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   1 /*
   2  * SonarQube
   3  * Copyright (C) 2009-2024 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.issue.notification;
  21
  22 import com.google.common.collect.ImmutableSet;
  23 import com.google.common.collect.ListMultimap;
  24 import com.tngtech.java.junit.dataprovider.DataProvider;
  25 import com.tngtech.java.junit.dataprovider.DataProviderRunner;
  26 import com.tngtech.java.junit.dataprovider.UseDataProvider;
  27 import java.util.Collections;
  28 import java.util.List;
  29 import java.util.Random;
  30 import java.util.Set;
  31 import java.util.stream.Collectors;
  32 import java.util.stream.IntStream;
  33 import java.util.stream.Stream;
  34 import javax.annotation.Nullable;
  35 import org.junit.Test;
  36 import org.junit.runner.RunWith;
  37 import org.mockito.ArgumentCaptor;
  38 import org.mockito.Mockito;
  39 import org.sonar.core.util.stream.MoreCollectors;
  40 import org.sonar.server.issue.notification.IssuesChangesNotificationBuilder.AnalysisChange;
  41 import org.sonar.server.issue.notification.IssuesChangesNotificationBuilder.Change;
  42 import org.sonar.server.issue.notification.IssuesChangesNotificationBuilder.ChangedIssue;
  43 import org.sonar.server.issue.notification.IssuesChangesNotificationBuilder.Project;
  44 import org.sonar.server.issue.notification.IssuesChangesNotificationBuilder.Rule;
  45 import org.sonar.server.issue.notification.IssuesChangesNotificationBuilder.User;
  46 import org.sonar.server.issue.notification.IssuesChangesNotificationBuilder.UserChange;
  47 import org.sonar.server.notification.NotificationDispatcherMetadata;
  48 import org.sonar.server.notification.NotificationManager;
  49 import org.sonar.server.notification.email.EmailNotificationChannel;
  50 import org.sonar.server.notification.email.EmailNotificationChannel.EmailDeliveryRequest;
  51
  52 import static java.util.stream.Collectors.toSet;
  53 import static org.apache.commons.lang3.RandomStringUtils.randomAlphabetic;
  54 import static org.assertj.core.api.Assertions.assertThat;
  55 import static org.mockito.ArgumentMatchers.anySet;
  56 import static org.mockito.Mockito.mock;
  57 import static org.mockito.Mockito.verify;
  58 import static org.mockito.Mockito.verifyNoInteractions;
  59 import static org.mockito.Mockito.verifyNoMoreInteractions;
  60 import static org.mockito.Mockito.when;
  61 import static org.sonar.core.util.stream.MoreCollectors.index;
  62 import static org.sonar.core.util.stream.MoreCollectors.unorderedIndex;
  63 import static org.sonar.server.issue.notification.IssuesChangesNotificationBuilderTesting.newRandomNotAHotspotRule;
  64 import static org.sonar.server.notification.NotificationDispatcherMetadata.GLOBAL_NOTIFICATION;
  65 import static org.sonar.server.notification.NotificationDispatcherMetadata.PER_PROJECT_NOTIFICATION;
  66 import static org.sonar.server.notification.NotificationManager.SubscriberPermissionsOnProject.ALL_MUST_HAVE_ROLE_USER;
  67
  68 @RunWith(DataProviderRunner.class)
  69 public class ChangesOnMyIssueNotificationHandlerTest {
  70   private static final String CHANGE_ON_MY_ISSUES_DISPATCHER_KEY = "ChangesOnMyIssue";
  71   private static final String NO_CHANGE_AUTHOR = null;
  72
  73   private NotificationManager notificationManager = mock(NotificationManager.class);
  74   private EmailNotificationChannel emailNotificationChannel = mock(EmailNotificationChannel.class);
  75   private IssuesChangesNotificationSerializer serializer = new IssuesChangesNotificationSerializer();
  76   private ChangesOnMyIssueNotificationHandler underTest = new ChangesOnMyIssueNotificationHandler(
  77     notificationManager, emailNotificationChannel, serializer);
  78
  79   private Class<Set<EmailDeliveryRequest>> emailDeliveryRequestSetType = (Class<Set<EmailDeliveryRequest>>) (Object) Set.class;
  80   private ArgumentCaptor<Set<EmailDeliveryRequest>> emailDeliveryRequestSetCaptor = ArgumentCaptor.forClass(emailDeliveryRequestSetType);
