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
   *
   *     https://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.avro.tool;
  
  import org.apache.avro.Schema;
  import org.apache.avro.Schema.Type;
  import org.apache.avro.file.DataFileWriter;
  import org.apache.avro.generic.GenericDatumWriter;
  import org.junit.Rule;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.io.TempDir;
  import org.junit.rules.TestName;
  
  import java.io.ByteArrayOutputStream;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  import java.io.File;
  import java.io.FileNotFoundException;
  import java.io.PrintStream;
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.List;
  import java.util.stream.Collectors;
  import java.util.stream.IntStream;
  
  public class TestRecordCountTool {
  
    @Rule
    public TestName name = new TestName();
    @TempDir
    public File temporaryFolder;
  
    private File generateData(int numRecords) throws Exception {
      final File tempFile = File.createTempFile("junit", null, temporaryFolder);
  
      Schema schema = Schema.create(Type.STRING);
      try (DataFileWriter<Object> writer = new DataFileWriter<>(new GenericDatumWriter<>(schema))) {
        writer.create(schema, tempFile);
  
        // ~10 records per block
        writer.setSyncInterval(60);
        for (int i = 0; i < numRecords; i++) {
          writer.append("foobar");
        }
      }
      return tempFile;
    }
  
    @Test
    void fileDoesNotExist() throws Exception {
      assertThrows(FileNotFoundException.class, () -> {
        List<String> args = Collections.singletonList(new File(temporaryFolder, "nonExistingFile").getAbsolutePath());
        int returnCode = new RecordCountTool().run(System.in, System.out, System.err, args);
        assertEquals(1, returnCode);
      });
    }
  
    @Test
    void basic() throws Exception {
      final List<Integer> inputSizes = IntStream.range(0, 20).boxed().collect(Collectors.toList());
      for (Integer inputSize : inputSizes) {
        File inputFile = generateData(inputSize);
        List<String> args = Collections.singletonList(inputFile.getAbsolutePath());
        final ByteArrayOutputStream out = new ByteArrayOutputStream();
        int returnCode = new RecordCountTool().run(System.in, new PrintStream(out), System.err, args);
  
        assertEquals(0, returnCode);
        assertEquals(inputSize.toString() + System.lineSeparator(), out.toString());
      }
    }
  
    @Test
    void multipleFiles() throws Exception {
      File f1 = generateData(20);
      File f2 = generateData(200);
  
      List<String> args = Arrays.asList(f1.getAbsolutePath(), f2.getAbsolutePath());
      final ByteArrayOutputStream out = new ByteArrayOutputStream();
      int returnCode = new RecordCountTool().run(System.in, new PrintStream(out), System.err, args);
  
      assertEquals(0, returnCode);
      assertEquals("220" + System.lineSeparator(), out.toString());
    }
  
  }
  