package com.atlassian.plugin.event;
   
   import org.junit.Test;
   
   import java.util.ArrayList;
   import java.util.List;
   
   import static org.junit.Assert.assertEquals;
   
  /**
   * @since 2.3.0
   */
  @SuppressWarnings({"ThrowableResultOfMethodCallIgnored", "ThrowableInstanceNeverThrown"})
  public class TestNotificationException {
  
      @Test
      public void testSingletonConstructor() {
          Exception cause = new Exception("I don't like it");
          NotificationException notificationException = new NotificationException(cause);
  
          assertEquals(cause, notificationException.getCause());
          assertEquals(1, notificationException.getAllCauses().size());
          assertEquals(cause, notificationException.getAllCauses().get(0));
      }
  
      @Test
      public void testListConstructor() {
          Exception cause1 = new Exception("I don't like it");
          Exception cause2 = new Exception("Me neither");
          final List<Throwable> causes = new ArrayList<>();
          causes.add(cause1);
          causes.add(cause2);
  
          NotificationException notificationException = new NotificationException(causes);
  
          assertEquals(cause1, notificationException.getCause());
          assertEquals(2, notificationException.getAllCauses().size());
          assertEquals(cause1, notificationException.getAllCauses().get(0));
          assertEquals(cause2, notificationException.getAllCauses().get(1));
      }
  
      @Test(expected = NullPointerException.class)
      public void testListConstructorThrowsForNullCauses() {
          new NotificationException((List) null);
      }
  
      @Test(expected = IndexOutOfBoundsException.class)
      public void testListConstructorForEmptyCauses() {
          new NotificationException(new ArrayList<>());
      }
  }