  81
  82   @Test
  83   public void getMetadata_returns_same_instance_as_static_method() {
  84     assertThat(underTest.getMetadata()).containsSame(ChangesOnMyIssueNotificationHandler.newMetadata());
  85   }
  86
  87   @Test
  88   public void verify_changeOnMyIssues_notification_dispatcher_key() {
  89     NotificationDispatcherMetadata metadata = ChangesOnMyIssueNotificationHandler.newMetadata();
  90
  91     assertThat(metadata.getDispatcherKey()).isEqualTo(CHANGE_ON_MY_ISSUES_DISPATCHER_KEY);
  92   }
  93
  94   @Test
  95   public void changeOnMyIssues_notification_is_enable_at_global_level() {
  96     NotificationDispatcherMetadata metadata = ChangesOnMyIssueNotificationHandler.newMetadata();
  97
  98     assertThat(metadata.getProperty(GLOBAL_NOTIFICATION)).isEqualTo("true");
  99   }
 100
 101   @Test
 102   public void changeOnMyIssues_notification_is_enable_at_project_level() {
 103     NotificationDispatcherMetadata metadata = ChangesOnMyIssueNotificationHandler.newMetadata();
 104
 105     assertThat(metadata.getProperty(PER_PROJECT_NOTIFICATION)).isEqualTo("true");
 106   }
 107
 108   @Test
 109   public void getNotificationClass_is_IssueChangeNotification() {
 110     assertThat(underTest.getNotificationClass()).isEqualTo(IssuesChangesNotification.class);
 111   }
 112
 113   @Test
 114   public void deliver_has_no_effect_if_notifications_is_empty() {
 115     when(emailNotificationChannel.isActivated()).thenReturn(true);
 116     int deliver = underTest.deliver(Collections.emptyList());
 117
 118     assertThat(deliver).isZero();
 119     verifyNoInteractions(notificationManager, emailNotificationChannel);
 120   }
 121
 122   @Test
 123   public void deliver_has_no_effect_if_emailNotificationChannel_is_disabled() {
 124     when(emailNotificationChannel.isActivated()).thenReturn(false);
 125     Set<IssuesChangesNotification> notifications = IntStream.range(0, 1 + new Random().nextInt(10))
 126       .mapToObj(i -> mock(IssuesChangesNotification.class))
 127       .collect(toSet());
 128
 129     int deliver = underTest.deliver(notifications);
 130
 131     assertThat(deliver).isZero();
 132     verifyNoInteractions(notificationManager);
 133     verify(emailNotificationChannel).isActivated();
 134     verifyNoMoreInteractions(emailNotificationChannel);
 135     notifications.forEach(Mockito::verifyNoInteractions);
 136   }
 137
 138   @Test
 139   public void deliver_has_no_effect_if_no_notification_has_assignee() {
 140     when(emailNotificationChannel.isActivated()).thenReturn(true);
 141     Set<ChangedIssue> issues = IntStream.range(0, 1 + new Random().nextInt(2))
 142       .mapToObj(i -> new ChangedIssue.Builder("issue_key_" + i)
 143         .setNewStatus("foo")
 144         .setAssignee(null)
 145         .setRule(newRule())
 146         .setProject(newProject(i + ""))
 147         .build())
 148       .collect(toSet());
 149     IssuesChangesNotificationBuilder builder = new IssuesChangesNotificationBuilder(issues, new UserChange(new Random().nextLong(), new User("user_uuid", "user_login", null)));
 150
 151     int deliver = underTest.deliver(ImmutableSet.of(serializer.serialize(builder)));
 152
 153     assertThat(deliver).isZero();
 154     verifyNoInteractions(notificationManager);
 155     verify(emailNotificationChannel).isActivated();
 156     verifyNoMoreInteractions(emailNotificationChannel);
 157   }
 158
 159   @Test
 160   public void deliver_has_no_effect_if_all_issues_are_assigned_to_the_changeAuthor() {
 161     when(emailNotificationChannel.isActivated()).thenReturn(true);
 162     Set<UserChange> userChanges = IntStream.range(0, 1 + new Random().nextInt(3))
 163       .mapToObj(i -> new UserChange(new Random().nextLong(), new User("user_uuid_" + i, "user_login_" + i, null)))
 164       .collect(toSet());
 165     Set<IssuesChangesNotificationBuilder> notificationBuilders = userChanges.stream()
 166       .map(userChange -> {
 167         Set<ChangedIssue> issues = IntStream.range(0, 1 + new Random().nextInt(2))
