Set<E> other = MinimalSet.from(elements);

    assertFalse(
        "Two Sets should not be equal if exactly one of them contains null.",
        getSet().equals(other));
  }

  @CollectionSize.Require(absent = CollectionSize.ZERO)
  public void testEquals_smallerSet() {
    Collection<E> fewerElements = getSampleElements(getNumElements() - 1);
    assertFalse(
        "Sets of different sizes should not be equal.",

    Set<E> other = MinimalSet.from(elements);

    assertFalse(
        "Two Sets should not be equal if exactly one of them contains null.",
        getSet().equals(other));
  }

  @CollectionSize.Require(absent = CollectionSize.ZERO)
  public void testEquals_smallerSet() {
    Collection<E> fewerElements = getSampleElements(getNumElements() - 1);
    assertFalse(
        "Sets of different sizes should not be equal.",

        // Act & Assert: test with different file names
        assertTrue(filter.accept(mockDir, "document.txt"), "Should accept .txt files in the correct path");
        assertFalse(filter.accept(mockDir, "image.png"), "Should reject non-.txt files");
        assertFalse(filter.accept(mockDir, null), "Should reject null names");

        // Verify getPath was called three times (once for each accept call)

package jcifs.smb1.smb1;

import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

    assertFalse(Strings.validSurrogatePairAt("\uD8AB\uD8AB", 0));
    assertFalse(Strings.validSurrogatePairAt("\uDCAB\uDCAB", 0));
    assertFalse(Strings.validSurrogatePairAt("\uD8AB\uDCAB", -1));
    assertFalse(Strings.validSurrogatePairAt("\uD8AB\uDCAB", 1));
    assertFalse(Strings.validSurrogatePairAt("\uD8AB\uDCAB", -2));
    assertFalse(Strings.validSurrogatePairAt("\uD8AB\uDCAB", 2));

    ExecutorService executor = newFixedThreadPool(1);
    requestInterruptIn(500);
    executor.execute(new SleepTask(10000));
    executor.shutdown();
    assertFalse(awaitTerminationUninterruptibly(executor, Duration.ofSeconds(1)));
    assertFalse(executor.isTerminated());
    assertInterrupted();
  }

  public void testTryAwaitTerminationUninterruptiblyLongTimeUnit_success() {

        LeaseEntry noneEntry = leaseManager.getLease(noneKey);

        assertFalse(noneEntry.hasReadCache());
        assertFalse(noneEntry.hasWriteCache());
        assertFalse(noneEntry.hasHandleCache());
    }

    @Test
    @DisplayName("Should handle lease break with timeout")
    void testHandleLeaseBreakWithTimeout() {
        String path = "/share/timeout.txt";

    int oldSize = getNumElements();

    Collection<V> result = multimap().asMap().get(k0());
    assertTrue(result.remove(v0()));

    assertFalse(multimap().containsKey(k0()));
    assertFalse(multimap().containsEntry(k0(), v0()));
    assertEmpty(result);

    assertTrue(result.add(v1()));
    assertTrue(result.add(v2()));

    assertContentsAnyOrder(result, v1(), v2());

    try {
      assertFalse(
          "remove(null) should return false or throw NullPointerException",
          collection.remove(null));
    } catch (NullPointerException tolerated) {
    }
    expectUnchanged();
  }

  @CollectionFeature.Require({SUPPORTS_REMOVE, ALLOWS_NULL_QUERIES})
  public void testRemove_nullAllowed() {

    assertTrue(multimap.containsKey("foo"));
    assertFalse(multimap.containsKey("cat"));
    assertTrue(multimap.containsValue(1));
    assertFalse(multimap.containsValue(5));
    assertTrue(multimap.containsEntry("foo", 1));
    assertFalse(multimap.containsEntry("cat", 1));
    assertFalse(multimap.containsEntry("foo", 5));
    assertFalse(multimap.entries().isEmpty());
    assertEquals(3, multimap.size());