public void testEquals_self() {
    assertTrue("An Object should be equal to itself.", collection.equals(collection));
  }

  // Comparisons to null *are* defined.
  @SuppressWarnings("UndefinedEquals")
  public void testEquals_null() {
    // noinspection ObjectEqualsNull
    assertFalse("An object should not be equal to null.", collection.equals(null));
  }

  // A collection should essentially never be equal to a non-collection.

        when(smbFile.length()).thenReturn(-1L);
        assertFalse(filter.accept(smbFile), "Negative size should be rejected");
        verify(smbFile, times(1)).length();

        // zero size -> reject
        reset(smbFile);
        when(smbFile.length()).thenReturn(0L);
        assertFalse(filter.accept(smbFile), "Zero size should be rejected");
        verify(smbFile, times(1)).length();

        // positive size -> accept

    assertFalse(
        "setCount() with a too-large oldCount should return false",
        getMultiset().setCount(e0(), 2, 3));
    expectUnchanged();
  }

  @CollectionSize.Require(absent = ZERO)
  @CollectionFeature.Require(SUPPORTS_ADD)
  public void testSetCountConditional_oldCountTooSmallZero() {
    assertFalse(
        "setCount() with a too-small oldCount should return false",
        getMultiset().setCount(e0(), 0, 2));

        // With enforcement disabled, this should log a warning but not throw
        PreauthIntegrityService lenientService = new PreauthIntegrityService(secureRandom, PreauthIntegrityService.HASH_ALGO_SHA512, false);

        // Should not throw exception
        lenientService.updatePreauthHash("non-existent", "test".getBytes());

        // With enforcement enabled, should throw exception

            jcifs.internal.smb1.com.SmbComReadAndX req = cap.getValue();
            assertEquals(1024, req.getMinCount(), "Named pipe minCount should be 1024");
            assertEquals(1024, req.getMaxCount(), "Named pipe maxCount should be 1024");
            assertEquals(1024, req.getRemaining(), "Named pipe remaining should be 1024");
        }
    }

    @Nested
    @DisplayName("Lifecycle and exception mapping")

    assertFalse(
        "setCount() with a too-large oldCount should return false",
        getMultiset().setCount(e0(), 2, 3));
    expectUnchanged();
  }

  @CollectionSize.Require(absent = ZERO)
  @CollectionFeature.Require(SUPPORTS_ADD)
  public void testSetCountConditional_oldCountTooSmallZero() {
    assertFalse(
        "setCount() with a too-small oldCount should return false",
        getMultiset().setCount(e0(), 0, 2));

* There should be tests testing the source example.
* Before the PR is applied, the new tests should fail.
* After applying the PR, the new tests should pass.
* Coverage should stay at 100%.

        int attrs = SmbConstants.ATTR_NORMAL;

        // Act
        SmbFileHandleImpl result = SmbCopyUtil.openCopyTargetFile(dest, attrs, alsoRead);

        // Assert
        assertSame(handle, result, "Should return handle from dest.openUnshared");

        ArgumentCaptor<Integer> accessCaptor = ArgumentCaptor.forClass(Integer.class);

            } else if (input.equals("test3")) {
                foundTest3 = true;
            }
        }

        assertTrue("Should find tab item", foundTab);
        assertTrue("Should find newline item", foundNewline);
        assertTrue("Should find test3", foundTest3);
    }

    @Test
    public void test_update_fromInputStream() throws IOException {
        // Create test input stream

        byte[] result2 = hmac2.engineDigest();

        // Results should be different
        boolean different = false;
        for (int i = 0; i < result1.length; i++) {
            if (result1[i] != result2[i]) {
                different = true;
                break;
            }
        }
        assertEquals(true, different, "Different keys should produce different HMAC values");
    }

    @Test