 168           .mapToObj(i -> new ChangedIssue.Builder("issue_key_" + i + userChange.getUser().getUuid())
 169             .setNewStatus("foo")
 170             .setAssignee(userChange.getUser())
 171             .setRule(newRule())
 172             .setProject(newProject(i + ""))
 173             .build())
 174           .collect(toSet());
 175         return new IssuesChangesNotificationBuilder(issues, userChange);
 176       })
 177       .collect(toSet());
 178     Set<IssuesChangesNotification> notifications = notificationBuilders.stream()
 179       .map(t -> serializer.serialize(t))
 180       .collect(toSet());
 181
 182     int deliver = underTest.deliver(notifications);
 183
 184     assertThat(deliver).isZero();
 185     verifyNoInteractions(notificationManager);
 186     verify(emailNotificationChannel).isActivated();
 187     verifyNoMoreInteractions(emailNotificationChannel);
 188   }
 189
 190   @Test
 191   public void deliver_checks_by_projectKey_if_notifications_have_subscribed_assignee_to_ChangesOnMyIssues_notifications() {
 192     when(emailNotificationChannel.isActivated()).thenReturn(true);
 193     Project project = newProject();
 194     Set<ChangedIssue> issues = IntStream.range(0, 1 + new Random().nextInt(2))
 195       .mapToObj(i -> new ChangedIssue.Builder("issue_key_" + i)
 196         .setNewStatus("foo")
 197         .setAssignee(newUser("assignee_" + i))
 198         .setRule(newRule())
 199         .setProject(project)
 200         .build())
 201       .collect(toSet());
 202     IssuesChangesNotificationBuilder builder = new IssuesChangesNotificationBuilder(issues, new UserChange(new Random().nextLong(), new User("user_uuid", "user_login", null)));
 203
 204     int deliver = underTest.deliver(ImmutableSet.of(serializer.serialize(builder)));
 205
 206     assertThat(deliver).isZero();
 207     Set<String> assigneeLogins = issues.stream().map(i -> i.getAssignee().get().getLogin()).collect(toSet());
 208     verify(notificationManager).findSubscribedEmailRecipients(CHANGE_ON_MY_ISSUES_DISPATCHER_KEY, project.getKey(), assigneeLogins, ALL_MUST_HAVE_ROLE_USER);
 209     verifyNoMoreInteractions(notificationManager);
 210     verify(emailNotificationChannel).isActivated();
 211     verifyNoMoreInteractions(emailNotificationChannel);
 212   }
 213
 214   @Test
 215   public void deliver_checks_by_projectKeys_if_notifications_have_subscribed_assignee_to_ChangesOnMyIssues_notifications() {
 216     when(emailNotificationChannel.isActivated()).thenReturn(true);
 217     Set<ChangedIssue> issues = IntStream.range(0, 1 + new Random().nextInt(2))
 218       .mapToObj(i -> new ChangedIssue.Builder("issue_key_" + i)
 219         .setNewStatus("foo")
 220         .setAssignee(newUser("" + i))
 221         .setRule(newRule())
 222         .setProject(newProject(i + ""))
 223         .build())
 224       .collect(toSet());
 225     IssuesChangesNotificationBuilder builder = new IssuesChangesNotificationBuilder(issues, new UserChange(new Random().nextLong(), new User("user_uuid", "user_login", null)));
 226
 227     int deliver = underTest.deliver(ImmutableSet.of(serializer.serialize(builder)));
 228
 229     assertThat(deliver).isZero();
 230     issues.stream()
 231       .collect(MoreCollectors.index(ChangedIssue::getProject))
 232       .asMap()
 233       .forEach((key, value) -> {
 234         String projectKey = key.getKey();
 235         Set<String> assigneeLogins = value.stream().map(i -> i.getAssignee().get().getLogin()).collect(toSet());
 236         verify(notificationManager).findSubscribedEmailRecipients(CHANGE_ON_MY_ISSUES_DISPATCHER_KEY, projectKey, assigneeLogins, ALL_MUST_HAVE_ROLE_USER);
 237       });
 238     verifyNoMoreInteractions(notificationManager);
 239     verify(emailNotificationChannel).isActivated();
 240     verifyNoMoreInteractions(emailNotificationChannel);
 241   }
 242
 243   @Test
 244   @UseDataProvider("userOrAnalysisChange")
 245   public void deliver_creates_a_notification_per_assignee_with_only_his_issues_on_the_single_project(Change userOrAnalysisChange) {
