fail("Should throw exception for non-existent property");
        } catch (ConfigPropertyNotFoundException e) {
            // Expected exception
            assertTrue(e.getMessage().contains("non.existent.property"));
        }
    }

    // Test system property without prefix
    public void test_get_systemPropertyWithoutPrefix() {
        // Set system property without FESS_CONFIG_PREFIX

     *            The cause of the exception
     */
    public ClIllegalArgumentException(final String argName, final String messageCode, final Object[] args, final Throwable cause) {
        super(MessageFormatter.getMessage(messageCode, args), cause);
        this.argName = argName;
        this.messageCode = messageCode;
        this.args = args;
    }

    /**
     * Returns the name of the argument.
     *

        try {
            helper.init();
            assertNotNull(helper.duplicateHostList);
        } catch (Exception e) {
            fail("init() should not throw an exception: " + e.getMessage());
        }
    }

    public void test_setDuplicateHostList() {
        DuplicateHostHelper helper = new DuplicateHostHelper();
        List<DuplicateHost> testList = new ArrayList<>();

        try {
            emptyGenerator.isTarget(docMap);
        } catch (IllegalStateException e) {
            // Expected when container is not initialized
            assertTrue(e.getMessage().contains("Not initialized"));
        }
    }

    public void test_getName() {
        // Initialize without container
        emptyGenerator = new EmptyGenerator();

        // Test default name (null)

    ExampleClassUnderTest.foo();
    LogRecord record = handler.getStoredLogRecords().get(0);
    assertEquals(Level.INFO, record.getLevel());
    assertEquals("message", record.getMessage());
    assertSame(EXCEPTION, record.getThrown());
  }

  public void testConcurrentModification() throws Exception {
    // Tests for the absence of a bug where logging while iterating over the

            parser.parse(new InputSource(new StringReader(invalidXml)));
            fail("Should throw GsaConfigException");
        } catch (GsaConfigException e) {
            assertEquals("Failed to parse XML file.", e.getMessage());
        }
    }

    public void test_parseWithMalformedXml() {
        GsaConfigParser parser = new GsaConfigParser();
        String malformedXml = "<?xml version=\"1.0\"?><eef><unclosed>";

            assertTrue("Exception should be DictionaryException", e instanceof DictionaryException);
            assertTrue("Message should mention userDict file",
                    e.getMessage().contains("userDict") || e.getMessage().contains("Failed to write"));
        } finally {
            // Ensure proper cleanup
            if (updater != null) {
                try {
                    updater.close();

            queryCommand.execute(context, invalidQuery, 1.0f);
            fail();
        } catch (InvalidQueryException e) {
            // expected
            assertTrue(e.getMessage().contains("Unknown q:"));
        }
    }

    public void test_convertTermRangeQuery_searchField_inclusive() throws Exception {
        QueryContext context = new QueryContext("test", false);

        if (closeable == null) {
            return;
        }
        try {
            closeable.close();
        } catch (final IOException e) {
            logger.log(format("ECL0017", e.getMessage()), e);
        }
    }

    /**
     * Closes a {@link Closeable} quietly, suppressing any {@link IOException}.
     *
     * @param closeable the closeable object
     */

            return "Deleted " + count + " thumbnail files.";
        } catch (final Exception e) {
            logger.error("Failed to purge thumbnails.", e);
            return e.getMessage();
        }
    }

    /**
     * Gets the expiration time for thumbnails.
     *
     * @return the expiration time in milliseconds
     */
    public long getExpiry() {
        return expiry;