openecomp-be/lib/openecomp-sdc-logging-lib/openecomp-sdc-logging-core/src/test/java/org/openecomp/sdc/logging/context/HostAddressCacheTest.java

   1 /*
   2  * Copyright © 2016-2018 European Support Limited
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.openecomp.sdc.logging.context;
  18
  19 import static org.junit.Assert.assertTrue;
  20
  21 import java.net.InetAddress;
  22 import java.net.UnknownHostException;
  23 import org.easymock.EasyMock;
  24 import org.junit.Test;
  25 import org.junit.runner.RunWith;
  26 import org.powermock.api.easymock.PowerMock;
  27 import org.powermock.core.classloader.annotations.PrepareForTest;
  28 import org.powermock.modules.junit4.PowerMockRunner;
  29
  30 /**
  31  * Retrieval and caching of host address.
  32  *
  33  * @author evitaliy
  34  * @since 28 Mar 2018
  35  */
  36 @PrepareForTest(InetAddress.class)
  37 @RunWith(PowerMockRunner.class)
  38 public class HostAddressCacheTest {
  39
  40     @Test
  41     public void hostAddressIsAlwaysPopulated() {
  42         assertTrue(new HostAddressCache().get().isPresent());
  43     }
  44
  45     @Test
  46     public void cachedAddressRemainsTheSameWhenGotWithingRefreshInterval() throws UnknownHostException {
  47         mockInetAddress(1);
  48         HostAddressCache addressCache = new HostAddressCache(1000);
  49         addressCache.get();
  50         addressCache.get();
  51     }
  52
  53     @Test
  54     public void cachedAddressReplacedWhenGotAfterRefreshInterval() throws UnknownHostException {
  55         mockInetAddress(2);
  56         HostAddressCache addressCache = new HostAddressCache(-1);
  57         addressCache.get();
  58         addressCache.get();
  59     }
  60
  61     private void mockInetAddress(int times) throws UnknownHostException {
  62         InetAddress inetAddress = EasyMock.mock(InetAddress.class);
  63         EasyMock.replay(inetAddress);
  64         PowerMock.mockStatic(InetAddress.class);
  65         //noinspection ResultOfMethodCallIgnored
  66         InetAddress.getLocalHost();
  67         PowerMock.expectLastCall().andReturn(inetAddress).times(times);
  68         PowerMock.replay(InetAddress.class);
  69     }
  70 }