 246     when(emailNotificationChannel.isActivated()).thenReturn(true);
 247     Project project = newProject();
 248     User assignee1 = newUser("assignee_1");
 249     User assignee2 = newUser("assignee_2");
 250     Set<ChangedIssue> assignee1Issues = IntStream.range(0, 10)
 251       .mapToObj(i -> newChangedIssue("1_issue_key_" + i, assignee1, project))
 252       .collect(toSet());
 253     Set<ChangedIssue> assignee2Issues = IntStream.range(0, 10)
 254       .mapToObj(i -> newChangedIssue("2_issue_key_" + i, assignee2, project))
 255       .collect(toSet());
 256     Set<IssuesChangesNotification> notifications = Stream.of(
 257       // notification with only assignee1 5 notifications
 258       new IssuesChangesNotificationBuilder(assignee1Issues.stream().limit(5).collect(toSet()), userOrAnalysisChange),
 259       // notification with only assignee2 6 notifications
 260       new IssuesChangesNotificationBuilder(assignee2Issues.stream().limit(6).collect(toSet()), userOrAnalysisChange),
 261       // notification with 4 assignee1 and 3 assignee2 notifications
 262       new IssuesChangesNotificationBuilder(
 263         Stream.concat(assignee1Issues.stream().skip(6), assignee2Issues.stream().skip(7)).collect(toSet()),
 264         userOrAnalysisChange))
 265       .map(t -> serializer.serialize(t))
 266       .collect(toSet());
 267     when(notificationManager.findSubscribedEmailRecipients(CHANGE_ON_MY_ISSUES_DISPATCHER_KEY, project.getKey(), ImmutableSet.of(assignee1.getLogin(), assignee2.getLogin()),
 268       ALL_MUST_HAVE_ROLE_USER))
 269         .thenReturn(ImmutableSet.of(emailRecipientOf(assignee1.getLogin()), emailRecipientOf(assignee2.getLogin())));
 270     int deliveredCount = new Random().nextInt(100);
 271     when(emailNotificationChannel.deliverAll(anySet())).thenReturn(deliveredCount);
 272
 273     int deliver = underTest.deliver(notifications);
 274
 275     assertThat(deliver).isEqualTo(deliveredCount);
 276     verify(notificationManager).findSubscribedEmailRecipients(CHANGE_ON_MY_ISSUES_DISPATCHER_KEY,
 277       project.getKey(), ImmutableSet.of(assignee1.getLogin(), assignee2.getLogin()), ALL_MUST_HAVE_ROLE_USER);
 278     verifyNoMoreInteractions(notificationManager);
 279     verify(emailNotificationChannel).isActivated();
 280     verify(emailNotificationChannel).deliverAll(emailDeliveryRequestSetCaptor.capture());
 281     verifyNoMoreInteractions(emailNotificationChannel);
 282
 283     Set<EmailDeliveryRequest> emailDeliveryRequests = emailDeliveryRequestSetCaptor.getValue();
 284     assertThat(emailDeliveryRequests).hasSize(4);
 285     ListMultimap<String, EmailDeliveryRequest> emailDeliveryRequestByEmail = emailDeliveryRequests.stream()
 286       .collect(index(EmailDeliveryRequest::recipientEmail));
 287     List<EmailDeliveryRequest> assignee1Requests = emailDeliveryRequestByEmail.get(emailOf(assignee1.getLogin()));
 288     assertThat(assignee1Requests)
 289       .hasSize(2)
 290       .extracting(t -> (ChangesOnMyIssuesNotification) t.notification())
 291       .extracting(ChangesOnMyIssuesNotification::getChange)
 292       .containsOnly(userOrAnalysisChange);
 293     assertThat(assignee1Requests)
 294       .extracting(t -> (ChangesOnMyIssuesNotification) t.notification())
 295       .extracting(ChangesOnMyIssuesNotification::getChangedIssues)
 296       .containsOnly(
 297         assignee1Issues.stream().limit(5).collect(unorderedIndex(t -> project, t -> t)),
 298         assignee1Issues.stream().skip(6).collect(unorderedIndex(t -> project, t -> t)));
 299
 300     List<EmailDeliveryRequest> assignee2Requests = emailDeliveryRequestByEmail.get(emailOf(assignee2.getLogin()));
 301     assertThat(assignee2Requests)
 302       .hasSize(2)
 303       .extracting(t -> (ChangesOnMyIssuesNotification) t.notification())
 304       .extracting(ChangesOnMyIssuesNotification::getChange)
 305       .containsOnly(userOrAnalysisChange);
 306     assertThat(assignee2Requests)
