Github user rafaelweingartner commented on a diff in the pull request:
https://github.com/apache/cloudstack/pull/1493#discussion_r59920010
--- Diff: utils/src/test/java/com/cloud/utils/testcase/NioTest.java ---
@@ -19,146 +19,198 @@
package com.cloud.utils.testcase;
-import java.nio.channels.ClosedChannelException;
-import java.util.Random;
-
-import junit.framework.TestCase;
-
-import org.apache.log4j.Logger;
-import org.junit.Assert;
-
+import com.cloud.utils.concurrency.NamedThreadFactory;
import com.cloud.utils.exception.NioConnectionException;
import com.cloud.utils.nio.HandlerFactory;
import com.cloud.utils.nio.Link;
import com.cloud.utils.nio.NioClient;
import com.cloud.utils.nio.NioServer;
import com.cloud.utils.nio.Task;
import com.cloud.utils.nio.Task.Type;
+import org.apache.log4j.Logger;
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
-/**
- *
- *
- *
- *
- */
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.nio.channels.ClosedChannelException;
+import java.nio.channels.Selector;
+import java.nio.channels.SocketChannel;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Random;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+public class NioTest {
-public class NioTest extends TestCase {
+ private static final Logger LOGGER = Logger.getLogger(NioTest.class);
- private static final Logger s_logger = Logger.getLogger(NioTest.class);
+ final private int totalTestCount = 10;
+ private int completedTestCount = 0;
- private NioServer _server;
- private NioClient _client;
+ private NioServer server;
+ private List<NioClient> clients = new ArrayList<>();
+ private List<NioClient> maliciousClients = new ArrayList<>();
- private Link _clientLink;
+ private ExecutorService clientExecutor =
Executors.newFixedThreadPool(totalTestCount, new
NamedThreadFactory("NioClientHandler"));;
+ private ExecutorService maliciousExecutor =
Executors.newFixedThreadPool(5*totalTestCount, new
NamedThreadFactory("MaliciousNioClientHandler"));;
- private int _testCount;
- private int _completedCount;
+ private Random randomGenerator = new Random();
+ private byte[] testBytes;
private boolean isTestsDone() {
boolean result;
synchronized (this) {
- result = _testCount == _completedCount;
+ result = totalTestCount == completedTestCount;
}
return result;
}
- private void getOneMoreTest() {
- synchronized (this) {
- _testCount++;
- }
- }
-
private void oneMoreTestDone() {
synchronized (this) {
- _completedCount++;
+ completedTestCount++;
}
}
- @Override
+ @Before
public void setUp() {
- s_logger.info("Test");
+ LOGGER.info("Setting up Benchmark Test");
- _testCount = 0;
- _completedCount = 0;
-
- _server = new NioServer("NioTestServer", 7777, 5, new
NioTestServer());
- try {
- _server.start();
- } catch (final NioConnectionException e) {
- fail(e.getMessage());
- }
+ completedTestCount = 0;
+ testBytes = new byte[1000000];
+ randomGenerator.nextBytes(testBytes);
- _client = new NioClient("NioTestServer", "127.0.0.1", 7777, 5, new
NioTestClient());
+ // Server configured with one worker
+ server = new NioServer("NioTestServer", 0, 1, new NioTestServer());
try {
- _client.start();
+ server.start();
} catch (final NioConnectionException e) {
- fail(e.getMessage());
+ Assert.fail(e.getMessage());
}
- while (_clientLink == null) {
- try {
- s_logger.debug("Link is not up! Waiting ...");
- Thread.sleep(1000);
- } catch (final InterruptedException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
+ // 5 malicious clients per valid client
+ for (int i = 0; i < totalTestCount; i++) {
+ for (int j = 0; j < 5; j++) {
+ final NioClient maliciousClient = new
NioMaliciousClient("NioMaliciousTestClient-" + i, "127.0.0.1",
server.getPort(), 1, new NioMaliciousTestClient());
+ maliciousClients.add(maliciousClient);
+ maliciousExecutor.submit(new
ThreadedNioClient(maliciousClient));
}
+ final NioClient client = new NioClient("NioTestClient-" + i,
