lang/java/avro/src/test/java/org/apache/avro/TestDataFileMeta.java

/**
 * 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.avro;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

import junit.framework.Assert;

import org.apache.avro.Schema.Type;
import org.apache.avro.file.DataFileStream;
import org.apache.avro.file.DataFileWriter;
import org.apache.avro.generic.GenericDatumReader;
import org.apache.avro.generic.GenericDatumWriter;
import org.junit.Test;

public class TestDataFileMeta {
  @Test(expected=AvroRuntimeException.class)
  public void testUseReservedMeta() {
    DataFileWriter<?> w = new DataFileWriter<Object>(new GenericDatumWriter<Object>());
    w.setMeta("avro.foo", "bar");
  }

  @Test()
  public void testUseMeta() throws IOException {
    DataFileWriter<?> w = new DataFileWriter<Object>(new GenericDatumWriter<Object>());
    File f = AvroTestUtil.tempFile(getClass(), "testDataFileMeta.avro");
    w.setMeta("hello", "bar");
    w.create(Schema.create(Type.NULL), f);
    w.close();

    DataFileStream<Void> r = new DataFileStream<Void>(new FileInputStream(f), new GenericDatumReader<Void>());

    assertTrue(r.getMetaKeys().contains("hello"));

    assertEquals("bar", r.getMetaString("hello"));
  }

  @Test(expected=AvroRuntimeException.class)
  public void testUseMetaAfterCreate() throws IOException {
    DataFileWriter<?> w = new DataFileWriter<Object>(new GenericDatumWriter<Object>());
    w.create(Schema.create(Type.NULL), new ByteArrayOutputStream());
    w.setMeta("foo", "bar");
  }

  @Test
  public void testBlockSizeSetInvalid() {
    int exceptions = 0;
    for (int i = -1; i < 33; i++) {
      // 33 invalid, one valid
      try {
        new DataFileWriter<Object>(new GenericDatumWriter<Object>()).setSyncInterval(i);
      } catch (IllegalArgumentException iae) {
        exceptions++;
      }
    }
    Assert.assertEquals(33, exceptions);
  }
}