 307       .extracting(t -> (ChangesOnMyIssuesNotification) t.notification())
 308       .extracting(ChangesOnMyIssuesNotification::getChangedIssues)
 309       .containsOnly(
 310         assignee2Issues.stream().limit(6).collect(unorderedIndex(t -> project, t -> t)),
 311         assignee2Issues.stream().skip(7).collect(unorderedIndex(t -> project, t -> t)));
 312   }
 313
 314   @Test
 315   @UseDataProvider("userOrAnalysisChange")
 316   public void deliver_ignores_issues_which_assignee_is_the_changeAuthor(Change userOrAnalysisChange) {
 317     when(emailNotificationChannel.isActivated()).thenReturn(true);
 318     Project project1 = newProject();
 319     Project project2 = newProject();
 320     User assignee1 = newUser("assignee_1");
 321     User assignee2 = newUser("assignee_2");
 322     Set<ChangedIssue> assignee1Issues = IntStream.range(0, 10)
 323       .mapToObj(i -> newChangedIssue("1_issue_key_" + i, assignee1, project1))
 324       .collect(toSet());
 325     Set<ChangedIssue> assignee2Issues = IntStream.range(0, 10)
 326       .mapToObj(i -> newChangedIssue("2_issue_key_" + i, assignee2, project2))
 327       .collect(toSet());
 328
 329     UserChange assignee2Change1 = new UserChange(new Random().nextLong(), assignee2);
 330     Set<IssuesChangesNotification> notifications = Stream.of(
 331       // notification from assignee1 with issues from assignee1 only
 332       new IssuesChangesNotificationBuilder(
 333         assignee1Issues.stream().limit(4).collect(toSet()),
 334         new UserChange(new Random().nextLong(), assignee1)),
 335       // notification from assignee2 with issues from assignee1 and assignee2
 336       new IssuesChangesNotificationBuilder(
 337         Stream.concat(
 338           assignee1Issues.stream().skip(4).limit(2),
 339           assignee2Issues.stream().limit(4))
 340           .collect(toSet()),
 341         assignee2Change1),
 342       // notification from assignee2 with issues from assignee2 only
 343       new IssuesChangesNotificationBuilder(
 344         assignee2Issues.stream().skip(4).limit(3).collect(toSet()),
 345         new UserChange(new Random().nextLong(), assignee2)),
 346       // notification from other change with issues from assignee1 and assignee2)
 347       new IssuesChangesNotificationBuilder(
 348         Stream.concat(
 349           assignee1Issues.stream().skip(6),
 350           assignee2Issues.stream().skip(7))
 351           .collect(toSet()),
 352         userOrAnalysisChange))
 353       .map(t -> serializer.serialize(t))
 354       .collect(toSet());
 355     when(notificationManager.findSubscribedEmailRecipients(
 356       CHANGE_ON_MY_ISSUES_DISPATCHER_KEY, project1.getKey(), ImmutableSet.of(assignee1.getLogin()), ALL_MUST_HAVE_ROLE_USER))
 357         .thenReturn(ImmutableSet.of(emailRecipientOf(assignee1.getLogin())));
 358     when(notificationManager.findSubscribedEmailRecipients(
 359       CHANGE_ON_MY_ISSUES_DISPATCHER_KEY, project2.getKey(), ImmutableSet.of(assignee2.getLogin()), ALL_MUST_HAVE_ROLE_USER))
 360         .thenReturn(ImmutableSet.of(emailRecipientOf(assignee2.getLogin())));
 361     int deliveredCount = new Random().nextInt(100);
 362     when(emailNotificationChannel.deliverAll(anySet())).thenReturn(deliveredCount);
 363
 364     int deliver = underTest.deliver(notifications);
 365
 366     assertThat(deliver).isEqualTo(deliveredCount);
 367     verify(notificationManager).findSubscribedEmailRecipients(CHANGE_ON_MY_ISSUES_DISPATCHER_KEY,
 368       project1.getKey(), ImmutableSet.of(assignee1.getLogin()), ALL_MUST_HAVE_ROLE_USER);
 369     verify(notificationManager).findSubscribedEmailRecipients(CHANGE_ON_MY_ISSUES_DISPATCHER_KEY,
 370       project2.getKey(), ImmutableSet.of(assignee2.getLogin()), ALL_MUST_HAVE_ROLE_USER);
 371     verifyNoMoreInteractions(notificationManager);
 372     verify(emailNotificationChannel).isActivated();
 373     verify(emailNotificationChannel).deliverAll(emailDeliveryRequestSetCaptor.capture());
