// permitted not to throw because it would be a no-op
    }
    expectUnchanged();
  }

  @MapFeature.Require(value = SUPPORTS_PUT, absent = ALLOWS_NULL_KEY_QUERIES)
  public void testReplace_absentNullKeyUnsupported() {
    try {
      getMap().replace(null, v3());
    } catch (NullPointerException tolerated) {
      // permitted not to throw because it would be a no-op
    }
    expectUnchanged();

   */
  static void assertBasicUrlEscaperExceptPercent(UnicodeEscaper e) {
    // URL escapers should throw null pointer exceptions for null input
    try {
      e.escape((String) null);
      fail("Escaping null string should throw exception");
    } catch (NullPointerException x) {
      // pass
    }

    // All URL escapers should leave 0-9, A-Z, a-z unescaped

    public void test_throwAndCatch() {
        // Test throwing and catching the exception
        String expectedMessage = "Job execution failed";
        boolean exceptionCaught = false;

        try {
            throw new ScheduledJobException(expectedMessage);
        } catch (ScheduledJobException e) {
            exceptionCaught = true;
            assertEquals(expectedMessage, e.getMessage());
        }

    }

    public void test_throwAndCatchException() {
        // Test throwing and catching the exception
        String expectedMessage = "Storage failure";

        try {
            throw new StorageException(expectedMessage);
        } catch (StorageException e) {
            assertEquals(expectedMessage, e.getMessage());
            assertNull(e.getCause());
        }
    }

    FutureCallback<String> callback =
        new FutureCallback<String>() {
          @Override
          public void onSuccess(String result) {
            successCalls[0]++;
            throw exception;
          }

          @Override
          public void onFailure(Throwable t) {
            failureCalls[0]++;
          }
        };
    addCallback(future, callback, directExecutor());

    }

    /**
     * Tests the {@link PacUnicodeString#check(String)} method with a non-empty string when the pointer is zero.
     * This is an invalid state and should throw an exception.
     */
    @Test
    void testCheck_withNonNullStringAndZeroPointer_throwsException() {
        // A zero pointer should mean the string is null

    this.validator = validator;
    this.errorMessage = errorMessage;
  }

  // Override hashCode() to access delegate directly (so that it doesn't trigger the validate() call
  // via delegate()); it seems inappropriate to throw ISE on this method.
  @Override
  public int hashCode() {
    return delegate.hashCode();
  }

  private void validate() {

  public final T next() {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    state = State.NOT_READY;
    // Safe because hasNext() ensures that tryToComputeNext() has put a T into `next`.
    T result = uncheckedCastNullableTToT(next);
    next = null;
    return result;
  }

  @Override
  public final void remove() {
    throw new UnsupportedOperationException();
  }

            server = "\\\\";
        }
        final MsrpcLsarOpenPolicy2 rpc = new MsrpcLsarOpenPolicy2(server, access, this);
        handle.sendrecv(rpc);
        if (rpc.retval != 0) {
            throw new SmbException(rpc.retval, false);
        }
    }

    /**
     * Closes the LSA policy handle.
     *
     * @throws IOException if an I/O error occurs
     */
    public void close() throws IOException {

     */
    public void test_throwAndCatch() {
        try {
            throw new CrawlerSystemException("Test throw");
        } catch (CrawlerSystemException e) {
            assertEquals("Test throw", e.getMessage());
            assertNull(e.getCause());
        }

        try {
            throw new CrawlerSystemException("Test with cause", new IllegalArgumentException("Cause"));