public String load(String key) throws InterruptedException {
            int behavior = random.nextInt(4);
            if (behavior == 0) { // throw an exception
              exceptionCount.incrementAndGet();
              throw new RuntimeException("fake exception for test");
            } else if (behavior == 1) { // return null
              computeNullCount.incrementAndGet();
              return null;

          public String load(String key) throws InterruptedException {
            int behavior = random.nextInt(4);
            if (behavior == 0) { // throw an exception
              exceptionCount.incrementAndGet();
              throw new RuntimeException("fake exception for test");
            } else if (behavior == 1) { // return null
              computeNullCount.incrementAndGet();
              return null;

        try {
            userService.changePassword(username, form.newPassword);
            saveInfo(messages -> messages.addSuccessChangedPassword(GLOBAL));
        } catch (final Exception e) {
            logger.warn("Failed to change password for {}", username, e);
            throwValidationError(messages -> messages.addErrorsFailedToChangePassword(GLOBAL), toIndexPage);
        }

     * @return The result from the supplier (either fresh or cached)
     * @throws RuntimeException Any exception thrown by the supplier will be cached and re-thrown on subsequent calls
     */
    <REQ extends Request<?>, REP extends Result<REQ>> REP request(REQ req, Function<REQ, REP> supplier);

    /**
     * Executes and optionally caches a batch of requests using the provided supplier function.

   * function that also supports reverse conversion.
   *
   * <p>If you are okay with {@code null} being returned for an unrecognized key (instead of an
   * exception being thrown), you can use the method reference {@code map::get} instead. Note that
   * it is not serializable unless you explicitly make it {@link Serializable}, typically by writing

                fos = null; // Successfully wrapped, no need to close explicitly
            } catch (final Exception e) {
                if (fos != null) {
                    try {
                        fos.close();
                    } catch (final IOException ioe) {
                        // Ignore close exception
                    }
                }
                if (newFile != null) {

    private RelatedQueryHelper relatedQueryHelper;
    private MockRelatedQueryBhv mockBhv;
    private VirtualHostHelper virtualHostHelper;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);

        // Setup system properties for DI container
        File file = File.createTempFile("test", ".properties");
        file.deleteOnExit();

        assertEquals(32, key2.length, "Key 2 should have correct length");
        assertFalse(Arrays.equals(key1, key2), "Random keys should be different");
    }

    @Test
    public void testDeriveKey() throws Exception {
        byte[] baseKey = new byte[16];
        new SecureRandom().nextBytes(baseKey);

        byte[] derived1 = keyManager.deriveKey(baseKey, "label1", null, 32);

    }

    @Test
    public void test_sort_withNullArrays() {
        // Test sort with null arrays doesn't throw exception
        CharMappingItem item = new CharMappingItem(1L, new String[] { "a" }, "output");
        item.setNewInputs(null);

        // Should not throw exception
        item.sort();

        // Original inputs should still be sorted
        assertEquals("a", item.getInputs()[0]);
    }

                    }
                    if (list.size() > bufferSize) {
                        list.remove(0);
                    }
                }
            } catch (final Exception e) {
                running = false;
                if (logger.isDebugEnabled()) {
                    logger.debug("Failed to process an input stream.", e);
                }
            }
        }
    }