 374     verifyNoMoreInteractions(emailNotificationChannel);
 375
 376     Set<EmailDeliveryRequest> emailDeliveryRequests = emailDeliveryRequestSetCaptor.getValue();
 377     assertThat(emailDeliveryRequests).hasSize(3);
 378     ListMultimap<String, EmailDeliveryRequest> emailDeliveryRequestByEmail = emailDeliveryRequests.stream()
 379       .collect(index(EmailDeliveryRequest::recipientEmail));
 380     List<EmailDeliveryRequest> assignee1Requests = emailDeliveryRequestByEmail.get(emailOf(assignee1.getLogin()));
 381     assertThat(assignee1Requests)
 382       .hasSize(2)
 383       .extracting(t -> (ChangesOnMyIssuesNotification) t.notification())
 384       .extracting(ChangesOnMyIssuesNotification::getChange)
 385       .containsOnly(userOrAnalysisChange, assignee2Change1);
 386     assertThat(assignee1Requests)
 387       .extracting(t -> (ChangesOnMyIssuesNotification) t.notification())
 388       .extracting(ChangesOnMyIssuesNotification::getChangedIssues)
 389       .containsOnly(
 390         assignee1Issues.stream().skip(4).limit(2).collect(unorderedIndex(t -> project1, t -> t)),
 391         assignee1Issues.stream().skip(6).collect(unorderedIndex(t -> project1, t -> t)));
 392
 393     List<EmailDeliveryRequest> assignee2Requests = emailDeliveryRequestByEmail.get(emailOf(assignee2.getLogin()));
 394     assertThat(assignee2Requests)
 395       .hasSize(1)
 396       .extracting(t -> (ChangesOnMyIssuesNotification) t.notification())
 397       .extracting(ChangesOnMyIssuesNotification::getChange)
 398       .containsOnly(userOrAnalysisChange);
 399     assertThat(assignee2Requests)
 400       .extracting(t -> (ChangesOnMyIssuesNotification) t.notification())
 401       .extracting(ChangesOnMyIssuesNotification::getChangedIssues)
 402       .containsOnly(assignee2Issues.stream().skip(7).collect(unorderedIndex(t -> project2, t -> t)));
 403   }
 404
 405   @DataProvider
 406   public static Object[][] userOrAnalysisChange() {
 407     User changeAuthor = new User(randomAlphabetic(12), randomAlphabetic(10), randomAlphabetic(11));
 408     return new Object[][] {
 409       {new AnalysisChange(new Random().nextLong())},
 410       {new UserChange(new Random().nextLong(), changeAuthor)},
 411     };
 412   }
 413
 414   private static Project newProject() {
 415     String base = randomAlphabetic(6);
 416     return newProject(base);
 417   }
 418
 419   private static Project newProject(String base) {
 420     return new Project.Builder("prj_uuid_" + base)
 421       .setKey("prj_key_" + base)
 422       .setProjectName("prj_name_" + base)
 423       .build();
 424   }
 425
 426   private static User newUser(String name) {
 427     return new User(name + "_uuid", name + "login", name);
 428   }
 429
 430   private static ChangedIssue newChangedIssue(String key, User assignee1, Project project) {
 431     return new ChangedIssue.Builder(key)
 432       .setNewStatus("foo")
 433       .setAssignee(assignee1)
 434       .setRule(newRule())
 435       .setProject(project)
 436       .build();
 437   }
 438
 439   private static Rule newRule() {
 440     return newRandomNotAHotspotRule(randomAlphabetic(5));
 441   }
 442
 443   private static Set<IssuesChangesNotification> randomSetOfNotifications(@Nullable String projectKey, @Nullable String assignee, @Nullable String changeAuthor) {
 444     return IntStream.range(0, 1 + new Random().nextInt(5))
 445       .mapToObj(i -> newNotification(projectKey, assignee, changeAuthor))
 446       .collect(Collectors.toSet());
 447   }
 448
 449   private static IssuesChangesNotification newNotification(@Nullable String projectKey, @Nullable String assignee, @Nullable String changeAuthor) {
 450     return mock(IssuesChangesNotification.class);
 451   }
 452
 453   private static NotificationManager.EmailRecipient emailRecipientOf(String login) {
 454     return new NotificationManager.EmailRecipient(login, emailOf(login));
 455   }
 456
 457   private static String emailOf(String login) {
 458     return login + "@plouf";
 459   }
 460
 461 }