/**
* 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.io;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Random;
import org.apache.avro.util.Utf8;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;
public class TestBinaryEncoderFidelity {
static byte[] legacydata;
static byte[] complexdata;
EncoderFactory factory = EncoderFactory.get();
public static void generateData(Encoder e, boolean useReadOnlyByteBuffer) throws IOException {
// generate a bunch of data that should test the bounds of a BinaryEncoder
Random r = new Random(665321);
e.writeNull();
e.writeBoolean(true);
e.writeBoolean(false);
byte[] bytes = new byte[10];
ByteBuffer bb;
if (useReadOnlyByteBuffer) {
bb = ByteBuffer.wrap(bytes, 4, 4).asReadOnlyBuffer();
} else {
bb = ByteBuffer.wrap(bytes, 4, 4);
}
r.nextBytes(bytes);
e.writeBytes(bytes);
e.writeBytes(new byte[0]);
e.writeBytes(bytes, 3, 3);
e.writeBytes(new byte[0], 0, 0);
e.writeBytes(ByteBuffer.wrap(bytes, 2, 2));
e.writeBytes(bb);
e.writeBytes(bb);
e.writeDouble(0.0);
e.writeDouble(-0.0);
e.writeDouble(Double.NaN);
e.writeDouble(r.nextDouble());
e.writeDouble(Double.NEGATIVE_INFINITY);
e.writeEnum(65);
e.writeFixed(bytes);
e.writeFixed(bytes, 7, 2);
e.writeFloat(1.0f);
e.writeFloat(r.nextFloat());
e.writeFloat(Float.POSITIVE_INFINITY);
e.writeFloat(Float.MIN_NORMAL);
e.writeIndex(-2);
e.writeInt(0);
e.writeInt(-1);
e.writeInt(1);
e.writeInt(0x40);
e.writeInt(-0x41);
e.writeInt(0x2000);
e.writeInt(-0x2001);
e.writeInt(0x80000);
e.writeInt(-0x80001);
e.writeInt(0x4000000);
e.writeInt(-0x4000001);
e.writeInt(r.nextInt());
e.writeInt(r.nextInt());
e.writeInt(Integer.MAX_VALUE);
e.writeInt(Integer.MIN_VALUE);
e.writeLong(0);
e.writeLong(-1);
e.writeLong(1);
e.writeLong(0x40);
e.writeLong(-0x41);
e.writeLong(0x2000);
e.writeLong(-0x2001);
e.writeLong(0x80000);
e.writeLong(-0x80001);
e.writeLong(0x4000000);
e.writeLong(-0x4000001);
e.writeLong(0x200000000L);
e.writeLong(-0x200000001L);
e.writeLong(0x10000000000L);
e.writeLong(-0x10000000001L);
e.writeLong(0x800000000000L);
e.writeLong(-0x800000000001L);
e.writeLong(0x40000000000000L);
e.writeLong(-0x40000000000001L);
e.writeLong(0x2000000000000000L);
e.writeLong(-0x2000000000000001L);
e.writeLong(r.nextLong());
e.writeLong(r.nextLong());
e.writeLong(Long.MAX_VALUE);
e.writeLong(Long.MIN_VALUE);
e.writeString(new StringBuilder("StringBuilder\u00A2"));
e.writeString("String\u20AC");
e.writeString("");
e.writeString(new Utf8("Utf8\uD834\uDD1E"));
if (e instanceof BinaryEncoder) {
int count = ((BinaryEncoder)e).bytesBuffered();
System.out.println(e.getClass().getSimpleName() + " buffered: " + count);
}
e.flush();
}
static void generateComplexData(Encoder e) throws IOException {
e.writeArrayStart();
e.setItemCount(1);
e.startItem();
e.writeInt(1);
e.writeArrayEnd();
e.writeMapStart();
e.setItemCount(2);
e.startItem();
e.writeString("foo");
e.writeInt(-1);
e.writeDouble(33.3);
e.startItem();
e.writeString("bar");
e.writeInt(1);
e.writeDouble(-33.3);
e.writeMapEnd();
e.flush();
}
@BeforeClass
public static void generateLegacyData() throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
Encoder e = new LegacyBinaryEncoder(baos);
generateData(e, false);
legacydata = baos.toByteArray();
baos.reset();
generateComplexData(e);
complexdata = baos.toByteArray();
}
@Test
public void testBinaryEncoder() throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
BinaryEncoder e = factory.binaryEncoder(baos, null);
generateData(e, true);
byte[] result = baos.toByteArray();
Assert.assertEquals(legacydata.length, result.length);
Assert.assertArrayEquals(legacydata, result);
baos.reset();
generateComplexData(e);
byte[] result2 = baos.toByteArray();
Assert.assertEquals(complexdata.length, result2.length);
Assert.assertArrayEquals(complexdata, result2);
}
@Test
public void testDirectBinaryEncoder() throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
BinaryEncoder e = factory.directBinaryEncoder(baos, null);
generateData(e, true);
byte[] result = baos.toByteArray();
Assert.assertEquals(legacydata.length, result.length);
Assert.assertArrayEquals(legacydata, result);
baos.reset();
generateComplexData(e);
byte[] result2 = baos.toByteArray();
Assert.assertEquals(complexdata.length, result2.length);
Assert.assertArrayEquals(complexdata, result2);
}
@Test
public void testBlockingBinaryEncoder() throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
BinaryEncoder e = factory.blockingBinaryEncoder(baos, null);
generateData(e, true);
byte[] result = baos.toByteArray();
Assert.assertEquals(legacydata.length, result.length);
Assert.assertArrayEquals(legacydata, result);
baos.reset();
generateComplexData(e);
byte[] result2 = baos.toByteArray();
// blocking will cause different length, should be two bytes larger
Assert.assertEquals(complexdata.length + 2, result2.length);
// the first byte is the array start, with the count of items negative
Assert.assertEquals(complexdata[0] >>> 1, result2[0]);
}
}