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/*
* Copyright © 2016-2018 European Support Limited
*
* 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 org.openecomp.sdc.logging.context;
import static org.junit.Assert.assertTrue;
import java.net.InetAddress;
import java.net.UnknownHostException;
import org.easymock.EasyMock;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.api.easymock.PowerMock;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;
/**
* Retrieval and caching of host address.
*
* @author evitaliy
* @since 28 Mar 2018
*/
@PrepareForTest(InetAddress.class)
@RunWith(PowerMockRunner.class)
public class HostAddressCacheTest {
@Test
public void hostAddressIsAlwaysPopulated() {
assertTrue(new HostAddressCache().get().isPresent());
}
@Test
public void cachedAddressRemainsTheSameWhenGotWithingRefreshInterval() throws UnknownHostException {
mockInetAddress(1);
HostAddressCache addressCache = new HostAddressCache(1000);
addressCache.get();
addressCache.get();
}
@Test
public void cachedAddressReplacedWhenGotAfterRefreshInterval() throws UnknownHostException {
mockInetAddress(2);
HostAddressCache addressCache = new HostAddressCache(-1);
addressCache.get();
addressCache.get();
}
private void mockInetAddress(int times) throws UnknownHostException {
InetAddress inetAddress = EasyMock.mock(InetAddress.class);
EasyMock.replay(inetAddress);
PowerMock.mockStatic(InetAddress.class);
//noinspection ResultOfMethodCallIgnored
InetAddress.getLocalHost();
PowerMock.expectLastCall().andReturn(inetAddress).times(times);
PowerMock.replay(InetAddress.class);
}
}
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