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   1 /*
   2  * SonarQube
   3  * Copyright (C) 2009-2022 SonarSource SA
   4  * mailto:info AT sonarsource DOT com
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 3 of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  19  */
  20 package org.sonar.server.platform.db.migration.step;
  21
  22 import java.util.Random;
  23 import org.junit.Test;
  24 import org.mockito.InOrder;
  25 import org.sonar.server.platform.db.migration.version.DbVersion;
  26
  27 import static org.assertj.core.api.Assertions.assertThat;
  28 import static org.assertj.core.api.Assertions.assertThatThrownBy;
  29 import static org.mockito.ArgumentMatchers.any;
  30 import static org.mockito.Mockito.doNothing;
  31 import static org.mockito.Mockito.inOrder;
  32 import static org.mockito.Mockito.mock;
  33 import static org.mockito.Mockito.verifyZeroInteractions;
  34 import static org.mockito.Mockito.when;
  35
  36 public class MigrationStepsProviderTest {
  37
  38   private InternalMigrationStepRegistry internalMigrationStepRegistry = mock(InternalMigrationStepRegistry.class);
  39   private MigrationStepsProvider underTest = new MigrationStepsProvider();
  40
  41   @Test
  42   public void provide_throws_ISE_with_registry_build_throws_ISE_because_it_is_empty() {
  43     IllegalStateException expected = new IllegalStateException("faking ISE because registry is empty");
  44     when(internalMigrationStepRegistry.build()).thenThrow(expected);
  45
  46     assertThatThrownBy(() -> underTest.provide(internalMigrationStepRegistry))
  47       .isInstanceOf(expected.getClass())
  48       .hasMessage(expected.getMessage());
  49   }
  50
  51   @Test
  52   public void provide_calls_DbVersion_addStep_in_order_and_only_once() {
  53     DbVersion dbVersion1 = newMockFailingOnSecondBuildCall();
  54     DbVersion dbVersion2 = newMockFailingOnSecondBuildCall();
  55     DbVersion dbVersion3 = newMockFailingOnSecondBuildCall();
  56     InOrder inOrder = inOrder(dbVersion1, dbVersion2, dbVersion3);
  57     MigrationSteps expected = mock(MigrationSteps.class);
  58     when(internalMigrationStepRegistry.build()).thenReturn(expected);
  59
  60     assertThat(underTest.provide(internalMigrationStepRegistry, dbVersion1, dbVersion2, dbVersion3))
  61       .isSameAs(expected);
  62
  63     inOrder.verify(dbVersion1).addSteps(internalMigrationStepRegistry);
  64     inOrder.verify(dbVersion2).addSteps(internalMigrationStepRegistry);
  65     inOrder.verify(dbVersion3).addSteps(internalMigrationStepRegistry);
  66     inOrder.verifyNoMoreInteractions();
  67
  68     // calling a second time with another argument, it's just ignored
  69     DbVersion dbVersion4 = newMockFailingOnSecondBuildCall();
  70     assertThat(underTest.provide(internalMigrationStepRegistry, dbVersion4)).isSameAs(expected);
  71     verifyZeroInteractions(dbVersion4);
  72   }
  73
  74   @Test
  75   public void provide_always_returns_the_same_MigrationSteps_instance_and_calls_registry_build_only_once() {
  76     MigrationSteps migrationSteps = mock(MigrationSteps.class);
  77     when(internalMigrationStepRegistry.build())
  78       .thenReturn(migrationSteps)
  79       .thenThrow(new RuntimeException("method build should not be called twice"));
  80
  81     for (int i = 0; i < Math.abs(new Random().nextInt(50)) + 1; i++) {
  82       assertThat(underTest.provide(internalMigrationStepRegistry)).isSameAs(migrationSteps);
  83     }
  84
  85   }
  86
  87   private static DbVersion newMockFailingOnSecondBuildCall() {
  88     DbVersion res = mock(DbVersion.class);
  89     doNothing()
  90       .doThrow(new RuntimeException("addStep should not be called twice"))
  91       .when(res)
  92       .addSteps(any(MigrationStepRegistry.class));
  93     return res;
  94   }
  95 }