okhttp3.FakeDns Maven / Gradle / Ivy
/*
* Copyright (C) 2012 Square, Inc.
*
* 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 okhttp3;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import static org.junit.Assert.assertEquals;
public final class FakeDns implements Dns {
private List requestedHosts = new ArrayList<>();
private List addresses = Collections.emptyList();
/** Sets the addresses to be returned by this fake DNS service. */
public FakeDns addresses(List addresses) {
this.addresses = new ArrayList<>(addresses);
return this;
}
/** Sets the service to throw when a hostname is requested. */
public FakeDns unknownHost() {
this.addresses = Collections.emptyList();
return this;
}
public InetAddress address(int index) {
return addresses.get(index);
}
@Override public List lookup(String hostname) throws UnknownHostException {
requestedHosts.add(hostname);
if (addresses.isEmpty()) throw new UnknownHostException();
return addresses;
}
public void assertRequests(String... expectedHosts) {
assertEquals(Arrays.asList(expectedHosts), requestedHosts);
requestedHosts.clear();
}
}