/*
 * Copyright (c) 2015 AsyncHttpClient Project. All rights reserved.
 *
 * This program is licensed to you under the Apache License Version 2.0,
 * and you may not use this file except in compliance with the Apache License Version 2.0.
 * You may obtain a copy of the Apache License Version 2.0 at
 *     http://www.apache.org/licenses/LICENSE-2.0.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the Apache License Version 2.0 is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Apache License Version 2.0 for the specific language governing permissions and limitations there under.
 */
package org.asynchttpclient;

import org.testng.Assert;
import org.testng.annotations.Test;

import java.util.Arrays;
import java.util.Random;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;

import static org.asynchttpclient.Dsl.asyncHttpClient;
import static org.asynchttpclient.Dsl.config;

/**
 * Tests configured client name is used for thread names.
 *
 * @author Stepan Koltsov
 */
public class ThreadNameTest extends AbstractBasicTest {

  private static Thread[] getThreads() {
    int count = Thread.activeCount() + 1;
    for (; ; ) {
      Thread[] threads = new Thread[count];
      int filled = Thread.enumerate(threads);
      if (filled < threads.length) {
        return Arrays.copyOf(threads, filled);
      }

      count *= 2;
    }
  }

  @Test
  public void testThreadName() throws Exception {
    String threadPoolName = "ahc-" + (new Random().nextLong() & 0x7fffffffffffffffL);
    try (AsyncHttpClient client = asyncHttpClient(config().setThreadPoolName(threadPoolName))) {
      Future<Response> f = client.prepareGet("http://localhost:" + port1 + "/").execute();
      f.get(3, TimeUnit.SECONDS);

      // We cannot assert that all threads are created with specified name,
      // so we checking that at least one thread is.
      boolean found = false;
      for (Thread thread : getThreads()) {
        if (thread.getName().startsWith(threadPoolName)) {
          found = true;
          break;
        }
      }

      Assert.assertTrue(found, "must found threads starting with random string " + threadPoolName);
    }
  }
}