public void testNewArrayListWithCapacity() {
    ArrayList<Integer> list = Lists.newArrayListWithCapacity(0);
    assertEquals(emptyList(), list);

    ArrayList<Integer> bigger = Lists.newArrayListWithCapacity(256);
    assertEquals(emptyList(), bigger);
  }

  public void testNewArrayListWithCapacity_negative() {
    assertThrows(IllegalArgumentException.class, () -> Lists.newArrayListWithCapacity(-1));
  }

        verify(tc, never()).getConfig();
        verifyNoInteractions(config);
    }

    @Test
    @DisplayName("createContext: Kerberos present but forceFallback triggers NTLM path")
    void createContext_forceFallback_triggersNtlmAndFailsOnNonNtlmToken() throws CIFSException {
        when(tc.getConfig()).thenReturn(config);
        when(config.isAllowNTLMFallback()).thenReturn(true);

* fix a bug where disk pressure could trigger prematurely when using overlay2 ([#53684](https://github.com/kubernetes/kubernetes/pull/53684), [@dashpole](https://github.com/dashpole))

    void renewOnNullReferenceThrowsNPE() {
        // Arrange: null reference to the interface
        SmbRenewableCredentials creds = null;

        // Act + Assert: invoking renew() on null triggers NullPointerException
        assertThrows(NullPointerException.class, () -> {
            // Intentional NPE through dereference of a null interface reference
            creds.renew();
        });
    }

    }

    @Test
    @DisplayName("parseURL: exact 'smb://' sets default port")
    void testParseURL_ExactRoot_DefaultPort() throws MalformedURLException {
        // Arrange & Act: constructing this URL triggers Handler.parseURL("smb://")
        Handler handler = newHandler();
        URL url = new URL(null, "smb://", handler);

        // Assert
        assertEquals("smb", url.getProtocol());

  }

  // A random value that cannot be 0 and that is unsigned-less-than or equal
  // to the given dividend, so that we don't have half of our divisions being
  // trivial because the divisor is bigger than the dividend.
  // Using remainder here does not give us a uniform distribution but it should
  // not have a big impact on the measurement.
  private static long randomDivisor(long dividend) {

                    return buf;
                }, IllegalArgumentException.class),

                // Negative NAME_LEN (0xFFFFFFFF) causes StringIndexOutOfBoundsException
                Arguments.of("negative name length triggers SIOOBE", (java.util.function.Supplier<byte[]>) () -> {
                    byte[] tok = new byte[] { 0x04, 0x01 };
                    byte[] buf = new byte[2 + 2 + der.length + 4];
                    int p = 0;

        when(this.mechContext.getFlags()).thenReturn(0x1234);
        when(this.mechContext.initSecContext(any(byte[].class), eq(0), eq(0))).thenReturn(new byte[] { 0x01, 0x02 });

        // Act: len==0 triggers initial token construction
        byte[] out = ctx.initSecContext(null, 0, 0);

        // Assert: returns a SPNEGO token (opaque here but non-null/non-empty)
        assertNotNull(out);
        assertTrue(out.length > 0);

        for (int i = 0; i < threadCount; i++) {
            final int index = i;
            threads[i] = new Thread(() -> {
                try {
                    // Call processRequest which triggers initialization
                    client.doGet("file://nonexistent.txt");
                } catch (Exception e) {
                    // Expected for nonexistent file
                }

   * and {@link java.util.concurrent.CompletableFuture#handleAsync} when used along with {@link
   * #transform}.
   *
   * @param exceptionType the exception type that triggers use of {@code fallback}. The exception
   *     type is matched against the input's exception. "The input's exception" means the cause of