}

    @Test
    void testReadDataWireFormatWithNegativeLength() {
        byte[] buffer = new byte[100];
        // Negative length should cause ArrayIndexOutOfBoundsException from System.arraycopy
        assertThrows(ArrayIndexOutOfBoundsException.class, () -> response.readDataWireFormat(buffer, 0, -1));
    }

var errNotFirstDisk = errors.New("Not first drive")

// error returned by first disk waiting to initialize other servers.
var errFirstDiskWait = errors.New("Waiting on other drives")

// error returned for a negative actual size.
var errInvalidDecompressedSize = errors.New("Invalid Decompressed Size")

// error returned in IAM subsystem when user doesn't exist.
var errNoSuchUser = errors.New("Specified user does not exist")

        // Assert: verify interaction and returned value
        verify(renewable, times(1)).renew();
        assertSame(returned, result, "renew() should return the stubbed value");

        // Negative interaction check: no further interactions with the mock
        verifyNoMoreInteractions(renewable);
    }

    @Test
    @DisplayName("Edge: calling renew() on a null reference throws NPE")

			input:    []int{1, 2, 3},
			trimLen:  1,
			expected: []int{1, 2},
		},
		{
			name:     "Empty slice",
			input:    []int{},
			trimLen:  2,
			expected: []int{},
		},
		{
			name:     "Negative trim length (should be treated as zero)",
			input:    []int{1, 2, 3},
			trimLen:  -1,
			expected: []int{1, 2, 3},
		},
	}

	for _, testcase := range tests {
		t.Run(testcase.name, func(t *testing.T) {

   * @throws IllegalArgumentException if {@code limitSize} is negative
   * @since 3.0
   */
  public static <T extends @Nullable Object> Iterator<T> limit(
      Iterator<T> iterator, int limitSize) {
    checkNotNull(iterator);
    checkArgument(limitSize >= 0, "limit is negative");
    return new Iterator<T>() {
      private int count;

      @Override

   * @throws IllegalArgumentException if {@code limitSize} is negative
   * @since 3.0
   */
  public static <T extends @Nullable Object> Iterable<T> limit(
      Iterable<T> iterable, int limitSize) {
    checkNotNull(iterable);
    checkArgument(limitSize >= 0, "limit is negative");
    return new FluentIterable<T>() {
      @Override
      public Iterator<T> iterator() {

      // Since index and (dataset.length - 1) are non-negative ints, their product can be expressed
      // as a long, without risk of overflow:
      long numerator = (long) index * (dataset.length - 1);
      // Since scale is a positive int, index is in [0, scale], and (dataset.length - 1) is a
      // non-negative int, we can do long-arithmetic on index * (dataset.length - 1) / scale to get

        // When assigned to a long field, it gets sign-extended
        int readLen = response.readParameterWordsWireFormat(bytes, 0);
        long expectedOffset = expectedInt; // Sign extension happens here for negative values
        assertEquals(expectedOffset, response.getOffset(), "Offset should match decoded value");
        assertEquals(4, readLen, "Byte count returned should be 4");
    }

    @Test

        // Service accessors
        assertEquals("cifs", auth.getService());
        auth.setService("");
        assertEquals("", auth.getService());

        // Lifetime accessors (edge: zero/negative)
        auth.setUserLifeTime(0);
        assertEquals(0, auth.getUserLifeTime());
        auth.setUserLifeTime(-1);
        assertEquals(-1, auth.getUserLifeTime());

        auth.setLifeTime(0);

 * This is either a mapping decision or the length of the mapped output, according to this table:
 *
 * ```
 *  0..63 : Length of the UTF-16 sequence that this range maps to. The offset is b2b3.
 * 64..79 : Offset by a fixed negative offset. The bottom 4 bits of b1 are the top 4 bits of the offset.
 * 80..95 : Offset by a fixed positive offset. The bottom 4 bits of b1 are the top 4 bits of the offset.
 *    119 : Ignored.
 *    120 : Valid.