assertTrue(exception.getMessage().contains(cause.getClass().getName()));
        assertTrue(exception.getMessage().contains("Cause exception"));
    }

    @Test
    public void test_constructor_withNullMessage() {
        // Test constructor with null message
        FessSystemException exception = new FessSystemException((String) null);

        assertNull(exception.getMessage());
        assertNull(exception.getCause());

        assertEquals(messageCode, exception3Params.getMessageCode());
        assertEquals(message, exception3Params.getMessage());
        assertEquals(cause, exception3Params.getCause());

        assertEquals(messageCode, exception2Params.getMessageCode());
        assertEquals(message, exception2Params.getMessage());
        assertNull(exception2Params.getCause());
    }

        assertEquals(message, exception.getMessage());
        assertEquals(cause, exception.getCause());
    }

    @Test
    public void test_constructor_withNullMessage() {
        // Test constructor with null message
        SearchEngineClientException exception = new SearchEngineClientException(null);

        assertNotNull(exception);
        assertNull(exception.getMessage());
        assertNull(exception.getCause());

        assertNotNull(exception);
        assertTrue(exception.getMessage().startsWith("Not Found: http://example.com/"));
        assertTrue(exception.getMessage().contains("Parent: http://example.com/"));
        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withUnicodeCharacters() {

        // Execute
        final SsoMessageException exception = new SsoMessageException(messageCode, message, cause);

        // Verify
        assertNotNull(exception);
        assertEquals(message, exception.getMessage());
        assertEquals(cause, exception.getCause());
        assertEquals(messageCode, exception.getMessageCode());
    }

    @Test
    public void test_constructor_withMessageCodeAndMessage() {
        // Setup

        assertEquals(message, exception.getMessage());
    }

    @Test
    public void test_message_nullString() {
        // Test with null message string
        int statusCode = 500;
        String message = null;

        WebApiException exception = new WebApiException(statusCode, message);

        assertEquals(statusCode, exception.getStatusCode());
        assertNull(exception.getMessage());
    }

    @Test

        assertEquals("Error message", exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test
    public void test_constructorWithMessageAndCause() {
        final RuntimeException cause = new RuntimeException("Root cause");
        final LlmException exception = new LlmException("Error occurred", cause);
        assertEquals("Error occurred", exception.getMessage());
        assertSame(cause, exception.getCause());

        }
    }

    @Test
    public void test_setObject_withNullName() {
        // Test setObject with null name
        try {
            WebApiUtil.setObject(null, "testValue");
        } catch (Exception e) {
            fail("setObject should handle null name gracefully: " + e.getMessage());
        }
    }

    @Test

        assertNotNull(exception);
        assertEquals(message, exception.getMessage());
        assertNull(exception.getCause());

        // Test with empty string
        TransportException emptyException = new TransportException("");
        assertEquals("", emptyException.getMessage());

        // Test with null message

        final String s = MessageFormatter.getMessage("EMSG0000");
        System.out.println(s);
        assertThat(s, is("[EMSG0000]test"));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testGetMessageWithArgs() throws Exception {
        final String s = MessageFormatter.getMessage("EMSG0001", "hoge");
        System.out.println(s);