/*
* The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
* (the "License"). You may not use this work except in compliance with the License, which is
* available at www.apache.org/licenses/LICENSE-2.0
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied, as more fully set forth in the License.
*
* See the NOTICE file distributed with this work for information regarding copyright ownership.
*/
package alluxio.network.protocol;
import alluxio.network.protocol.databuffer.DataByteBuffer;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import java.nio.ByteBuffer;
/**
* Unit tests for {@link RPCBlockReadResponse}.
*/
public class RPCBlockReadResponseTest {
private static final long BLOCK_ID = 1;
private static final long OFFSET = 2;
// The RPCMessageEncoder sends the payload separately from the message, so these unit tests only
// test the message encoding part. Therefore, the 'length' should be 0.
private static final long LENGTH = 0;
private static final long LOCK_ID = 4444;
private static final long SESSION_ID = 5555;
private static final RPCResponse.Status STATUS = RPCResponse.Status.SUCCESS;
/** The exception expected to be thrown. */
@Rule
public ExpectedException mThrown = ExpectedException.none();
private ByteBuf mBuffer = null;
private void assertValid(long blockId, long offset, long length, RPCResponse.Status status,
RPCBlockReadResponse resp) {
Assert.assertEquals(RPCMessage.Type.RPC_BLOCK_READ_RESPONSE, resp.getType());
Assert.assertEquals(blockId, resp.getBlockId());
Assert.assertEquals(offset, resp.getOffset());
Assert.assertEquals(length, resp.getLength());
Assert.assertEquals(status, resp.getStatus());
}
private void assertValid(RPCBlockReadResponse resp) {
try {
resp.validate();
} catch (Exception e) {
Assert.fail("response should be valid.");
}
}
/**
* Sets up the buffer before a test runs.
*/
@Before
public final void before() {
mBuffer = Unpooled.buffer();
}
/**
* Tests the {@link RPCBlockReadResponse#getEncodedLength()} method.
*/
@Test
public void encodedLength() {
RPCBlockReadResponse resp = new RPCBlockReadResponse(BLOCK_ID, OFFSET, LENGTH, null, STATUS);
int encodedLength = resp.getEncodedLength();
resp.encode(mBuffer);
Assert.assertEquals(encodedLength, mBuffer.readableBytes());
}
/**
* Tests the {@link RPCBlockReadResponse#encode(ByteBuf)} and
* {@link RPCBlockReadResponse#decode(ByteBuf)} methods.
*/
@Test
public void encodeDecode() {
RPCBlockReadResponse resp = new RPCBlockReadResponse(BLOCK_ID, OFFSET, LENGTH, null, STATUS);
resp.encode(mBuffer);
RPCBlockReadResponse resp2 = RPCBlockReadResponse.decode(mBuffer);
assertValid(BLOCK_ID, OFFSET, LENGTH, STATUS, resp);
assertValid(BLOCK_ID, OFFSET, LENGTH, STATUS, resp2);
}
/**
* Tests the {@link RPCBlockReadResponse#validate()} method.
*/
@Test
public void validate() {
RPCBlockReadResponse resp = new RPCBlockReadResponse(BLOCK_ID, OFFSET, LENGTH, null, STATUS);
assertValid(resp);
}
/**
* Tests the {@link RPCBlockReadResponse#getPayloadDataBuffer()} method.
*/
@Test
public void getPayloadDataBuffer() {
int length = 10;
DataByteBuffer payload = new DataByteBuffer(ByteBuffer.allocate(length), length);
RPCBlockReadResponse resp = new RPCBlockReadResponse(BLOCK_ID, OFFSET, LENGTH, payload, STATUS);
assertValid(resp);
Assert.assertEquals(payload, resp.getPayloadDataBuffer());
}
/**
* Tests the
* {@link RPCBlockReadResponse#createErrorResponse(RPCBlockReadRequest, RPCResponse.Status)}
* method.
*/
@Test
public void createErrorResponse() {
RPCBlockReadRequest req = new RPCBlockReadRequest(BLOCK_ID, OFFSET, LENGTH, LOCK_ID,
SESSION_ID);
for (RPCResponse.Status status : RPCResponse.Status.values()) {
if (status == RPCResponse.Status.SUCCESS) {
// cannot create an error response with a SUCCESS status.
mThrown.expect(IllegalArgumentException.class);
RPCBlockReadResponse.createErrorResponse(req, status);
} else {
RPCBlockReadResponse resp = RPCBlockReadResponse.createErrorResponse(req, status);
assertValid(BLOCK_ID, OFFSET, 0, status, resp);
}
}
}
}