"127.0.0.1", server.getPort(), 1, new NioTestClient());
+ clients.add(client);
+ clientExecutor.submit(new ThreadedNioClient(client));
}
}
- @Override
+ @After
public void tearDown() {
+ stopClient();
+ stopServer();
+ }
+
+ protected void stopClient() {
+ for (NioClient client : clients) {
+ client.stop();
+ }
+ for (NioClient maliciousClient : maliciousClients) {
+ maliciousClient.stop();
+ }
+ LOGGER.info("Clients stopped.");
+ }
+
+ protected void stopServer() {
+ server.stop();
+ LOGGER.info("Server stopped.");
+ }
+
+ @Test
+ public void testConnection() {
+ final long currentTime = System.currentTimeMillis();
while (!isTestsDone()) {
+ if (System.currentTimeMillis() - currentTime > 600000) {
+ Assert.fail("Failed to complete test within 600s");
+ }
try {
- s_logger.debug(_completedCount + "/" + _testCount + "
tests done. Waiting for completion");
+ LOGGER.debug(completedTestCount + "/" + totalTestCount + "
tests done. Waiting for completion");
Thread.sleep(1000);
} catch (final InterruptedException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
+ Assert.fail(e.getMessage());
}
}
- stopClient();
- stopServer();
+ LOGGER.debug(completedTestCount + "/" + totalTestCount + " tests
done.");
}
- protected void stopClient() {
- _client.stop();
- s_logger.info("Client stopped.");
+ protected void doServerProcess(final byte[] data) {
+ oneMoreTestDone();
+ Assert.assertArrayEquals(testBytes, data);
+ LOGGER.info("Verify data received by server done.");
}
- protected void stopServer() {
- _server.stop();
- s_logger.info("Server stopped.");
+ public byte[] getTestBytes() {
+ return testBytes;
}
- protected void setClientLink(final Link link) {
- _clientLink = link;
+ public class ThreadedNioClient implements Runnable {
+ final private NioClient client;
+ ThreadedNioClient(final NioClient client) {
+ this.client = client;
+ }
+
+ @Override
+ public void run() {
+ try {
+ client.start();
+ } catch (NioConnectionException e) {
+ Assert.fail(e.getMessage());
+ }
+ }
}
- Random randomGenerator = new Random();
+ public class NioMaliciousClient extends NioClient {
- byte[] _testBytes;
+ public NioMaliciousClient(String name, String host, int port, int
workers, HandlerFactory factory) {
+ super(name, host, port, workers, factory);
+ }
- public void testConnection() {
- _testBytes = new byte[1000000];
- randomGenerator.nextBytes(_testBytes);
- try {
- getOneMoreTest();
- _clientLink.send(_testBytes);
- s_logger.info("Client: Data sent");
- getOneMoreTest();
- _clientLink.send(_testBytes);
- s_logger.info("Client: Data sent");
- } catch (final ClosedChannelException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
+ @Override
+ protected void init() throws IOException {
+ _selector = Selector.open();
+ try {
+ _clientConnection = SocketChannel.open();
+ LOGGER.info("Connecting to " + _host + ":" + _port);
+ final InetSocketAddress peerAddr = new
InetSocketAddress(_host, _port);
+ _clientConnection.connect(peerAddr);
+ // Hang in there don't do anything
+ Thread.sleep(Long.MAX_VALUE);
--- End diff --
I believe the documentation explaining the class can help a little bit.
About the use of mocks, unit tests are java code; technically they can do
everything that we can do on any other java code. The question here is a more
philosophical one; as the name says, we should be dealing with units and not
whole components. I believe that we do not need to test if the resource/code
that our system is based on works, we have to assume they do. For instance
here, we do not need to check if the socket library Works, we have to assume it
does. We only need to test if our code is using them right, configuring them in
a way that suffices our needs.
I believe you did this whole test because the code is not prepared to be
tested using unit test and integration tests (integration tests are used to
test the integration/orchestration of unit methods).
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