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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.handler;
import com.yahoo.jdisc.Response;
import org.junit.jupiter.api.Test;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertSame;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assertions.fail;
/**
* @author Simon Thoresen Hult
*/
public class ResponseDispatchTestCase {
@Test
void requireThatFactoryMethodsWork() throws Exception {
{
FutureResponse handler = new FutureResponse();
ResponseDispatch.newInstance(69).dispatch(handler);
Response response = handler.get(600, TimeUnit.SECONDS);
assertNotNull(response);
assertEquals(69, response.getStatus());
}
{
FutureResponse handler = new FutureResponse();
Response sentResponse = new Response(69);
ResponseDispatch.newInstance(sentResponse).dispatch(handler);
Response receivedResponse = handler.get(600, TimeUnit.SECONDS);
assertSame(sentResponse, receivedResponse);
}
{
ReadableContentChannel content = new ReadableContentChannel();
FutureResponse handler = new FutureResponse(content);
ByteBuffer buf = ByteBuffer.allocate(69);
ResponseDispatch.newInstance(69, Arrays.asList(buf)).dispatch(handler);
Response response = handler.get(600, TimeUnit.SECONDS);
assertNotNull(response);
assertEquals(69, response.getStatus());
assertSame(buf, content.read());
assertNull(content.read());
}
{
ReadableContentChannel content = new ReadableContentChannel();
FutureResponse handler = new FutureResponse(content);
ByteBuffer buf = ByteBuffer.allocate(69);
ResponseDispatch.newInstance(69, Arrays.asList(buf)).dispatch(handler);
Response response = handler.get(600, TimeUnit.SECONDS);
assertNotNull(response);
assertEquals(69, response.getStatus());
assertSame(buf, content.read());
assertNull(content.read());
}
{
ReadableContentChannel content = new ReadableContentChannel();
FutureResponse handler = new FutureResponse(content);
ByteBuffer buf = ByteBuffer.allocate(69);
Response sentResponse = new Response(69);
ResponseDispatch.newInstance(sentResponse, Arrays.asList(buf)).dispatch(handler);
Response receivedResponse = handler.get(600, TimeUnit.SECONDS);
assertSame(sentResponse, receivedResponse);
assertSame(buf, content.read());
assertNull(content.read());
}
}
@Test
void requireThatResponseCanBeDispatched() throws Exception {
final Response response = new Response(Response.Status.OK);
final List<ByteBuffer> writtenContent = Arrays.asList(ByteBuffer.allocate(6), ByteBuffer.allocate(9));
ResponseDispatch dispatch = new ResponseDispatch() {
@Override
protected Response newResponse() {
return response;
}
@Override
protected Iterable<ByteBuffer> responseContent() {
return writtenContent;
}
};
ReadableContentChannel receivedContent = new ReadableContentChannel();
MyResponseHandler responseHandler = new MyResponseHandler(receivedContent);
dispatch.dispatch(responseHandler);
assertFalse(dispatch.isDone());
assertSame(response, responseHandler.response);
assertSame(writtenContent.get(0), receivedContent.read());
assertFalse(dispatch.isDone());
assertSame(writtenContent.get(1), receivedContent.read());
assertFalse(dispatch.isDone());
assertNull(receivedContent.read());
assertTrue(dispatch.isDone());
assertTrue(dispatch.get(600, TimeUnit.SECONDS));
assertTrue(dispatch.get());
}
@Test
void requireThatStreamCanBeConnected() throws IOException {
ReadableContentChannel responseContent = new ReadableContentChannel();
OutputStream out = new FastContentOutputStream(new ResponseDispatch() {
@Override
protected Response newResponse() {
return new Response(Response.Status.OK);
}
}.connect(new MyResponseHandler(responseContent)));
out.write(6);
out.write(9);
out.close();
InputStream in = responseContent.toStream();
assertEquals(6, in.read());
assertEquals(9, in.read());
assertEquals(-1, in.read());
}
@Test
void requireThatCancelIsUnsupported() {
ResponseDispatch dispatch = ResponseDispatch.newInstance(69);
assertFalse(dispatch.isCancelled());
try {
dispatch.cancel(true);
fail();
} catch (UnsupportedOperationException e) {
}
assertFalse(dispatch.isCancelled());
try {
dispatch.cancel(false);
fail();
} catch (UnsupportedOperationException e) {
}
assertFalse(dispatch.isCancelled());
}
@Test
void requireThatDispatchClosesContentIfWriteThrowsException() {
final AtomicBoolean closed = new AtomicBoolean(false);
try {
ResponseDispatch.newInstance(6, ByteBuffer.allocate(9)).dispatch(
new MyResponseHandler(new ContentChannel() {
@Override
public void write(ByteBuffer buf, CompletionHandler handler) {
throw new UnsupportedOperationException();
}
@Override
public void close(CompletionHandler handler) {
closed.set(true);
}
}));
fail();
} catch (UnsupportedOperationException e) {
}
assertTrue(closed.get());
}
@Test
void requireThatDispatchCanBeListenedTo() throws InterruptedException {
RunnableLatch listener = new RunnableLatch();
ReadableContentChannel responseContent = new ReadableContentChannel();
ResponseDispatch.newInstance(6, ByteBuffer.allocate(9))
.dispatch(new MyResponseHandler(responseContent))
.whenComplete((__, ___) -> listener.run());
assertFalse(listener.await(100, TimeUnit.MILLISECONDS));
assertNotNull(responseContent.read());
assertFalse(listener.await(100, TimeUnit.MILLISECONDS));
assertNull(responseContent.read());
assertTrue(listener.await(600, TimeUnit.SECONDS));
}
private static class MyResponseHandler implements ResponseHandler {
final ContentChannel content;
Response response;
MyResponseHandler(ContentChannel content) {
this.content = content;
}
@Override
public ContentChannel handleResponse(Response response) {
this.response = response;
return content;
}
}
}
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