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.activemq.transport.amqp.message;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertTrue;
  
  import java.nio.charset.StandardCharsets;
  import java.util.UUID;
  
  import org.apache.qpid.proton.codec.AMQPDefinedTypes;
  import org.apache.qpid.proton.codec.DecoderImpl;
  import org.apache.qpid.proton.codec.EncoderImpl;
  import org.apache.qpid.proton.codec.EncodingCodes;
  import org.apache.qpid.proton.codec.PrimitiveTypeEncoding;
  import org.apache.qpid.proton.codec.ReadableBuffer;
  import org.fusesource.hawtbuf.UTF8Buffer;
  import org.junit.Before;
  import org.junit.Test;
  
  /**
   * Test the UTF8Buffer type encoder
   */
  public class UTF8BufferTypeTest {
  
      private final UTF8BufferType utf8BufferEncoding;
      private final DecoderImpl decoder = new DecoderImpl();
      private final EncoderImpl encoder = new EncoderImpl(decoder);
      {
          AMQPDefinedTypes.registerAllTypes(decoder, encoder);
  
          utf8BufferEncoding = new UTF8BufferType(encoder, decoder);
  
          encoder.register(utf8BufferEncoding);
      }
  
      private String smallString = UUID.randomUUID().toString();
      private String largeString = UUID.randomUUID().toString() + UUID.randomUUID().toString() +
                                   UUID.randomUUID().toString() + UUID.randomUUID().toString() +
                                   UUID.randomUUID().toString() + UUID.randomUUID().toString() +
                                   UUID.randomUUID().toString() + UUID.randomUUID().toString();
  
      private UTF8Buffer smallBuffer;
      private UTF8Buffer largeBuffer;
  
      @Before
      public void setUp() {
          smallBuffer = new UTF8Buffer(smallString.getBytes(StandardCharsets.UTF_8));
          largeBuffer = new UTF8Buffer(largeString.getBytes(StandardCharsets.UTF_8));
      }
  
      @Test
      public void testGetAllEncodings() {
          assertEquals(2, utf8BufferEncoding.getAllEncodings().size());
      }
  
      @Test
      public void testGetTypeClass() {
          assertEquals(UTF8Buffer.class, utf8BufferEncoding.getTypeClass());
      }
  
      @Test
      public void testGetCanonicalEncoding() {
          assertNotNull(utf8BufferEncoding.getCanonicalEncoding());
      }
  
      @Test
      public void testGetEncodingForSmallUTF8Buffer() {
          PrimitiveTypeEncoding<UTF8Buffer> encoding = utf8BufferEncoding.getEncoding(smallBuffer);
  
          assertTrue(encoding instanceof UTF8BufferType.SmallUTF8BufferEncoding);
          assertEquals(1, encoding.getConstructorSize());
          assertEquals(smallBuffer.getLength() + Byte.BYTES, encoding.getValueSize(smallBuffer));
          assertEquals(EncodingCodes.STR8, encoding.getEncodingCode());
          assertFalse(encoding.encodesJavaPrimitive());
          assertEquals(utf8BufferEncoding, encoding.getType());
      }
  
      @Test
      public void testGetEncodingForLargeUTF8Buffer() {
          PrimitiveTypeEncoding<UTF8Buffer> encoding = utf8BufferEncoding.getEncoding(largeBuffer);
  
          assertTrue(encoding instanceof UTF8BufferType.LargeUTF8BufferEncoding);
          assertEquals(1, encoding.getConstructorSize());
          assertEquals(largeBuffer.getLength() + Integer.BYTES, encoding.getValueSize(largeBuffer));
          assertEquals(EncodingCodes.STR32, encoding.getEncodingCode());
          assertFalse(encoding.encodesJavaPrimitive());
          assertEquals(utf8BufferEncoding, encoding.getType());
      }
  
      @Test
      public void testEncodeDecodeEmptyStringBuffer() {
          final AmqpWritableBuffer buffer = new AmqpWritableBuffer();
          encoder.setByteBuffer(buffer);
          encoder.writeObject(new UTF8Buffer(""));
  
          byte[] copy = new byte[buffer.getArrayLength()];
          System.arraycopy(buffer.getArray(), 0, copy, 0, buffer.getArrayLength());
  
          ReadableBuffer encoded = ReadableBuffer.ByteBufferReader.wrap(copy);
          decoder.setBuffer(encoded);
  
          Object valueRead = decoder.readObject();
          assertTrue(valueRead instanceof String);
          String decodedString = (String) valueRead;
          assertEquals("", decodedString);
      }
  
      @Test
      public void testEncodeDecodeSmallBuffer() {
          final AmqpWritableBuffer buffer = new AmqpWritableBuffer();
          encoder.setByteBuffer(buffer);
          encoder.writeObject(smallBuffer);
  
          byte[] copy = new byte[buffer.getArrayLength()];
          System.arraycopy(buffer.getArray(), 0, copy, 0, buffer.getArrayLength());
  
          ReadableBuffer encoded = ReadableBuffer.ByteBufferReader.wrap(copy);
          decoder.setBuffer(encoded);
  
          Object valueRead = decoder.readObject();
          assertTrue(valueRead instanceof String);
          String decodedString = (String) valueRead;
          assertEquals(smallString, decodedString);
      }
  
      @Test
      public void testEncodeDecodeLargeBuffer() {
          final AmqpWritableBuffer buffer = new AmqpWritableBuffer();
          encoder.setByteBuffer(buffer);
          encoder.writeObject(largeBuffer);
  
          byte[] copy = new byte[buffer.getArrayLength()];
          System.arraycopy(buffer.getArray(), 0, copy, 0, buffer.getArrayLength());
  
          ReadableBuffer encoded = ReadableBuffer.ByteBufferReader.wrap(copy);
          decoder.setBuffer(encoded);
  
          Object valueRead = decoder.readObject();
          assertTrue(valueRead instanceof String);
          String decodedString = (String) valueRead;
          assertEquals(largeString, decodedString);
      }
  }
  