/**
* Copyright (C) 2010 Zhang, Guilin <guilin.zhang@hotmail.com>
*
* Licensed 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 com.google.code.http4j;
import java.net.InetAddress;
import java.net.UnknownHostException;
import org.testng.Assert;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
import com.google.code.http4j.utils.Metrics;
import com.google.code.http4j.utils.ThreadLocalMetricsRecorder;
/**
* @author <a href="mailto:guilin.zhang@hotmail.com">Zhang, Guilin</a>
*/
public final class DNSTestCase {
private InetAddress address;
private String host;
@BeforeClass
public void beforeClass() {
host = "www.hao123.com";
}
@Test
public void getAddress() throws UnknownHostException {
address = DNS.getAddress(host);
Assert.assertNotNull(address);
Metrics metrics = ThreadLocalMetricsRecorder.getInstance().captureMetrics();
Assert.assertTrue(metrics.getDnsLookupCost() > 0);
}
@Test(dependsOnMethods = "getAddress")
public void cache() throws UnknownHostException {
InetAddress original = InetAddress.getByName(host);
DNS.CachedDNS cached = new DNS.CachedDNS();
cached.cache(host, original);
DNS.useCache(true);
address = DNS.getAddress(host);
Assert.assertNotNull(address);
Metrics metrics = ThreadLocalMetricsRecorder.getInstance().captureMetrics();
Assert.assertEquals(metrics.getDnsLookupCost(), 0);
}
}