecord(new Row(5));
                  if (row != null) {
                      rows.add(row);
                  }
              }
          }
          inputFormat.close();
  
          return rows;
      }
  }
  