content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.cloud.hypervisor.kvm.resource;
  
  import com.cloud.vm.VmDetailConstants;
  import org.junit.Assert;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.Parameterized;
  import org.mockito.Mockito;
  
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.HashMap;
  import java.util.Map;
  
  @RunWith(value = Parameterized.class)
  public class LibvirtCpuTopologyTest {
      private final LibvirtComputingResource libvirtComputingResource = Mockito.spy(new LibvirtComputingResource());
  
      private final String desc;
      private final Integer coresPerSocket;
      private final Integer threadsPerCore;
      private final Integer totalVmCores;
      private final String expectedXml;
  
      public LibvirtCpuTopologyTest(String desc, Integer coresPerSocket, Integer threadsPerCore, Integer totalVmCores, String expectedXml) {
          this.desc = desc;
          this.coresPerSocket = coresPerSocket;
          this.threadsPerCore = threadsPerCore;
          this.totalVmCores = totalVmCores;
          this.expectedXml = expectedXml;
      }
      @Parameterized.Parameters
      public static Collection<Object[]> data() {
          return Arrays.asList(new Object[][] {
                  createTestData("8 cores, 2 per socket",2, null, 8, "<cpu><topology sockets='4' cores='2' threads='1' /></cpu>"),
                  createTestData("8 cores, 4 per socket",4, null, 8, "<cpu><topology sockets='2' cores='4' threads='1' /></cpu>"),
                  createTestData("8 cores, nothing specified",null, null, 8, "<cpu><topology sockets='2' cores='4' threads='1' /></cpu>"),
                  createTestData("12 cores, nothing specified",null, null, 12, "<cpu><topology sockets='2' cores='6' threads='1' /></cpu>"),
                  createTestData("8 cores, 2C per socket, 2TPC",2, 2, 8, "<cpu><topology sockets='2' cores='2' threads='2' /></cpu>"),
                  createTestData("8 cores, 1C per socket, 2TPC",1, 2, 8, "<cpu><topology sockets='4' cores='1' threads='2' /></cpu>"),
                  createTestData("8 cores, default CPS, 2TPC",null, 2, 8, "<cpu><topology sockets='4' cores='1' threads='2' /></cpu>"),
                  createTestData("6 cores, default CPS, 2TPC",null, 2, 6, "<cpu><topology sockets='3' cores='1' threads='2' /></cpu>"),
                  createTestData("12 cores, 2CPS, 2TPC",2, 2, 12, "<cpu><topology sockets='3' cores='2' threads='2' /></cpu>"),
                  createTestData("6 cores, misconfigured cores, CPS, TPC, use default topology",2, 2, 6, "<cpu><topology sockets='1' cores='6' threads='1' /></cpu>"),
                  createTestData("odd cores, nothing specified use default topology",null, null, 3, "<cpu><topology sockets='3' cores='1' threads='1' /></cpu>"),
                  createTestData("odd cores, uneven CPS use default topology",2, null, 3, "<cpu><topology sockets='3' cores='1' threads='1' /></cpu>"),
                  createTestData("8 cores, 2 CPS, odd threads use default topology", 2, 3, 8, "<cpu><topology sockets='2' cores='4' threads='1' /></cpu>"),
                  createTestData("1 core, 2 CPS, odd threads use default topology", 2, 1, 1, "<cpu><topology sockets='1' cores='1' threads='1' /></cpu>")
          });
      }
  
      private static Object[] createTestData(String desc, Integer coresPerSocket, Integer threadsPerCore, int totalVmCores, String expected) {
          return new Object[] {desc, coresPerSocket, threadsPerCore, totalVmCores, expected};
      }
  
      @Test
      public void topologyTest() {
          LibvirtVMDef.CpuModeDef cpuModeDef = new LibvirtVMDef.CpuModeDef();
          Map<String, String> details = new HashMap<>();
  
          if (coresPerSocket != null) {
              details.put(VmDetailConstants.CPU_CORE_PER_SOCKET, coresPerSocket.toString());
          }
  
          if (threadsPerCore != null) {
              details.put(VmDetailConstants.CPU_THREAD_PER_CORE, threadsPerCore.toString());
          }
  
          if (coresPerSocket == null && threadsPerCore == null) {
              details = null;
          }
  
          libvirtComputingResource.setCpuTopology(cpuModeDef, totalVmCores, details);
          Assert.assertEquals(desc, expectedXml, cpuModeDef.toString());
      }
  }
  