}

  @CollectionFeature.Require(SUPPORTS_ADD)
  public void testAddAll_nonEmptyList() {
    assertTrue(getMultiset().addAll(asList(e3(), e4(), e3())));
    expectAdded(e3(), e4(), e3());
  }

  @CollectionFeature.Require(SUPPORTS_ADD)
  public void testAddAll_nonEmptyMultiset() {
    assertTrue(getMultiset().addAll(getSubjectGenerator().create(e3(), e4(), e3())));
    expectAdded(e3(), e4(), e3());
  }

  public void testRemoveIf_sometimesTrue() {
    assertTrue(
        "removeIf(isEqual(present)) should return true",
        collection.removeIf(Predicate.isEqual(samples.e0())));
    expectMissing(samples.e0());
  }

  @CollectionFeature.Require(SUPPORTS_ITERATOR_REMOVE)
  @CollectionSize.Require(absent = ZERO)
  public void testRemoveIf_allPresent() {

        }

        fun assertHasNoError() {
            assertTrue("Has no error (${richReport.errors})", richReport.errors.isEmpty())
        }

        fun assertHasNoWarning() {
            assertTrue("Has no warning (${richReport.warnings})", richReport.warnings.isEmpty())
        }

        fun assertHasNoInformation() {

                throw new AssertionError("Should not have been invoked again");
            }
          }
        };

    assertTrue(iter.hasNext());
    assertEquals(0, (int) iter.next());

    // verify idempotence of hasNext()
    assertTrue(iter.hasNext());
    assertTrue(iter.hasNext());
    assertTrue(iter.hasNext());
    assertEquals(1, (int) iter.next());

    assertFalse(iter.hasNext());

        phaseRecorder.observeExecution(mojoExecution1);

        assertTrue(ProjectDependencyGraphStub.A.hasLifecyclePhase(mojoExecution1.getLifecyclePhase()));
        assertFalse(ProjectDependencyGraphStub.A.hasLifecyclePhase(mojoExecution2.getLifecyclePhase()));

        assertFalse(phaseRecorder.isDifferentPhase(mojoExecution1));
        assertTrue(phaseRecorder.isDifferentPhase(mojoExecution2));
    }

            // Verify both POMs exist (they may or may not be modified depending on strategies)
            assertTrue(Files.exists(parentPom), "Parent POM should exist");
            assertTrue(Files.exists(modulePom), "Module POM should exist");
        }
    }

    @Nested
    @DisplayName("Error Handling")
    class ErrorHandlingTests {

        @Test

    assertFalse(elementSet.contains(e3()));
    getMultiset().add(e3(), 4);
    assertTrue(elementSet.contains(e3()));
  }

  @CollectionSize.Require(absent = ZERO)
  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testElementSetReflectsRemove() {
    Set<E> elementSet = getMultiset().elementSet();
    assertTrue(elementSet.contains(e0()));
    getMultiset().removeAll(singleton(e0()));

import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertSame;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

/**
 * UT for {@link ReverseTreeRepositoryListener}.
 */
class ReverseTreeRepositoryListenerTest {
    @Test

  }

  public void testAccept() {
    File dir = new File("foo");
    FilenameFilter filter = new PatternFilenameFilter("a+");
    assertTrue(filter.accept(dir, "a"));
    assertTrue(filter.accept(dir, "aaaa"));
    assertFalse(filter.accept(dir, "b"));

    // Show that dir is ignored
    assertTrue(filter.accept(null, "a"));
  }

  public void testNulls() throws Exception {
    NullPointerTester tester = new NullPointerTester();

  public void testAsMapValuesImplementSet() {
    for (Collection<V> valueCollection : multimap().asMap().values()) {
      assertTrue(valueCollection instanceof Set);
    }
  }

  public void testAsMapGetImplementsSet() {
    for (K key : multimap().keySet()) {
      assertTrue(multimap().asMap().get(key) instanceof Set);
    }
  }

  @MapFeature.Require(SUPPORTS_REMOVE)