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.resourcelimit;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.fail;
  import static org.mockito.Mockito.lenient;
  import static org.mockito.Mockito.when;
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.cloudstack.context.CallContext;
  import org.apache.cloudstack.reservation.ReservationVO;
  import org.apache.cloudstack.reservation.dao.ReservationDao;
  import org.junit.After;
  import org.junit.Assert;
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.mockito.Mock;
  import org.mockito.MockedStatic;
  import org.mockito.Mockito;
  import org.mockito.MockitoAnnotations;
  import org.mockito.junit.MockitoJUnitRunner;
  import org.mockito.stubbing.Answer;
  import org.springframework.test.util.ReflectionTestUtils;
  
  import com.cloud.configuration.Resource;
  import com.cloud.exception.ResourceAllocationException;
  import com.cloud.user.Account;
  import com.cloud.user.ResourceLimitService;
  import com.cloud.utils.db.GlobalLock;
  import com.cloud.utils.exception.CloudRuntimeException;
  
  @RunWith(MockitoJUnitRunner.class)
  public class CheckedReservationTest {
  
      @Mock
      Account account;
      @Mock
      ReservationDao reservationDao;
      @Mock
      ResourceLimitService resourceLimitService;
  
      @Mock
      ReservationVO reservation = new ReservationVO(1l, 1l, Resource.ResourceType.user_vm, 1l);
  
      @Mock
      GlobalLock quotaLimitLock;
  
      private AutoCloseable closeable;
      private MockedStatic<GlobalLock> globalLockMocked;
  
      @Before
      public void setup() throws Exception {
          closeable = MockitoAnnotations.openMocks(this);
          globalLockMocked = Mockito.mockStatic(GlobalLock.class);
          Mockito.when(quotaLimitLock.lock(Mockito.anyInt())).thenReturn(true);
          globalLockMocked.when(() -> GlobalLock.getInternLock(Mockito.anyString())).thenReturn(quotaLimitLock);
      }
  
      @After
      public void tearDown() throws Exception {
          globalLockMocked.close();
          closeable.close();
      }
  
      @Test
      public void getId() {
          when(account.getDomainId()).thenReturn(4l);
          // Some weird behaviour depending on whether the database is up or not.
          lenient().when(reservationDao.persist(Mockito.any())).thenReturn(reservation);
          lenient().when(reservation.getId()).thenReturn(1L);
          try (CheckedReservation cr = new CheckedReservation(account, Resource.ResourceType.user_vm,1l, reservationDao, resourceLimitService) ) {
              List<Long> ids = cr.getIds();
              assertEquals(1, cr.getIds().size());
              long id = ids.get(0);
              assertEquals(1L, id);
          } catch (NullPointerException npe) {
              fail("NPE caught");
          } catch (ResourceAllocationException rae) {
              // this does not work on all platforms because of the static methods being used in the global lock mechanism
              // normally one would
              // throw new CloudRuntimeException(rae);
              // but we'll ignore this for platforms that can not humour the static bits of the system.
          } catch (Exception e) {
              throw new RuntimeException(e);
          }
      }
  
      @Test
      public void getNoAmount() {
          Mockito.when(reservationDao.persist(Mockito.any())).thenReturn(reservation);
          try (CheckedReservation cr = new CheckedReservation(account, Resource.ResourceType.cpu,-11l, reservationDao, resourceLimitService) ) {
              Long amount = cr.getReservedAmount();
              assertEquals(Long.valueOf(-11L), amount);
          } catch (NullPointerException npe) {
              fail("NPE caught");
          } catch (ResourceAllocationException rae) {
              throw new CloudRuntimeException(rae);
          } catch (Exception e) {
              throw new RuntimeException(e);
          }
      }
  
      @Test
      public void testReservationPersistAndCallContextParam() {
          List<String> tags = List.of("abc", "xyz");
          when(account.getAccountId()).thenReturn(1L);
          when(account.getDomainId()).thenReturn(4L);
          List<ReservationVO> persistedReservations = new ArrayList<>();
          Mockito.when(reservationDao.persist(Mockito.any(ReservationVO.class))).thenAnswer((Answer<ReservationVO>) invocation -> {
              ReservationVO reservationVO = (ReservationVO) invocation.getArguments()[0];
              ReflectionTestUtils.setField(reservationVO, "id", (long) (persistedReservations.size() + 1));
              persistedReservations.add(reservationVO);
              return reservationVO;
          });
          Resource.ResourceType type = Resource.ResourceType.cpu;
          try (CheckedReservation cr = new CheckedReservation(account, type, tags, 2L, reservationDao, resourceLimitService);) {
              Assert.assertEquals(tags.size() + 1, persistedReservations.size()); // An extra for no tag
              Object obj = CallContext.current().getContextParameter(CheckedReservation.getResourceReservationContextParameterKey(type));
              Assert.assertTrue(obj instanceof List);
              List<Long> list = (List<Long>) obj;
              Assert.assertEquals(tags.size() + 1, list.size()); // An extra for no tag
          } catch (Exception e) {
              Assert.fail("Exception faced: " + e.getMessage());
          }
      }
  
      @Test
      public void testMultipleReservationsWithOneFailing() {
          List<String> tags = List.of("abc", "xyz");
          when(account.getAccountId()).thenReturn(1L);
          when(account.getDomainId()).thenReturn(4L);
          Map<Long, ReservationVO> persistedReservations = new HashMap<>();
          Mockito.when(reservationDao.persist(Mockito.any(ReservationVO.class))).thenAnswer((Answer<ReservationVO>) invocation -> {
              ReservationVO reservationVO = (ReservationVO) invocation.getArguments()[0];
              Long id = (long) (persistedReservations.size() + 1);
              ReflectionTestUtils.setField(reservationVO, "id", id);
              persistedReservations.put(id, reservationVO);
              return reservationVO;
          });
          Mockito.when(reservationDao.remove(Mockito.anyLong())).thenAnswer((Answer<Boolean>) invocation -> {
              Long id = (Long) invocation.getArguments()[0];
              persistedReservations.remove(id);
              return true;
          });
          try {
              Mockito.doThrow(ResourceAllocationException.class).when(resourceLimitService).checkResourceLimitWithTag(account, Resource.ResourceType.cpu, "xyz", 1L);
              try (CheckedReservation vmReservation = new CheckedReservation(account, Resource.ResourceType.user_vm, tags, 1L, reservationDao, resourceLimitService);
                   CheckedReservation cpuReservation = new CheckedReservation(account, Resource.ResourceType.cpu, tags, 1L, reservationDao, resourceLimitService);
                   CheckedReservation memReservation = new CheckedReservation(account, Resource.ResourceType.memory, tags, 256L, reservationDao, resourceLimitService);
              ) {
                  Assert.fail("Exception should have occurred but all reservations successful!");
              } catch (Exception ex) {
                  if (!(ex instanceof ResourceAllocationException)) {
                      Assert.fail(String.format("Expected ResourceAllocationException but %s occurred!", ex.getClass().getSimpleName()));
                  }
                  throw ex;
              }
          } catch (Exception rae) {
              // Check if all persisted reservations are removed
              Assert.assertTrue("All persisted reservations are not removed", persistedReservations.isEmpty());
          }
      }
  }
  